UCS1001 USB Port Power Controller with Charger Emulation PRODUCT FEATURES Datasheet General Description Features The UCS1001 provides a USB port power switch for  Port power switch with two current limit behaviors precise control of up to 2.5 amperes continuous current — 2.9V to 5.5V source voltage range with over-current limit (OCL), dynamic thermal — Up to 2.5A current with 55m On Resistance — Over-current trip or constant current limiting management, latch or auto-recovery (low test current) — Soft turn-on circuitry fault handling, selectable active low or high enable, — Selectable current limit under- and over-voltage lockout, back-drive protection, — Dynamic thermal management and back-voltage protection. — Under- and over-voltage lockout Split supply support for VS and VDD is an option for low — Back-drive, back-voltage protection power in system standby states. This gives battery — Latch or auto-recovery (low test current) fault handling — Selectable active high or low power switch enable operated applications, like notebook PCs, the ability to — BC1.2 VBUS discharge port renegotiation function detect attachments from a sleep or off state. After the Attach Detection is flagged, the system can decide to  Selectable / automatic cycling of USB data line charger emulation profiles wake up and/or provide charging. — USB-IF BC1.2 charging downstream port (CDP) & In addition to power switching and current limiting dedicated charging port (DCP) modes, YD/T-1591, and modes, the UCS1001 will automatically charge a wide most Apple and RIM protocols standard variety of portable devices, including USB-IF BC1.2, — USB 2.0 compliant high-speed data switch (in Pass- YD/T-1591 (2009), most Apple® and RIM®, and many through and CDP modes) others. Nine preloaded charger emulation profiles — Nine preloaded charger emulation profiles for maximum maximize compatibility coverage of peripheral devices. compatibility coverage of peripheral devices  Charging Active (UCS1001-1) or Attach Detection The UCS1001 is available in a 20-pin QFN 4mm x (UCS1001-2) open-drain output 4mm package.  Fault Alert open-drain output Applications  Ultra low power Sleep state  Notebook and Netbook Computers  Optional split supply support for VBUS and VDD for  Tablets and E-book readers low power in system standby states  Desktops and Monitors  Wake on Attach USB (UCS1001-2)  Docking Stations and Printers  Wide operating temperature range: -40°C to +85°C  AC-DC wall adapters  IEC61000-4-2 8 / 15kV ESD immunity  UL recognized and EN/IEC 60950-1 (CB) certified SMSC UCS1001 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Block Diagram DPIN USB 2.0 HS Data Switch DPOUT & Charger Emulator DMIN DMOUT VDD VDD Attach Detector VS VBUS UVLO, GND Power OVLO Switch ILIM ALERT# CHRG# (UCS1001-1 only) A_DET# (UCS1001-2 only) VDD PWR_EN Charger Control, Temp Interface, SEL Logic Measurement, EM_EN OCL M1 M2 S0 LATCH Revision 1.2 (05-21-12) 2 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet ORDERING INFORMATION: ORDERING NUMBER PACKAGE FEATURES UCS1001-1-BP-TR 20 pin QFN 4mm x 4mm USB Port Power Controller with Charger (Lead Free RoHS compliant) Emulation and charging active output indicator UCS1001-2-BP-TR 20 pin QFN 4mm x 4mm USB Port Power Controller with Charger (Lead Free RoHS compliant) Emulation and portable device attachment detected output indicator REEL SIZE IS 4,000 PIECES This product meets the halogen maximum concentration values per IEC61249-2-21 For RoHS compliance and environmental information, please visit www.smsc.com/rohs Please contact your SMSC sales representative for additional documentation related to this product such as application notes, anomaly sheets, and design guidelines. Copyright © 2012 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com. SMSC is a registered trademark of Standard Microsystems Corporation (“SMSC”). Product names and company names are the trademarks of their respective holders. SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND ALL WARRANTIES ARISING FROM ANY COURSE OF DEALING OR USAGE OF TRADE. IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT, INCIDENTAL, INDIRECT, SPECIAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES; OR FOR LOST DATA, PROFITS, SAVINGS OR REVENUES OF ANY KIND; REGARDLESS OF THE FORM OF ACTION, WHETHER BASED ON CONTRACT; TORT; NEGLIGENCE OF SMSC OR OTHERS; STRICT LIABILITY; BREACH OF WARRANTY; OR OTHERWISE; WHETHER OR NOT ANY REMEDY OF BUYER IS HELD TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SMSC UCS1001 3 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table of Contents Chapter1 Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Chapter2 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Chapter3 Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.1 ESD & Transient Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.1.1 Human Body Model (HBM) Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.1.2 Charged Device Model (CDM) Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.1.3 IEC61000-4-2 Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Chapter4 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.1 UCS1001 Power States. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.1.1 Off State Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4.1.2 Sleep State Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4.1.3 Detect State Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4.1.4 Active State Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 4.1.5 Error State Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4.2 Supply Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4.2.1 VDD Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4.2.2 VS Source Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4.2.3 Back-voltage Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.2.4 Back-drive Current Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.2.5 Under-voltage Lockout on VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.2.6 Over-voltage Detection and Lockout on VS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.3 Discrete Input Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.3.1 ILIM Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.3.2 SEL Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.3.3 M1, M2, and EM_EN Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.3.4 PWR_EN Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.3.5 Latch Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.3.6 S0 Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.4 Discrete Output Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.4.1 ALERT#, CHRG#, and A_DET# Output Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.4.2 Interrupt Blanking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Chapter5 USB High-speed Data Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 5.1 USB High-speed Data Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 5.1.1 USB-IF High-speed Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Chapter6 USB Port Power Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6.1 USB Port Power Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6.2 Current Limiting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6.2.1 Current Limit Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6.2.2 Short Circuit Output Current Limiting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6.2.3 Soft Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 6.2.4 Current Limiting Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 6.3 Thermal Management and Voltage Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 6.3.1 Thermal Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Revision 1.2 (05-21-12) 4 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 6.4 VBUS Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 6.5 Fault Handling Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 6.5.1 Auto-recovery Fault Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 6.5.2 Latched Fault Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Chapter7 Detect State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 7.1 Device Attach / Removal Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 7.2 VBUS Bypass Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 7.3 Attach Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 7.4 Removal Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Chapter8 Active State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 8.1 Active State Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 8.2 Active Mode Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 8.3 BC1.2 Detection Renegotiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 8.4 Data Pass-through (No Charger Emulation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 8.5 BC1.2 SDP (No Charger Emulation). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 8.6 BC1.2 CDP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 8.6.1 BC1.2 CDP Charger Emulation Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 8.7 BC1.2 DCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 8.7.1 BC1.2 DCP Charger Emulation Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 8.8 Dedicated Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 8.8.1 Emulation Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 8.8.2 Emulation Cycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 8.8.3 DCE Cycle Retry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 8.9 Current Limit Mode Associations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 8.10 Preloaded Charger Emulation Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 8.10.1 BC1.2 DCP Charger Emulation Profile Within DCE Cycle . . . . . . . . . . . . . . . . . . . . . . . . . 46 8.10.2 Legacy 2 Charger Emulation Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 8.10.3 Legacy 1, 3, 4, and 6 Charger Emulation Profiles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 8.10.4 Legacy 5 Charger Emulation Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 8.10.5 Legacy 7 Charger Emulation Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Chapter9 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 9.1 Package Markings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Chapter10 Typical Operating Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Chapter11 Document Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 SMSC UCS1001 5 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet List of Figures Figure2.1 UCS1001-1 Pin Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure2.2 UCS1001-2 Pin Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure3.1 USB Rise Time / Fall Time Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure3.2 Description of DC Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Figure4.1 UCS1001-1 System Configuration (No Charger Emulation). . . . . . . . . . . . . . . . . . . . . . . . 23 Figure4.2 UCS1001-2 System Configuration (No Charger Emulation). . . . . . . . . . . . . . . . . . . . . . . . 24 Figure4.3 UCS1001-1 System Configuration (No USB Host, with Charger Emulation) . . . . . . . . . . . 25 Figure4.4 UCS1001-2 System Configuration (No USB Host, with Charger Emulation) . . . . . . . . . . . 26 Figure4.5 Wake Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Figure6.1 Trip Current Limiting Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Figure6.2 Constant Current Limiting (Variable Slope) Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Figure9.1 UCS1001 Package View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Figure9.2 UCS1001 Package Dimensions and Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Figure9.3 UCS1001 PCB Layout Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Figure9.4 Recommended Thermal Landing Solder Paste Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Figure9.5 UCS1001 Package Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Figure10.1 USB-IF High-speed Eye Diagram (without data switch) . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Figure10.2 USB-IF High-speed Eye Diagram (with data switch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Figure10.3 Short Applied After Power Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Figure10.4 Power Up Into A Short. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Figure10.5 Internal Power Switch Short Response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Figure10.6 VBUS Discharge Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Figure10.7 Data Switch Off Isolation vs. Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Figure10.8 Data Switch Bandwidth vs. Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Figure10.9 Data Switch On Resistance vs. Temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Figure10.10 Power Switch On Resistance vs. Temp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Figure10.11 R Resistance vs.Temp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 DCP_RES Figure10.12 Power Switch On / Off Time vs. Temp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Figure10.13 VS Over-Voltage Threshold vs. Temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Figure10.14 VS Under Voltage Threshold vs. Temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Figure10.15 Detect State VBUS vs. IBUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Figure10.16 Trip Current Limit Operation vs. Temp.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Figure10.17 IBUS Measurement Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Figure10.18 Active State Current vs. Temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Figure10.19 Detect State Current vs. Temp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Figure10.20 Sleep State Current vs. Temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Revision 1.2 (05-21-12) 6 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet List of Tables Table1.1 Terms and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table2.1 UCS1001 Pin Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table2.2 Pin Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table3.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Table3.2 Power Dissipation Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Table3.3 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Table3.4 ESD Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Table4.1 Power States Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Table6.1 UCS1001 ILIM Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Table8.1 Active Mode Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Table8.2 Current Limit Mode Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Table11.1 Customer Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 SMSC UCS1001 7 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Chapter 1 Terms and Abbreviations APPLICATION NOTE: The M1, M2, PWR_EN, and EM_EN pins are referenced in text as the <pin name> control. Table1.1 Terms and Abbreviations TERM / ABBREVIATION DESCRIPTION Active mode Active power state operation mode: Data Pass-through, BC1.2 SDP, BC1.2 CDP, BC1.2 DCP, or Dedicated Charger Emulation Cycle. attachment The physical insertion of a portable device into a USB port that UCS1001 is controlling. CC Constant current CDM Charged Device Model. JEDEC model for characterizing susceptibility of a device to damage from ESD. CDP or USB-IF Charging downstream port. The combination of the UCS1001 CDP handshake and an BC1.2 CDP active standard USB host comprises a CDP. This enables a BC1.2 compliant portable device to simultaneously draw current up to 1.5A while data communication is active. The USB high-speed data switch is closed in this mode. charge enable When a charger emulation profile has been accepted by a portable device and charging commences. charger emulation Representation of a charger comprised of DPOUT, DMOUT, and VBUS signalling which profile make up a defined set of signatures or handshaking protocols. connection USB-IF term which refers to establishing active USB communications between a USB host and a USB device. current limiting mode Determines the action that is performed when the IBUS current reaches the ILIM threshold. Trip opens the port power switch. Constant current (variable slope) allows VBUS to be dropped by the portable device. DCE Dedicated charger emulation. Charger emulation in which the UCS1001 can deliver power only. No active USB data communication is possible when charging in this mode. DCP or USB-IF Dedicated Charging Port. This functions as a dedicated charger for a BC1.2 portable BC1.2 DCP device. This allows the portable device to draw currents up to 1.5A with constant current limiting (and beyond 1.5A with trip current limiting). No USB communications are possible. DC Dedicated charger. A charger which inherently does not have USB communications, such as an A/C wall adapter. disconnection USB-IF term which refers to the loss of active USB communications between a USB host and a USB device. dynamic thermal The UCS1001 automatically adjusts port power switch limits and modes to lower internal management power dissipation when the thermal regulation temperature value is approached. enumeration A USB-specific term that indicates that a host is detecting and identifying USB devices. handshake Application of a charger emulation profile that requires a response. Two-way communication between the UCS1001 and the portable device. HBM Human Body Model. HSW High-speed switch. Revision 1.2 (05-21-12) 8 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table1.1 Terms and Abbreviations (continued) TERM / ABBREVIATION DESCRIPTION I Current limiter mode boundary. BUS_R2MIN ILIM The IBUS current threshold used in current limiting. In trip mode, when ILIM is reached, the port power switch is opened. In constant current mode, when the current exceeds ILIM, operation continues at a reduced voltage and increased current; if VBUS voltage drops below V , the port power switch is opened. BUS_MIN Legacy USB devices that require non-BC1.2 signatures be applied on the DPOUT and DMOUT pins to enable charging. OCL Over-current limit. portable device USB device attached to the USB port. power thief A USB device that does not follow the handshaking conventions of a BC1.2 device or Legacy devices and draws current immediately upon receiving power (i.e., a USB book light, portable fan, etc). removal The physical removal of a portable device from a USB port that the UCS1001 is controlling. SDP or USB-IF SDP Standard downstream port. The combination of the UCS1001 high-speed switch being closed with an upstream USB host present comprises a BC1.2 SDP. This enables a BC1.2 compliant portable device to simultaneously draw current up to 0.5A while data communication is active. signature Application of a charger emulation profile without waiting for a response. One-way communication from the UCS1001 to the portable device. SMSC UCS1001 9 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Chapter 2 Pin Description D _EN RG# OUT OUT N M H P M G E C D D 0 9 8 7 6 2 1 1 1 1 M1 1 15 DMIN M2 2 14 DPIN UCS1001-1 VBUS1 3 13 ALERT# 20-QFN 4mm x 4mm VBUS2 4 12 S0 ILIM 5 11 LATCH 6 7 8 9 10 GND FLAG L 1 2 D N E S S D E S V V V _ R W P Figure2.1 UCS1001-1 Pin Diagram Revision 1.2 (05-21-12) 10 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet ND M_EN _DET# POUT MOUT G E A D D 0 9 8 7 6 2 1 1 1 1 M1 1 15 DMIN M2 2 14 DPIN UCS1001-2 VBUS1 3 13 ALERT# 20-QFN 4mm x 4mm VBUS2 4 12 S0 ILIM 5 11 LATCH 6 7 8 9 10 GND FLAG L 1 2 D N E S S D E S V V V _ R W P Figure2.2 UCS1001-2 Pin Diagram The pin types are described in Table2.2. All pins are 5V tolerant. Table2.1 UCS1001 Pin Description PIN IF PIN NOT USED NUMBER PIN NAME PIN FUNCTION PIN TYPE CONNECTION 1 M1 Active mode selector input #1 DI Connect to ground or VDD (see Note2.2) 2 M2 Active mode selector input #2 DI Connect to ground or VDD (see Note2.2) 3 VBUS1 Voltage output from Power Switch. Hi-Power, Leave open These pins must be tied together. AIO 4 VBUS2 Note2.1 5 ILIM Selects the maximum current limit at AIO n/a power-up (see Table6.1, "UCS1001 ILIM Selection") 6 SEL Selects polarity of PWR_EN control DI n/a (see Section 4.3.2, "SEL Input") SMSC UCS1001 11 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table2.1 UCS1001 Pin Description (continued) PIN IF PIN NOT USED NUMBER PIN NAME PIN FUNCTION PIN TYPE CONNECTION 7 VS1 Voltage input to Power Switch. Hi-Power, Connect to ground These pins must be tied together. AIO 8 VS2 9 VDD Main power supply input for chip Power n/a functionality 10 PWR_EN Port power switch enable input. Polarity DI Connect to ground determined by SEL pin. or VDD (see Note2.2) 11 LATCH Latch / Auto-recovery fault handling DI n/a mechanism selection input (see Section 6.5, "Fault Handling Mechanism") 12 S0 Enables Attach / Removal Detection DI n/a feature (see Section 4.3.6, "S0 Input") 13 ALERT# Active low error event output flag OD Connect to ground (requires pull-up resistor) 14 DPIN USB data input (plus) AIO Connect to ground or ground through a resistor 15 DMIN USB data input (minus) AIO Connect to ground or ground through a resistor 16 DMOUT USB data output (minus) AIO Connect to ground 17 DPOUT USB data output (plus) AIO Connect to ground 18 CHRG# Active low “Charging Active” output flag OD Connect to ground (UCS1001-1) (requires pull-up resistor) 18 A_DET# Active low Attach Detection output flag OD Connect to ground (UCS1001-2) (requires pull-up resistor) 19 EM_EN Active mode selector input DI Connect to ground or VDD (see Note2.2) 20 GND Ground Power n/a Bottom Pad GND FLAG Thermal connection to ground plane Thermal Pad n/a Note2.1 Total leakage current from pins 3 and 4 (VBUS) to ground must be less than 100µA for proper attach / removal detection operation. Note2.2 To ensure operation, the PWR_EN pin must be enabled, as determined by the SEL pin decode, when it is not driven by an external device. Furthermore, one of the M1, M2, or EM_EN pins must be connected to VDD if all three are not driven from an external device. If the PWR_EN is disabled or all of the M1, M2, and EM_EN are connected to ground, the UCS1001 will remain in the Sleep or Detect state indefinitely. Revision 1.2 (05-21-12) 12 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table2.2 Pin Types PIN TYPE DESCRIPTION Power This pin is used to supply power or ground to the device. Hi-Power This pin is a high current pin. AIO Analog Input / Output - this pin is used as an I/O for analog signals. DI Digital Input - this pin is used as a digital input. OD Open-drain Digital Output - used as a digital output. It is open-drain and requires a pull-up resistor. SMSC UCS1001 13 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Chapter 3 Electrical Specifications Table3.1 Absolute Maximum Ratings Voltage on VDD, VS, and VBUS pins -0.3 to 6 V Pullup voltage (V ) -0.3 to VDD + 0.3 PULLUP Data switch current (I _ ), switch on ±50 mA HSW ON Port power switch current Internally limited Data switch pin voltage to ground (DPOUT, DPIN, DMOUT, -0.3 to VDD + 0.3 V DMIN); (VDD powered or unpowered) Differential voltage across open data switch (DPOUT - DPIN, VDD V DMOUT - DMIN, DPIN - DPOUT, DMIN - DMOUT) Voltage on any other pin to ground -0.3 to VDD + 0.3 V Current on any other pin ±10 mA Package power dissipation See Table3.2 Operating ambient temperature range -40 to 125 °C Storage temperature range -55 to 150 °C Note: Stresses above those listed could cause permanent damage to the UCS1001. This is a stress rating only and functional operation of the UCS1001 at any other condition above those indicated in the operation sections of this specification is not implied. Table3.2 Power Dissipation Summary TA < TA = TA = DERATING 25°C 70°C 85°C FACTOR POWER POWER POWER BOARD PKG   ABOVE 25°C RATING RATING RATING JC JA High K 20-pin QFN 6°C / 41°C / 24.4mW / °C 2193mW 1095mW 729mW (see Note3.1) 4mm x 4mm W W Low K 20-pin QFN 6°C / 60°C / 16.67mW / 1498mW 748mW 498mW (see Note3.1) 4mm x 4mm W W °C Note3.1 A High K board uses a thermal via design with the thermal landing soldered to the PCB ground plane with 0.3mm (12mil) diameter vias in a 3x3 matrix (9 total) at 0.5mm (20mil) pitch. The board is multi-layer with 1-ounce internal power and ground planes and 2-ounce copper traces on top and bottom. A Low K board is a two layer board without thermal via design with 2-ounce copper traces on the top and bottom. Revision 1.2 (05-21-12) 14 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table3.3 Electrical Specifications VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V, V = 3V to 5.5V, T = -40°C to 85°C PULLUP A all Typical values at VDD = VS = 5V, T = 27°C unless otherwise noted. A CHARACTERISTIC SYMBOL MIN TYP MAX UNIT CONDITIONS Power and Interrupts - DC Supply Voltage VDD 4.5 5 5.5 V See Note3.2 Source Voltage VS 2.9 5 5.5 V See Note3.2 Supply Current in Active I 650 750 µA Average current ACTIVE (I + I ) IBUS = 0mA DD_ACTIVE VS_ACT Supply Current in Sleep I 5 8 µA Average current SLEEP (I + I ) V < VDD DD_SLEEP VS_SLEEP PULLUP Supply Current in Detect I 185 220 µA Average current DETECT (I + No portable device attached. DD_DETECT I ) VS_DETECT Power-on Reset VS Low Threshold V 2.5 2.7 V VS voltage increasing S_UVLO VS Low Hysteresis V 100 mV VS voltage decreasing S_UVLO_HYST VDD Low Threshold V 4 4.4 V VDD voltage increasing DD_TH VDD Low Hysteresis V 500 mV VDD voltage decreasing DD_TH_HYST I/O Pins - EM_EN, M1, M2, PWR_EN, S0, LATCH, ALERT#, CHRG# (UCS1001-1), A_DET# (UCS1001-2) - DC Parameters Output Low Voltage V 0.4 V I = 8mA OL SINK_IO ALERT#, CHRG#, A_DET# Input High Voltage V 2.0 V PWR_EN, EM_EN, M1, M2, IH LATCH, S0 Input Low Voltage V 0.8 V PWR_EN, EM_EN, M1, M2, IL EM_EN, LATCH, S0 Leakage Current I ±5 µA Powered or unpowered LEAK V <= VDD PULLUP T < 85°C A Interrupt Pins - AC Parameters ALERT#, A_DET# t 25 ms BLANK (UCS1001-2) Pin Blanking Time ALERT# Pin Interrupt t 5 ms MASK Masking Time SMSC UCS1001 15 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table3.3 Electrical Specifications (continued) VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V, V = 3V to 5.5V, T = -40°C to 85°C PULLUP A all Typical values at VDD = VS = 5V, T = 27°C unless otherwise noted. A CHARACTERISTIC SYMBOL MIN TYP MAX UNIT CONDITIONS High-speed Data Switch High-speed Data Switch - DC Parameters Switch Leakage Current I ±0.5 µA Switch open - DPINto DPOUT, HSW_OFF DMINto DMOUT, or all four pins to ground. VDD < VS. Charger Resistance R 2 M DPOUTor DMOUT to VBUS or CHG ground, see Figure3.2 BC1.2 DCP charger emulation active On Resistance R 2  Switch closed, VDD = 5V ON_HSW test current = 8mA, test voltage = 0.4V, see Figure3.2 On Resistance R 5  Switch closed, VDD = 5V, ON_HSW_1 test current = 8mA, test voltage = 3.0V, see Figure3.2 Delta On Resistance R ±0.3  Switch closed, VDD = 5V ON_HSW I = 8mA, V = 0 to 1.5V, TST TST see Figure3.2 High-speed Data Switch - AC Parameters DP, DM Capacitance to C 4 pF Switch closed HSW_ON Ground VDD = 5V DP, DM Capacitance to C 2 pF Switch open HSW_OFF Ground VDD= 5V Turn Off Time t 400 µs Time from state control HSW_OFF (EM_EN, M1, M2) switch on to switch off, R = 50, TERM C = 5pF LOAD Turn On Time t 400 µs Time from state control HSW_ON (EM_EN, M1, M2) switch off to switch on, R = 50, TERM C = 5pF LOAD Propagation Delay t 0.25 ns R = 50, C = 5pF PD TERM LOAD Propagation Delay Skew t 25 ps R = 50, C = 5pF PD TERM LOAD Rise/Fall Time t 10 ns R = 50, C = 5pF F/R TERM LOAD DP - DM Crosstalk X -40 dB R = 50, C = 5pF TALK TERM LOAD Off Isolation O -30 dB R = 50, C = 5pF IRR TERM LOAD f = 240MHz Revision 1.2 (05-21-12) 16 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table3.3 Electrical Specifications (continued) VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V, V = 3V to 5.5V, T = -40°C to 85°C PULLUP A all Typical values at VDD = VS = 5V, T = 27°C unless otherwise noted. A CHARACTERISTIC SYMBOL MIN TYP MAX UNIT CONDITIONS -3dB Bandwidth BW 1100 MHz R = 50, C = 1.5pF TERM LOAD V = V = 350mV DPOUT DMOUT DC Total Jitter t 200 ps R = 50, C = 5pF, J TERM LOAD rise time = fall time = 500ps at 480Mbps (PRBS = 215 - 1) Skew of Opposite t 20 ps R = 50, C = 5pF SK(P) TERM LOAD Transitions of the Same Output Port Power Switch Port Power Switch - DC Parameter Over-voltage Lockout V 6 V S_OV On Resistance R 55 65 m 4.75V < VS < 5.25V ON_PSW VS Leakage Current I 2.2 5 µA Sleep state LEAK_VS into VS pin Back-voltage Protection V 150 mV VBUS > VS BV_TH Threshold VS > V S_UVLO Back-drive Current I 0 3 µA VDD < V , BD_1 DD_TH Any powered power pin to any unpowered power pin. Current out of unpowered pin. I 0 2 µA VDD > V , BD_2 DD_TH Any powered power pin to any unpowered power pin, except for VDD to VBUS in Detect power state and VS to VBUS in Active power state. Current out of unpowered pin. SMSC UCS1001 17 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table3.3 Electrical Specifications (continued) VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V, V = 3V to 5.5V, T = -40°C to 85°C PULLUP A all Typical values at VDD = VS = 5V, T = 27°C unless otherwise noted. A CHARACTERISTIC SYMBOL MIN TYP MAX UNIT CONDITIONS Selectable Current Limits I 450 467 500 mA ILIM Resistor = 47k LIM1 (500mA setting) I 810 839 900 mA ILIM Resistor = 56k LIM2 (900mA setting) I 900 932 1000 mA ILIM Resistor = 68k LIM3 (1000mA setting) I 1080 1112 1200 mA ILIM Resistor = 82k LIM4 (1200mA setting) I 1350 1385 1500 mA ILIM Resistor = 100k LIM5 (1500mA setting) I 1620 1702 1800 mA ILIM Resistor = 120k LIM6 (1800mA setting) I 1800 1892 2000 mA ILIM Resistor = 150k LIM7 (2000mA setting) I 2250 2355 2500 mA ILIM Resistor = VDD LIM8 (2500mA setting) Thermal Regulation Limit T 110 °C Die Temperature at which REG current limit will be reduced Thermal Regulation T 10 °C Hysteresis for t REG_HYST REG Hysteresis functionality. Temperature must drop by this value before ILIM value restored to normal operation Thermal Shutdown T 135 °C Die Temperature at which port TSD Threshold power switch will turn off Thermal Shutdown T 35 °C After shutdown due to T TSD_HYST TSD Hysteresis being reached, die temperature drop required before port power switch can be turned on again Auto-recovery Test I 190 mA Portable device attached, TEST Current VBUS = 0V, Die temp < T TSD Auto-recovery Test V 750 mV Portable device attached, TEST Voltage VBUS = 0V before application, Die temp < T TSD Discharge Impedance R 100  DISCHARGE Revision 1.2 (05-21-12) 18 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table3.3 Electrical Specifications (continued) VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V, V = 3V to 5.5V, T = -40°C to 85°C PULLUP A all Typical values at VDD = VS = 5V, T = 27°C unless otherwise noted. A CHARACTERISTIC SYMBOL MIN TYP MAX UNIT CONDITIONS Port Power Switch - AC Parameters Turn On Delay t 0.75 ms PWR_EN active toggle to ON_PSW switch on time, VBUS discharge not active Turn Off Time t 0.75 ms PWR_EN inactive toggle to OFF_PSW_INA switch off time C = 120F BUS Turn Off Time t 1 ms Over-current Error, VBUS Min OFF_PSW_ERR Error, or Discharge Error to switch off C = 120F BUS Turn Off Time t 100 ns TSD or Back-drive Error to OFF_PSW_ERR switch off C = 120F BUS VBUS Output Rise Time t 1.1 ms Measured from 10% to 90% of R_BUS VBUS, C = 220F LOAD ILIM = 1.0A Soft Turn on Rate I /  100 mA / BUS t µs Temperature Update t 200 ms DC_TEMP Time Short Circuit Response t 1.5 µs Time from detection of short to SHORT_LIM Time current limit applied. No C applied BUS Short Circuit Detection t 6 ms Time from detection of short to SHORT Time port power switch disconnect and ALERT# pin assertion. Latched Mode Cycle t 7 ms From PWR_EN edge transition UL Time from inactive to active to begin error recovery Auto-recovery Mode t 25 ms Time delay before error CYCLE Cycle Time condition check Auto-recovery Delay t 20 ms Portable device attached, RST VBUSmust be > V after TEST this time Discharge Time t 200 ms Amount of time discharge DISCHARGE resistor applied SMSC UCS1001 19 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table3.3 Electrical Specifications (continued) VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V, V = 3V to 5.5V, T = -40°C to 85°C PULLUP A all Typical values at VDD = VS = 5V, T = 27°C unless otherwise noted. A CHARACTERISTIC SYMBOL MIN TYP MAX UNIT CONDITIONS Port Power Switch Operation With Trip Mode Current Limiting Region 2 Current Keep- I 0.1 A BUS_R2MIN out Minimum VBUS Allowed V 2.0 V BUS_MIN at Output Port Power Switch Operation With Constant Current Limiting (Variable Slope) Region 2 Current Keep- I 1.5 A BUS_R2MIN out Minimum VBUS Allowed V 2.0 V BUS_MIN at Output VBUS Bypass - DC On Resistance R 50  ON_BYP Leakage Current I 3 µA Switch off LEAK_BYP Current Limit I 2 mA VDD = 5V and VBUS> 4.75V DET_CHG / I BUS_BYP Allowed Charge Time t 800 ms C = 500µF max DET_CHARGE BUS Charger Emulation Profile General Emulation - DC DP-DM Shunt Resistor R 200  Connected between DPOUT DCP_RES Value and DMOUT 0V < DPOUT = DMOUT < 3V Voltage Output SX_RXMAG_ 0.5 V DMOUT VOLT_BC 250µA load Pull-down Current SX_PUPD 50 µA DPOUT or DMOUT = 0.15V _ACC_BC Compliance voltage General Emulation - AC Emulation Reset Time t 50 ms EM_RESET Note3.2 For split supply systems using the Attach Detection feature, VS must not exceed VDD + 150mV. Revision 1.2 (05-21-12) 20 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Figure3.1 USB Rise Time / Fall Time Measurement V BUS R CHG DPIN DPOUT R I V CHG TST TST V BUS R CHG DMIN DMOUT R I V CHG TST TST Figure3.2 Description of DC Terms SMSC UCS1001 21 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 3.1 ESD & Transient Performance APPLICATION NOTE: Depending on the level of ESD protection required by the application, external protection devices may be required. The datasheet ESD levels were reached using external devices and standard USB-A connectors; refer to the EVB schematic and reference design for details. Table3.4 ESD Ratings ESD SPEC RATING OR VALUE EN / IEC61000-4-2 (DPOUT, DMOUT pins) air gap, Level 4 (15kV) Operational Classification B (see Note3.3) EN / IEC61000-4-2 (DPOUT, DMOUTpins) direct contact, Level 4 (8kV) Operational Classification B (see Note3.3) EN / IEC61000-4-2 (VBUS, GND pins) air gap, Level 4 (15kV) Operational Classification A (see Note3.4) EN / IEC61000-4-2 (VBUS, GND pins) direct contact, Level 4 (8kV) Operational Classification A (see Note3.4) Human Body Model (JEDEC JESD22-A114) - All pins 8kV Charged Device Model (JEDEC JESD22-C101) - All pins 500V Note3.3 Operational Classification B indicates that during and immediately after an ESD event, anomalous behavior may occur; however, it is non-damaging and the device is self- recovering. All IEC testing is performed using an SMSC evaluation board. Note3.4 Operational Classification A indicates that during and immediately after an ESD event no anomalous behavior will occur. All IEC testing is performed using an SMSC evaluation board. 3.1.1 Human Body Model (HBM) Performance HBM testing verifies the ability to withstand ESD strikes like those that occur during handling and manufacturing and is done without power applied to the IC. To pass the test, the device must have no change in operation or performance due to the event. 3.1.2 Charged Device Model (CDM) Performance CDM testing verifies the ability to withstand ESD strikes like those that occur during handling and assembly with pick and place style machinery and is done without power applied to the IC. To pass the test, the device must have no change in operation or performance due to the event. 3.1.3 IEC61000-4-2 Performance The IEC61000-4-2 ESD specification is an international standard that addresses system-level immunity to ESD strikes while the end equipment is operational. These tests are performed while the device is powered. Revision 1.2 (05-21-12) 22 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Chapter 4 General Description The UCS1001 provides a single USB port power switch for precise control of up to 2.5 amperes continuous current with over-current limit (OCL), dynamic thermal management, latch or auto-recovery fault handling, selectable active low or high enable, under- and over-voltage lockout, and back-voltage protection. Split supply support for VBUS and VDD is an option for low power in system standby states. In addition to power switching and current limiting, the UCS1001 provides charger emulation profiles to charge a wide variety of portable devices, including USB-IF BC1.2 (CDP or DCP modes), YD/T- 1591 (2009), most Apple and RIM portable devices, and many others. Figure4.1 shows a system configuration in which the UCS1001-1 provides a port power switch, low power Attach Detection, and charging active signaling. Figure4.2 shows a system configuration in which the UCS1001-2 provides a port power switch, low power Attach Detection, and portable device Attach Detection signaling. These configurations are useful for applications that already provide USB BC1.2 and/or legacy data line handshaking on the USB data lines, but still require port power switching. DPIN DPOUT USB Host (DP, DM) DMIN DMOUT 5 V Host VS1 VBUS1 Device VS2 VBUS2 CIN UCS1001-1 CBUS EM_EN 3 V – 5.5 V M1 M2 Enable Latch Detect State Upon Fault PWR_EN SEL 3 V – 5.5 V LATCH VDD S0 ILIM 5 V Disable Detect Auto-recovery State Upon Fault VDD CHRG# GND ALERT# Figure4.1 UCS1001-1 System Configuration (No Charger Emulation) SMSC UCS1001 23 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet . DPIN DPOUT USB Host (DP, DM) DMIN DMOUT 5 V Host VS1 VBUS1 Device VS2 VBUS2 CIN UCS1001-2 CBUS EM_EN 3 V – 5.5 V M1 M2 Enable Detect Latch Statet Upon Fault PWR_EN SEL 3 V – 5.5 V LATCH VDD S0 ILIM 5 V Disable Detect Auto-recovery State Upon Fault VDD A_DET# GND ALERT# Figure4.2 UCS1001-2 System Configuration (No Charger Emulation) Figure4.3 shows a system configuration in which the UCS1001-1 provides a port power switch, low power Attach Detection, charger emulation (with no USB host), and charging active signaling. Figure4.4 shows a system configuration in which the UCS1001-2 provides a port power switch, low power Attach Detection, charger emulation (with no USB host), and portable device Attach Detection signaling. These configurations are useful for wall adapter type applications. Revision 1.2 (05-21-12) 24 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 15 K DPIN DPOUT 15 K DMIN DMOUT 5 V VS1 VBUS1 Device VS2 VBUS2 CIN UCS1001-1 CBUS EM_EN 3 V – 5.5 V M1 M2 Enable Detect Latch State Upon Fault PWR_EN SEL 3 V – 5.5 V LATCH VDD S0 ILIM 5 V Disable Auto-recovery Detect State Upon Fault VDD CHRG# GND ALERT# Figure4.3 UCS1001-1 System Configuration (No USB Host, with Charger Emulation) SMSC UCS1001 25 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet . 15 K DPIN DPOUT 15 K DMIN DMOUT 5 V VS1 VBUS1 Device VS2 VBUS2 CIN UCS1001-2 CBUS EM_EN 3 V – 5.5 V M1 M2 Enable Detect Latch State Upon Fault PWR_EN SEL 3 V – 5.5 V LATCH VDD S0 ILIM 5 V Disable Auto-recovery Detect State Upon Fault VDD A_DET# GND ALERT# Figure4.4 UCS1001-2 System Configuration (No USB Host, with Charger Emulation) Revision 1.2 (05-21-12) 26 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 4.1 UCS1001 Power States The UCS1001 has the following power states.  Off - This power state is entered when the voltage at the VDD pin voltage is < VDD_TH. In this state the device is considered “off”. The UCS1001 will not retain its digital states. The port power switch, bypass switch, and the high-speed data switches will be off. See Section 4.1.1, "Off State Operation".  Sleep - This is the lowest power state available. While in this state, the UCS1001 will respond to changes in emulation controls. The high-speed switch and all other functionality will be disabled. See Section 4.1.2, "Sleep State Operation".  Detect - This is a lower current power state. In this state, the device is actively looking for a portable device to be attached. The high-speed switch is disabled. See Section 4.1.3, "Detect State Operation".  Error - This power state is entered when a fault condition exists. See Section 4.1.5, "Error State Operation".  Active - This power state provides full functionality. While in this state, operations include activation of the port power switch, USB data line handshaking / charger emulation, and current limiting. See Section 4.1.4, "Active State Operation". SMSC UCS1001 27 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table4.1 shows the settings for the various power states, except Off and Error. If VDD < V , the DD_TH UCS1001 is in the Off state. To determine the mode of operation in the Active state, see Table8.1, "Active Mode Selection". APPLICATION NOTE: Using configurations not listed in Table4.1 is not recommended and may produce undesirable results. Table4.1 Power States Control Settings PORTABLE POWER M1, M2, DEVICE STATE VS PWR_EN S0 EM_EN ATTACHED BEHAVIOR Sleep X disabled 0 Not set to X All switches disabled. VBUS will be Data near ground potential. Pass- through. See Note4.1. X enabled 0 All = 0b X Detect X disabled 1 X X High-speed switch disabled. Port (see Chapter7, power switch disabled. Host- Detect State) < VS_UVLO enabled 1 All <> 0b X controlled transition to Active state (see Section 4.1.3.2, "Host- Controlled Transition from Detect to Active"). > V enabled 1 All <> 0b No High-speed switch disabled. S_UVLO Automatic transition to Active state when conditions met (see Section 4.1.3.1, "Automatic Transition from Detect to Active"). Active > V enabled 0 All <> 0b X High-speed switch enabled / S_UVLO (see Chapter8, and not disabled based on mode. Port power Active State) set to switch is on at all times. Attach and DCE Removal Detection disabled. Cycle Set to X High-speed switch disabled. Port DCE power switch is on at all times. Cycle Attach and Removal Detection disabled. See Note4.2. > V enabled 1 All <> 0b Yes Port power switch is on. Removal S_UVLO Detection enabled. Note4.1 In order to transition from Active state Data Pass-through mode into Sleep with these settings, change the M1, M2, and EM_EN pins before changing the PWR_EN pin. See Section 8.4, "Data Pass-through (No Charger Emulation)". Note4.2 If S0=’0’ and a portable device is not attached in DCE Cycle mode, the UCS1001 will be cycling through charger emulation profiles. There is no guarantee which charger emulation profile will be applied first when a portable device attaches. Revision 1.2 (05-21-12) 28 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 4.1.1 Off State Operation The device will be in the off state if VDD is less than V . When the UCS1001 is in the Off state, DD_TH it will do nothing, and all circuitry will be disabled. 4.1.2 Sleep State Operation When the UCS1001 is in the Sleep state, the device will be in its lowest power state. The high-speed switch, bypass switch, and the port power switch will be disabled. The Attach and Removal Detection feature will be disabled. VBUS will be near ground potential. The ALERT# pin will not be asserted. If asserted prior to entering the Sleep state, the ALERT# pin will be released. The A_DET# pin (UCS1001-2 only) will be released. Figure4.5 shows timing diagrams for waking the UCS1001. Wake with M1 or M2 to Active State Data Pass-through Mode (PWR_EN enabled, S0 = ‘0’, EM_EN = ‘0’, VS > V ) S_UVLO M1 or M2 ~3 ms Port power switch closed (Active state) Wake with S0 to Host-controlled Detect State (PWR_EN disabled, VS > V , M1 & M2 & EM_EN not all ‘0’ and not set to Data Pass-through) S_UVLO S0 ~3 ms Bypass switch closed (Detect state) Wake with S0 & PWR_EN to Auto-transition Detect State (VS > V , M1 & M2 & EM_EN not all ‘0’ and not set to Data Pass-through) S_UVLO S0 PWR_EN ~3 ms Bypass switch closed (Detect state) Figure4.5 Wake Timing 4.1.3 Detect State Operation When the UCS1001 is in the Detect state, the port power switch will be disabled. The high-speed switch is also disabled. The VBUS output will be connected to the VDD voltage by a secondary bypass switch (see Chapter7, Detect State). SMSC UCS1001 29 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet There is one non-recommended configuration which places the UCS1001 in the Detect state, but V will not be discharged and a portable device attachment will not be detected. For the BUS recommended configurations, see Table4.1, "Power States Control Settings".  NOT RECOMMENDED: PWR_EN is enabled, S0 = ‘1’, and M1, M2, and EM_EN are all ‘0’. There are two methods for transitioning from the Detect state to the Active state: automatic and host- controlled. 4.1.3.1 Automatic Transition from Detect to Active For the Detect state, set S0 to ‘1’, enable PWR_EN, set the EM_EN, M1, and M2 controls to the desired Active mode (Table8.1, "Active Mode Selection"), and supply VS > V . When a portable S_UVLO device is attached and an Attach Detection event occurs, the UCS1001 will automatically transition to the Active state and operate according to the selected Active mode. 4.1.3.2 Host-Controlled Transition from Detect to Active For the Detect state, set S0 to ‘1’, set the EM_EN, M1, and M2 controls to the desired Active mode (Table8.1, "Active Mode Selection"), and configure one of the following: 1) disable PWR_EN and supply VS, or 2) enable PWR_EN and don’t supply VS. When a portable device is attached and an Attach Detection event occurs, the host must respond to transition to the Active state. Depending on the control settings in the Detect state, this could entail 1) enabling PWR_EN or 2) supplying VS above the threshold. APPLICATION NOTE: If S0 is '1', PWR_EN is enabled, and VS is not present, the A_DET# pin will cycle if the current draw exceeds the current capacity of the bypass switch. 4.1.3.3 State Change from Detect to Active When conditions cause the UCS1001 to transition from the Detect state to the Active state, the following occurs: 1. The Attach Detection feature will be disabled; the Removal Detection feature remains enabled, unless S0 is changed to ’0’. 2. The bypass switch will be turned off. 3. The discharge switch will be turned on briefly. 4. The port power switch will be turned on. 4.1.4 Active State Operation Every time that the UCS1001 enters the Active state and the port power switch is closed, it will enter the mode as instructed by the host controller (see Chapter8, Active State). The UCS1001 cannot be in the Active state (and therefore, the port power switch cannot be turned on) if any of the following conditions exist: 1. VS < V . S_UVLO 2. PWR_EN is disabled. 3. M1, M2, and EM_EN are all set to '0'. 4. S0 is set to ‘1’ and an Attach Detection event has not occurred. Revision 1.2 (05-21-12) 30 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 4.1.5 Error State Operation The UCS1001 will enter the Error state from the Active state when any of the following events are detected: 1. The maximum allowable internal die temperature (T ) has been exceeded (see Section6.3.1.2). TSD 2. An over-current condition has been detected (see Section6.2.1). 3. An under-voltage condition on VBUS has been detected (see Section4.2.5). 4. A back-drive condition has been detected (see Section4.2.3). 5. A discharge error has been detected (see Section6.4). 6. An over-voltage condition on the VS pins. The UCS1001 will enter the Error state from the Detect state when a back-drive condition has been detected or when the maximum allowable internal die temperature has been exceeded. The UCS1001 will enter the Error state from the Sleep state when a back-drive condition has been detected. When the UCS1001 enters the Error state, the port power switch, the VBUS bypass switch, the high- speed switch are turned off, and the ALERT# pin is asserted. They will remain off while in this power state. The UCS1001 will leave this state as determined by the fault handling selection (see Section 6.5, "Fault Handling Mechanism"). When using the Latch fault handler and the user has re-activated the device by or toggling the PWR_EN control, the UCS1001 will check that all of the error conditions have been removed. If using Auto-recovery fault handler, after the t time period, the UCS1001 will check that all of the error CYCLE conditions have been removed. If all of the error conditions have been removed, the UCS1001 will return to the Active state or Detect state, as applicable. Returning to the Active state will cause the UCS1001 to restart the selected mode (see Section 8.2, "Active Mode Selection"). If the device is in the Error state and a Removal Detection event occurs, it will check the error conditions and then return to the power state defined by the PWR_EN, M1, M2, EM_EN, and S0 controls. 4.2 Supply Voltages 4.2.1 VDD Supply Voltage The UCS1001 requires 4.5V to 5.5V present on the VDDpin for core device functionality. 4.2.2 VS Source Voltage VS can be a separate supply and can be greater than VDD to accommodate high current applications in which current path resistances result in unacceptable voltage drops that may prevent optimal charging of some portable devices. SMSC UCS1001 31 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 4.2.3 Back-voltage Detection Whenever the following conditions are true, the port power switch will be disabled, the VBUS bypass switch will be disabled, the high-speed data switch will be disabled, and a Back-voltage event will be flagged. This will cause the UCS1001 to enter the Error power state (see Section 4.1.5, "Error State Operation"). 1. The VBUS voltage exceeds the VS voltage by V and the port power switch is closed. The BV_TH port power switch will be opened immediately. If the condition lasts for longer than t , then the MASK UCS1001 will enter the Error state. Otherwise, the port power switch will be turned on as soon as the condition is removed. 2. The VBUS voltage exceeds the VDD voltage by V and the VBUS bypass switch is closed. BV_TH The bypass switch will be opened immediately. If the condition lasts for longer than t , then the MASK UCS1001 will enter the Error state. Otherwise, the bypass switch will be turned on as soon as the condition is removed. 4.2.4 Back-drive Current Protection If a portable device is attached that is self-powered, it may drive the VBUS port to its power supply voltage level; however, the UCS1001 is designed such that leakage current from the VBUS pins to the VDD or VS pins shall not exceed I (if the VDD voltage is zero) or I (if the VDD voltage exceeds BD_1 BD_2 V ). DD_TH 4.2.5 Under-voltage Lockout on VS The UCS1001 requires a minimum voltage (V ) be present on the VSpin for Active power state. S_UVLO 4.2.6 Over-voltage Detection and Lockout on VS The UCS1001 port power switch will be disabled if the voltage on the VS pin exceeds a voltage (V ) for longer than the specified time (t ). This will cause the device to enter the Error state. S_OV MASK 4.3 Discrete Input Pins APPLICATION NOTE: If it is necessary to connect any of the control pins except the ILIM or SEL pins via a resistor to VDD or GND, the resistor value should not exceed 100k in order to meet the VIH and VIL specifications. 4.3.1 ILIM Input The ILIM input determines the initial ILIM setting, as shown in Table6.1, "UCS1001 ILIM Selection". 4.3.2 SEL Input The SEL pin selects the polarity of the PWR_EN control. If the SEL pin is high, the PWR_EN control is active high enable. If the SEL pin is low, the PWR_EN control is active low enable. This pin state is latched upon device power-up and further changes will have no effect on the PWR_EN control polarity. APPLICATION NOTE: If it is necessary to connect the SEL pin to ground via a resistor, a value less than 33k must be used. If it is necessary to connect the SEL pin to VDD via a resistor, the pull-up resistor may be any value up to 100k. Revision 1.2 (05-21-12) 32 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 4.3.3 M1, M2, and EM_EN Inputs The M1, M2, and EM_EN input controls determine the Active mode and affect the power state (see Table4.1, "Power States Control Settings" and Table8.1, "Active Mode Selection"). When these controls are all set to ‘0’ and PWR_EN is enabled, the UCS1001 Attach and Removal Detection feature is disabled. 4.3.4 PWR_EN Input The PWR_EN control enables the port power switch to be turned on if conditions are met and affects the power state (see Table4.1, "Power States Control Settings"). The port power switch cannot be closed if PWR_EN is disabled. However, if PWR_EN is enabled, the port power switch is not necessarily closed (see Section 4.1.4, "Active State Operation"). Polarity is controlled by the SEL pin. 4.3.5 Latch Input The Latch input control determines the behavior of the fault handling mechanism (see Section 6.5, "Fault Handling Mechanism"). 4.3.6 S0 Input The S0 control enables the Attach and Removal Detection feature and affects the power state (see Table4.1, "Power States Control Settings"). When S0 is set to ‘1’, an Attach Detection event must occur before the port power switch can be turned on. When S0 is set to ‘0’, the Attach and Removal Detection feature is not enabled. 4.4 Discrete Output Pins 4.4.1 ALERT#, CHRG#, and A_DET# Output Pins The ALERT# pin is an active low open-drain interrupt to the host controller. The ALERT# pin is asserted when an error occurs (see Section 4.1.5, "Error State Operation"). The ALERT# pin is released when all error conditions have been removed. The CHRG# pin (UCS1001-1 only) provides an active low open-drain output indication that charging of an attached device is active. It will remain asserted until this condition no longer exists and then will be automatically released. The A_DET# pin (UCS1001-2 only) provides an active low open-drain output indication that a valid Attach Detection event has occurred. It will remain asserted until the UCS1001 is placed into the Sleep state or a Removal Detection event occurs. For wake on USB, the A_DET# pin assertion can be utilized by the system. If the S0 control is ‘0’ and the UCS1001 is in the Active state, the A_DET# pin will be asserted regardless if a portable device is attached or not. If S0 is '1', PWR_EN is enabled, and VS is not present, the A_DET# pin will cycle if the current draw exceeds the current capacity of the bypass switch. 4.4.2 Interrupt Blanking The ALERT#, CHRG# (UCS1001-1 only), and A_DET# (UCS1001-2 only) pins will not be asserted for a specified time (up to t ) after power-up. Additionally, an error condition (except for the thermal BLANK shutdown) must be present for longer than a specified time (t ) before the ALERT# pin is asserted. MASK SMSC UCS1001 33 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Chapter 5 USB High-speed Data Switch 5.1 USB High-speed Data Switch The UCS1001 contains a series USB 2.0 compliant high-speed switch between the DPIN and DMIN pins and between the DPOUT and DMOUT pins. This switch is designed for high-speed, low latency functionality to allow USB 2.0 full-speed and high-speed communications with minimal interference. Nominally, the switch is closed in the Active state, allowing uninterrupted USB communications between the upstream host and the portable device. The switch is opened when: 1. The UCS1001 is actively emulating using any of the charger emulation profiles except CDP. 2. The UCS1001 is operating as a dedicated charger. 3. The UCS1001 is in the Detect state or in the Sleep state. APPLICATION NOTE: If the VDD voltage is less than V , the high-speed data switch will be disabled and DD_TH opened. 5.1.1 USB-IF High-speed Compliance The USB data switch will not significantly degrade the signal integrity through the device DP / DM pins with USB high-speed communications. Revision 1.2 (05-21-12) 34 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Chapter 6 USB Port Power Switch 6.1 USB Port Power Switch To assure compliance to various charging specifications, the UCS1001 contains a USB port power switch that supports two current limiting modes: trip and constant current (variable slope). The current limit (ILIM) is pin selectable. The switch also includes soft start circuitry and a separate short circuit current limit. The port power switch is on in the Active state (except when VBUS is discharging). 6.2 Current Limiting 6.2.1 Current Limit Setting The UCS1001 hardware set current limit, ILIM, can be one of eight values (see Table6.1). This resistor value is read once upon UCS1001 power-up. Unless connected to VDD, the resistors in Table6.1 are pull-down resistors. APPLICATION NOTE: If it is necessary to connect the ILIM pin to VDD via a pull-up resistor, it is recommended that this resistor value not exceed 100k. APPLICATION NOTE: ILIM pin pull-down resistors with values less than 33k will cause unexpected behavior. Table6.1 UCS1001 ILIM Selection ILIM RESISTOR (±5%) ILIM SETTING 47k 500mA 56k 900mA 68k 1000mA 82k 1200mA 100k 1500mA 120k 1800mA 150k 2000mA VDD 2500mA 6.2.2 Short Circuit Output Current Limiting Short circuit current limiting occurs when the output current is above the selectable current limit (I ). LIMx This event will be detected and the current will immediately be limited (within t time). If the SHORT_LIM condition remains, the port power switch will flag an Error condition and enter the Error state (see Section 4.1.5, "Error State Operation"). SMSC UCS1001 35 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 6.2.3 Soft Start When the PWR_EN control changes states to enable the port power switch, or an Attach Detection event occurs in the Detect power state and the PWR_EN control is already enabled, the UCS1001 invokes a soft start routine for the duration of the VBUS rise time (t ). This soft start routine will R_BUS limit current flow from VS into VBUS while it is active. This circuitry will prevent current spikes due to a step in the portable device current draw. In the case when a portable device is attached while the PWR_EN pin is already enabled, if the bus current exceeds ILIM, the UCS1001 current limiter will respond within a specified time (t ) SHORT_LIM and will operate normally at this point. The C capacitor will deliver the extra current, if any, as BUS required by the load change. 6.2.4 Current Limiting Modes The UCS1001 current limiting has two modes: trip and constant current (variable slope). Either mode functions at all times when the port power switch is closed. The current limiting mode used depends on the Active state mode (see Section 8.9, "Current Limit Mode Associations"). When operating in the Detect power state (see Section4.1.3), the current capacity at VBUS is limited to I as BUS_BYP described in Section 7.2, "VBUS Bypass Switch". 6.2.4.1 Trip Mode When using trip current limiting, the UCS1001 USB port power switch functions as a low resistance switch and rapidly turns off if the current limit is exceeded. While operating using trip current limiting, the VBUS output voltage will be held relatively constant (equal to the VS voltage minus the R * IBUS ON current) for all current values up to the ILIM. If the current drawn by a portable device exceeds ILIM, the following occurs: 1. The port power switch will be turned off (trip action). 2. The UCS1001 will enter the Error state and assert the ALERT# pin. 3. The fault handling circuitry will then determine subsequent actions. Trip current limiting is used when the UCS1001 is in Data Pass-through and Dedicated Charger Emulation Cycle (except when the BC1.2 DCP or Legacy 2 charger emulation profile is accepted), and when there’s no handshake. APPLICATION NOTE: To avoid cycling in trip mode, set ILIM higher than the highest expected portable device current draw. Figure6.1 shows operation of current limits in trip mode with the shaded area representing the USB 2.0 specified VBUS range. Dashed lines indicate the port power switch output will go to zero (e.g., trip) when ILIM is exceeded. Note that operation at all possible values of ILIM are shown in Figure6.1 for illustrative purposes only; in actual operation only one ILIM can be active at any time. Revision 1.2 (05-21-12) 36 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet ILIM (Amps) Operating 0.5 0.9 1.0 1.2 1.5 1.8 2.0 2.5 Current 5.25 5 4.75 = ILIM’s Trip action 4 (ILIM = 0.5 A) Trip action (ILIM = 2.5 A) s) olt 3 V S ( U B V 2 Power Switch Voltage and Current Output go to Zero when ILIM is Exceeded 1 0 0 0.5 0.9 1.0 1.2 1.5 1.8 2.0 2.5 IBUS (Amps) Figure6.1 Trip Current Limiting Operation 6.2.4.2 Constant Current Limiting (Variable Slope) Constant current limiting is used when a portable device handshakes using the BC1.2 DCP or Legacy 2 charger emulation profiles and the current drawn is greater than ILIM (and ILIM < 1.5A). It’s also used in BC1.2 CDP mode and during the DCE Cycle when a charger emulation profile is being applied and the timeout is active. In CC mode, the port power switch allows the attached portable device to reduce VBUS output voltage to less than the input VS voltage while maintaining current delivery. The V/I slope depends on the user set ILIM value. This slope is held constant for a given ILIM value. SMSC UCS1001 37 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Figure6.2 shows operation of current limits while using CC mode. Unlike trip mode, once IBUS current exceeds ILIM, operation continues at a reduced voltage and increased current. Note that the shaded area representing the USB 2.0 specified VBUS range is now restricted to an upper current limit of I . Note that the UCS1001 will heat up along each load line as voltage decreases. If the BUS_R2MIN internal temperature exceeds the T or T thresholds, the port power switch will open. Also note REG TSD that when the VBUS voltage is brought low enough, the port power switch will open. ILIM (Amps) 0.5 0.91.0 1.2 1.5 1.8 2.0 2.5 5.25 5 IBUS_R2MIN 4.75 = ILIM’s Constant resistance IBUS operation line 5 4 (ILIM = 1.5 A*) Constant resistance IBUS operation line 1 (ILIM = 0.5 A) 3 s) olt V S ( U B V 2 1 CC Mode - Power switch current increases as voltage decreases when ILIM is exceeded following constant resistance lines *1.5 A limit reduced by -3.5% internally 0 0 0.5 0.91.0 1.2 1.5 1.8 2.0 2.5 IBUS (Amps) Figure6.2 Constant Current Limiting (Variable Slope) Operation 6.3 Thermal Management and Voltage Protection 6.3.1 Thermal Management The UCS1001 utilizes two-stage internal thermal management. The first is named dynamic thermal management and the second is a fixed thermal shutdown. Revision 1.2 (05-21-12) 38 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 6.3.1.1 Dynamic Thermal Management For the first stage (active in both current limiting modes), referred to as dynamic thermal management, the UCS1001 automatically adjusts port power switch limits and modes to lower power dissipation when the thermal regulation temperature value is approached, as described below. If the internal temperature exceeds the T value, the port power switch is opened, the current limit REG (ILIM) will be lowered by one step and a timer is started (t ). When this timer expires, the port DC_TEMP power switch is closed and the internal temperature will be checked again. If it remains above the T REG threshold, the UCS1001 will repeat this cycle (open port power switch and reduce the ILIM setting by one step) until ILIM reaches its minimum value. APPLICATION NOTE: If the temperature exceeds the TREG threshold while operating in the DCE Cycle mode after a charger emulation profile has been accepted, the profile will be removed. The UCS1001 will not restart the DCE Cycle until one of the control inputs changes states to restart emulation. APPLICATION NOTE: The UCS1001 will not actively discharge VBUS as a result of the temperature exceeding TREG; however, any load current provided by a portable device or other load will cause VBUS to be discharged when the port power switch is opened, possibly resulting in an attached portable device resetting. If the UCS1001 is operating using constant current limiting (variable slope) and the ILIM setting has been reduced to its minimum set point and the temperature is still above T , the UCS1001 will REG switch to operating using trip current limiting. This will be done by reducing the I setting to BUS_R2MIN 100mA and restoring the ILIM setting to the value immediately below the programmed setting (e.g., if the programmed ILIM is 1.8A, the value will be set to 1.5A). If the temperature continues to remain above T , the UCS1001 will continue this cycle (open the port power switch and reduce the ILIM REG setting by one step). If the UCS1001 internal temperature drops below T - T , the UCS1001 will take action REG REG_HYST based on the following: 1. If the current limit mode changed from CC mode to trip mode, then a timer is started. When this timer expires, the UCS1001 will reset the port power switch operation to its original configuration allowing it to operate using constant current limiting (variable slope). 2. If the current limit mode did not change from CC mode to trip mode, or was already operating in trip mode, the UCS1001 will reset the port power switch operation to its original configuration. If the UCS1001 is operating using trip current limiting and the ILIM setting has been reduced to its minimum set point and the temperature is above T , the port power switch will be closed and the REG current limit will be held at its minimum setting until the temperature drops below T - T . REG REG_HYST 6.3.1.2 Thermal Shutdown The second stage thermal management consists of a hardware implemented thermal shutdown corresponding to the maximum allowable internal die temperature (T ). If the internal temperature TSD exceeds this value, the port power switch will immediately be turned off until the temperature is below T - T . TSD TSD_HYST SMSC UCS1001 39 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 6.4 VBUS Discharge The UCS1001 will discharge V through an internal 100 resistor when at least one of the following BUS conditions occurs:  The PWR_EN control is disabled (triggered on the inactive edge of the PWR_EN control).  A portable device Removal Detection event is flagged.  The VS voltage drops below a specified threshold (VS_UVLO) that causes the port power switch to be disabled.  When commanded into the Sleep power state via the EM_EN, M1, and M2 controls.  Before each charger emulation profile is applied.  Upon recovery from the Error state.  Any time that the port power switch is activated after the VBUS bypass switch has been on (i.e., whenever VBUS voltage transitions from being driven from VDD to being driven from VS, such as going from Detect to Active power state).  Any time that the VBUS bypass switch is activated after the port power switch has been on (i.e., going from Active to Detect power state). When the VBUS discharge circuitry is activated, the UCS1001 will confirm that VBUS was discharged. If the VBUS voltage is not below the V level, a discharge error will be flagged and the UCS1001 TEST will enter the Error state. 6.5 Fault Handling Mechanism The UCS1001 has two modes for handling faults: Latch (latch-upon-fault) or Auto-recovery (automatically attempt to restore the Active power state after a fault occurs). The fault handling mechanism used depends on the state of the LATCH pin. Faults include over-current, over-voltage (on VS), under-voltage (on VBUS), back-voltage (VBUS to VS or VBUS to VDD), discharge error, and maximum allowable internal die temperature (T ) exceeded (see Section 4.1.5, "Error State TSD Operation"). 6.5.1 Auto-recovery Fault Handling When the LATCH pin is low, auto-recovery fault handling is used. When an error condition is detected, the UCS1001 will immediately enter the Error state and assert the ALERT# pin (see Section4.1.5). Independently from the host controller, the UCS1001 will wait a preset time (t ), check error CYCLE conditions (t ), and restore Active operation if the error condition(s) no longer exist. The ALERT# TST pin will be released. 6.5.2 Latched Fault Handling When the LATCH pin is high, latch fault handling is used. When an error condition is detected, the UCS1001 will enter the Error power state and assert the ALERT# pin. Upon command from the host controller (by toggling the PWR_EN pin from enabled to disabled), the UCS1001 will check error conditions once and restore Active operation if error conditions no longer exist. If an error condition still exists, the host controller is required to issue the command again to check error conditions. Revision 1.2 (05-21-12) 40 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Chapter 7 Detect State 7.1 Device Attach / Removal Detection The UCS1001 can detect the attachment and removal of a portable device on the USB port. Attach and Removal Detection does not perform any charger emulation or qualification of the device. The high-speed switch is “off” during the Detect power state. 7.2 VBUS Bypass Switch In the Detect state, VDD is the voltage source; in the Active state, VS is the voltage source. The bypass switch and the port power switch are never both on at the same time. While the VBUS bypass switch is active, the current available to a portable device will be limited, and the Attach Detection feature is active. 7.3 Attach Detection The Attach Detection feature is only active in the Detect power state. When active, this feature constantly monitors for portable device attachment. When an Attach Detection event occurs, the UCS1001-2 will assert the A_DET# pin low. The UCS1001-1 internally flags the event. Once an Attach Detection event occurs, the UCS1001 will wait for the PWR_EN control to be enabled (if not already). When PWR_EN is enabled and VS is above the threshold, the UCS1001 will activate the USB port power switch and operate in the selected Active mode (see Chapter8, Active State). 7.4 Removal Detection The Removal Detection feature will be active in the Active and Detect power states if S0=1. This feature monitors for portable device removal. When a Removal Detection event is flagged, the following will be done: 1. Disable the port power switch and the bypass switch. 2. De-assert the A_DET# pin (UCS1001-2 only). 3. Enable an internal discharging device that will discharge the VBUS line. 4. Once the VBUS pin has been discharged, the device will return to the Detect state regardless of the PWR_EN control state. SMSC UCS1001 41 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Chapter 8 Active State 8.1 Active State Overview The UCS1001 has the following modes of operation in the Active state: Data Pass-through, BC1.2 DCP, BC1.2 SDP, BC1.2 CDP, and Dedicated Charger Emulation Cycle. The current limiting mode depends on the Active mode behavior (see Table8.2, "Current Limit Mode Options"). 8.2 Active Mode Selection The Active mode selection is controlled by three controls: EM_EN, M1, and M2, as shown in Table8.1. Table8.1 Active Mode Selection # M1 M2 EM_EN ACTIVE MODE 1 0 0 1 Dedicated Charger Emulation Cycle 2 0 1 0 Data Pass-through 3 0 1 1 BC1.2 DCP 4 1 0 0 BC1.2 SDP - See Note8.1 5 1 0 1 Dedicated Charger Emulation Cycle 6 1 1 0 Data Pass-through 7 1 1 1 BC1.2 CDP Note8.1 BC1.2 SDP behaves the same as the Data Pass-through mode with the exception that it is preceded by a VBUS discharge when the mode is entered per the BC1.2 specification. 8.3 BC1.2 Detection Renegotiation The BC1.2 specification allows a charger to act as an SDP, CDP, or DCP and to change between these roles. To force an attached portable device to repeat the charging detection procedure, VBUS must be cycled. In compliance with this specification, the UCS1001 automatically cycles VBUS when switching between the BC1.2 SDP, BC1.2 DCP, and BC1.2 CDP modes. 8.4 Data Pass-through (No Charger Emulation) When commanded to Data Pass-through mode, UCS1001 will close its USB high-speed data switch to allow USB communications between a portable device and host controller and will operate using trip current limiting. No charger emulation profiles are applied in this mode. Data Pass-through mode will persist until commanded otherwise by the M1, M2, and EM_EN controls. APPLICATION NOTE: If it is desired that the Data Pass-through mode operates as a traditional / standard port power switch, the S0 control should be set to ‘0’. When entering this mode, there is no automatic VBUS discharge. Revision 1.2 (05-21-12) 42 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet APPLICATION NOTE: When the M1, M2, and EM_EN controls are set to ‘0’, ‘1’, ‘0’ or to ‘1’, ‘1’, ‘0’ respectively, Data Pass-through mode will persist if the PWR_EN control is disabled; however, the UCS1001 will draw more current. To leave Data Pass-through mode, the PWR_EN control must be enabled before the M1, M2, and EM_EN controls are changed to the desired mode. 8.5 BC1.2 SDP (No Charger Emulation) When commanded to BC1.2 SDP mode, UCS1001 will discharge VBUS, close its USB high-speed data switch to allow USB communications between a portable device and host controller, and will operate using trip current limiting. No charger emulation profiles are applied in this mode. BC1.2 SDP mode will persist until commanded otherwise by the M1, M2, EM_EN, and PWR_EN controls. APPLICATION NOTE: If it is desired that the BC1.2 SDP mode operates as a traditional / standard port power switch, the S0 control should be set to ‘0’. 8.6 BC1.2 CDP When BC1.2 CDP is selected as the Active mode, UCS1001 will discharge VBUS, close its USB high- speed data switch, and apply the BC1.2 CDP charger emulation profile which performs handshaking per the specification. The combination of the UCS1001 CDP handshake along with a standard USB host comprises a charging downstream port. If the handshake is successful, the UCS1001 will operate using constant current limiting (variable slope). If the handshake is not successful, the UCS1001 will leave the applied CDP profile in place, leave the high-speed switch closed, enable constant current limiting, and persist in this condition until commanded otherwise by the M1, M2, EM_EN, and PWR_EN controls. The UCS1001 will respond per the BC1.2 specification to portable device initiated charger renegotiation requests. APPLICATION NOTE: BC1.2 compliance testing may require the S0 control to be set to ‘0’ (Attach and Removal Detection feature disabled) while testing is in progress. APPLICATION NOTE: When the UCS1001 is in BC1.2 CDP mode and the Attach and Removal Detection feature is enabled, if a power thief, such as a USB light or fan, attaches but does not assert DP, a Removal event will not occur when the portable device is removed. However, if a standard USB device is subsequently attached, Removal Detection will again be fully functional. As well, if PWR_EN is cycled or M1, M2, and / or EM_EN change state, a Removal event will occur and Attach Detection will be reactivated. 8.6.1 BC1.2 CDP Charger Emulation Profile The BC1.2 CDP charger emulation profile acts as described below. APPLICATION NOTE: All CDP handshaking is performed with the high-speed switch closed. 1. VBUS voltage is applied. 2. Primary Detection - When the portable device drives a voltage between 0.4V and 0.8V onto the DPOUT pin, the UCS1001 will drive 0.6V onto the DMOUT pin within 20ms. 3. When the portable device drives the DPOUT pin back to ‘0’, the UCS1001 will then drive the DMOUT pin back to ‘0’ within 20ms. 4. Optional Secondary Detection - If the portable device then drives a voltage of 0.6V (nominal) onto the DMOUT pin, the UCS1001 will take no other action. This will cause the portable device to observe a ‘0’ on the DPOUT pin and know that it is connected to a CDP. SMSC UCS1001 43 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 8.7 BC1.2 DCP When BC1.2 DCP is selected as the Active mode, UCS1001 will discharge VBUS and apply the BC1.2 DCP charger emulation profile per the specification. In BC1.2 DCP mode, the emulation timeout and requirement for portable device current draw are automatically disabled. When the BC1.2 DCP charger emulation profile is applied within the Dedicated Charger Emulation Cycle (see Section 8.10.1, "BC1.2 DCP Charger Emulation Profile Within DCE Cycle"), the timeout and current draw requirement are enabled. If the portable device is charging after the DCP charger emulation profile is applied, the UCS1001 will leave in place the resistive short, leave the high-speed switch open, and enable constant current limiting (variable slope). APPLICATION NOTE: BC1.2 compliance testing may require the S0 control to be set to ‘0’ (Attach and Removal Detection feature disabled) while testing is in progress. 8.7.1 BC1.2 DCP Charger Emulation Profile The BC1.2 DCP charger emulation profile is described below. 1. VBUS voltage is applied. A resistor (R ) is connected between the DPOUT and DMOUT DCP_RES pins. 2. Primary Detection - If the portable device drives 0.6V (nominal) onto the DPOUT pin, the UCS1001 will take no other action than to leave the resistor connected between DPOUT and DMOUT. This will cause the portable device to see 0.6V (nominal) on the DMOUT pin and know that it is connected to a DCP. 3. Optional Secondary Detection - If the portable device drives 0.6V (nominal) onto the DMOUT pin, the UCS1001 will take no other action than to leave the resistor connected between DPOUT and DMOUT. This will cause the portable device to see 0.6V (nominal) on the DPOUT pin and know that it is connected to a DCP. 8.8 Dedicated Charger When commanded to Dedicated Charger Emulation Cycle mode, the UCS1001 enables an attached portable device to enter its charging mode by applying specific charger emulation profiles in a predefined sequence. Using these profiles, the UCS1001 is capable of generating and recognizing several signal levels on the DPOUT and DMOUT pins. The preloaded charger emulation profiles include ones compatible with BC1.2 DCP, YD/T-1591 (2009) and most Apple and RIM portable devices. No active USB data communication is possible when charging in this mode. 8.8.1 Emulation Reset Prior to applying any of the charger emulation profiles, the UCS1001 will perform an emulation reset. This involves the following: 1. The UCS1001 resets the VBUS line by disconnecting the port power switch and connecting VBUS to ground via an internal 100 resistor. The port power switch will be held open for a time equal to t at which point the port power switch will be closed and the VBUS voltage applied. EM_RESET 2. The DPOUT and DMOUT pins will be pulled low using internal 15k pull-down resistors. APPLICATION NOTE: To help prevent possible damage to a portable device, the DPOUT and DMOUT pins have current limiting in place when the emulation profiles are applied. Revision 1.2 (05-21-12) 44 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 8.8.2 Emulation Cycling In Dedicated Charger Emulation Cycle mode, the charger emulation profiles will be applied in the following order: 1. Legacy 1 2. BC1.2 DCP 3. Legacy 2 4. Legacy 3 5. Legacy 4 6. Legacy 5 7. Legacy 6 8. Legacy 7 APPLICATION NOTE: If S0=’0’ and a portable device is not attached in DCE Cycle mode, the UCS1001 will be cycling through charger emulation profiles. There is no guarantee which charger emulation profile will be applied first when a portable device attaches. 8.8.3 DCE Cycle Retry If none of the charger emulation profiles cause a charge current to be drawn, the UCS1001 will perform emulation reset and cycle through the profiles again. The UCS1001 will continue to cycle through the profiles so as long as charging current is not drawn and the PWR_EN control is enabled. 8.9 Current Limit Mode Associations The UCS1001 will close the port power switch and use the current limiting mode as shown in Table8.2. Table8.2 Current Limit Mode Options ACTIVE MODE CURRENT LIMIT MODE Data Pass-through Trip mode BC1.2 DCP CC mode if ILIM < 1.5A, otherwise, trip mode BC1.2 SDP Trip mode BC1.2 CDP CC mode if ILIM < 1.5A, otherwise, trip mode DCE CYCLE During DCE Cycle when a charger CC mode if ILIM < 1.5A, otherwise, trip mode emulation profile is being applied BC1.2 DCP charger emulation profile CC mode if ILIM < 1.5A, otherwise, trip mode accepted Legacy 2 charger emulation profile CC mode if ILIM < 1.5A, otherwise, trip mode accepted Legacy 1 or Legacy 3 - Legacy 7 charger Trip mode emulation profile accepted SMSC UCS1001 45 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 8.10 Preloaded Charger Emulation Profiles The following charger emulation profiles are resident to the UCS1001: 1. Legacy 1 - See Section8.10.3 2. Legacy 2 - See Section8.10.2 3. Legacy 3 - See Section8.10.3 4. Legacy 4 - See Section8.10.3 5. Legacy 5 - See Section8.10.4 6. Legacy 6 - See Section8.10.4 7. Legacy 7 - See Section8.10.5 8. BC1.2 CDP - See Section8.6.1 9. BC1.2 DCP - See Section8.7.1 8.10.1 BC1.2 DCP Charger Emulation Profile Within DCE Cycle When the BC1.2 DCP charger emulation profile (Section 8.7.1, "BC1.2 DCP Charger Emulation Profile") is applied within the DCE Cycle (Dedicated Charger Emulation Cycle is selected as the Active mode), the behavior after the profile is applied is different than Active mode BC1.2 DCP (BC1.2 DCP in Table8.1) because the t timer is enabled during the DCE Cycle. EM_TIMEOUT During the DCE Cycle after the DCP charger emulation profile, the UCS1001 will perform one of the following: 1. If the portable device is charging, the UCS1001 will internally flag that a BC1.2 DCP was detected. The UCS1001 will leave in place the resistive shortleave the high-speed switch open, and then enable constant current limiting (variable slope). 2. If the portable device is not charging, the UCS1001 will stop applying the DCP charger emulation profile and proceed to the next charger emulation profile in the DCE Cycle. 8.10.2 Legacy 2 Charger Emulation Profile The Legacy 2 charger emulation profile does the following: 1. The UCS1001 will connect a resistor (R ) between DPOUT and DMOUT. DCP_RES 2. VBUS is applied. 3. If the portable device is charging, the UCS1001 will accept that this is the correct charger emulation profile for the attached portable device. The resistive short between the DPOUT and DMOUT pins will be left in place. The UCS1001 will use constant current limiting. 4. If the portable device is not charging, the UCS1001 will stop the Legacy 2 charger emulation. This will cause resistive short between the DPOUT and DMOUT pins to be removed. Emulation reset occurs, and the UCS1001 will initiate the next charger emulation profile. 8.10.3 Legacy 1, 3, 4, and 6 Charger Emulation Profiles Legacy 1, 3, 4, and 6 charger emulation profiles follow the same pattern of operation although the voltage that is applied on the DPOUT and DMOUT pins will vary. They do the following: 1. The UCS1001 will apply a voltage on the DPOUT pin using either a current-limited voltage source or a voltage divider between VBUS and ground with the center tap on the DPOUT pin. Revision 1.2 (05-21-12) 46 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 2. The UCS1001 will apply a possibly different voltage on the DMOUT pin using either a current- limited voltage source or a voltage divider between VBUS and ground with the center tap on the DMOUT pin. 3. VBUS voltage is applied. 4. If the portable device is charging, the UCS1001 will accept that the currently applied profile is the correct charger emulation profile for the attached portable device. The voltages applied to the DPOUT and DMOUTpins will remain in place. The UCS1001 will begin operating in trip mode 5. If the portable device is not charging, the UCS1001 will stop the currently applied charger emulation profile. This will cause all voltages put onto the DPOUT and DMOUTpins to be removed. Emulation reset occurs, and the UCS1001 will initiate the next charger emulation profile. 8.10.4 Legacy 5 Charger Emulation Profile Legacy 5 charger emulation profile does the following: 1. The UCS1001 will apply 900mV to both the DPOUT and the DMOUT pins. 2. VBUS voltage is applied. 3. If the portable device is charging, the UCS1001 will accept that the currently applied profile is the correct charger emulation profile for the attached portable device. The voltages applied to the DPOUT and DMOUTpins will remain in place. The UCS1001 will begin operating in trip mode 4. If the portable device is not charging, the UCS1001 will stop the currently applied charger emulation profile. This will cause all voltages put onto the DPOUT and DMOUTpins to be removed. Emulation reset occurs, and the UCS1001 will initiate the next charger emulation profile. SMSC UCS1001 47 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 8.10.5 Legacy 7 Charger Emulation Profile The Legacy 7 charger emulation profile does the following: 1. The UCS1001 will apply a voltage on the DPOUT pin using a voltage divider between VBUS and ground with the center tap on the DPOUT pin. 2. VBUS voltage is applied. 3. If the portable device is charging, the UCS1001 will accept that Legacy 7 is the correct charger emulation profile for the attached portable device. The voltage applied to the DPOUT pin will remain in place. The UCS1001 will begin operating in trip mode 4. If the portable device is not charging, the UCS1001 will stop the Legacy 7 charger emulation profile. This will cause the voltage put onto the DPOUT pin to be removed. Emulation reset occurs, and the UCS1001 will initiate the next charger emulation profile. Revision 1.2 (05-21-12) 48 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Chapter 9 Package Information Figure9.1 UCS1001 Package View SMSC UCS1001 49 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Figure9.2 UCS1001 Package Dimensions and Notes Revision 1.2 (05-21-12) 50 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Figure9.3 UCS1001 PCB Layout Notes 12 MIL VIA PATTERN Figure9.4 Recommended Thermal Landing Solder Paste Pattern SMSC UCS1001 51 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet 9.1 Package Markings The package is marked as shown in Figure9.5. TOP 0.41 LINE: 1 – SMSC Logo without circled (R) symbol 3x 0.56 LINE: 2 – Device ID, Version U 1 0 0 1 - V LINE: 3 – Last 7 digits of Lot Number 1 2 3 4 5 6 a LINE: 4 – Revision and Country Code (RCC) R C C e3 PIN 1 PB-FREE/GREEN SYMBOL (Matte Sn) LINES 1 to 3: CENTER HORIZONTAL ALIGNMENT LINE 4: LEFT HORIZONTAL ALIGNMENT BOTTOM BOTTOM MARKING NOT ALLOWED Figure9.5 UCS1001 Package Markings Revision 1.2 (05-21-12) 52 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Chapter 10 Typical Operating Curves Figure10.1 USB-IF High-speed Eye Diagram (without Figure10.2 USB-IF High-speed Eye Diagram (with data switch) data switch) Figure10.3 Short Applied After Power Up Figure10.4 Power Up Into A Short Figure10.5 Internal Power Switch Short Response Figure10.6 VBUS Discharge Behavior SMSC UCS1001 53 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Figure10.7 Data Switch Off Isolation vs. Frequency Figure10.8 Data Switch Bandwidth vs. Frequency Figure10.9 Data Switch On Resistance vs. Temp Figure10.10 Power Switch On Resistance vs. Temp Figure10.11 R Resistance vs.Temp Figure10.12 Power Switch On / Off Time vs. Temp DCP_RES Revision 1.2 (05-21-12) 54 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Figure10.13 VS Over-Voltage Threshold vs. Temp Figure10.14 VS Under Voltage Threshold vs. Temp Figure10.15 Detect State VBUS vs. IBUS Figure10.16 Trip Current Limit Operation vs. Temp. Figure10.17 IBUS Measurement Accuracy SMSC UCS1001 55 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Figure10.18 Active State Current vs. Temp Figure10.19 Detect State Current vs. Temp Figure10.20 Sleep State Current vs. Temp Revision 1.2 (05-21-12) 56 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Chapter 11 Document Revision History Table11.1 Customer Revision History REVISION LEVEL & DATE SECTION/FIGURE/ENTRY CORRECTION Revision 1.2 Cover  Certification added: “UL recognized and EN/IEC 60950-1 (05-21-12) (CB) certified” Revision 1.2 Cover  Source voltage: Vs MIN moved from 2.7 to 2.9V to (05-16-12) accomodate UL Table3.3, "Electrical  Source voltage: Vs MIN moved from 2.7 to 2.9V to Specifications" accomodate UL Revision 1.2 Cover  There are nine preloaded charger emulation profiles. (03-16-12) Chapter2, Pin Description  Changed “unused connection” to n/a for ILIM, SEL, LATCH, and S0 pins as they must be used.  Added Note2.1: Total leakage current from pins 3 and 4 (VBUS) to ground must be less than 100µA for proper attach / removal detection operation. Table3.3, "Electrical  Updated selectable current limits (ILIMx) min and max values. Specifications" Typical values did not change.  Changed IACTIVE from 500µA (TYP) to 650µA (TYP).  Changed IACTIVE from TBDµA (MAX) to 750µA (MAX).  Changed ISLEEP from TBDµA (MAX) to 8µA (MAX).  Changed IDETECT from 190µA (TYP) to 185µA (TYP).  Changed IDETECT from TBDµA (MAX) to 220µA (MAX).  Removed VS_OV MIN value (5.6V) and MAX value (TBD).  Changed RON_PSW from 70m (MAX) to 65m (MAX).  Changed ILEAK_VS from TBDµA (MAX) to 5µA (MAX).  Changed ILEAK_BYP from 0.5µA (MAX) to 3µA (MAX).  Changed IBD_1 from 2µA (MAX) to 3µA (MAX). Table4.1, "Power States  "Behavior" cell in the "Sleep" row: Clarified behavior by Control Settings" adding "VBUS will be near ground potential”. Section 4.1.2, "Sleep State  Clarified behavior by adding "VBUS will be near ground Operation" potential”. Section 4.2.3, "Back-voltage  Section “Back-voltage / Back-drive Detection” split into two. Detection" and Section  In Section 4.2.4, "Back-drive Current Protection", corrected 4.2.4, "Back-drive Current reference IBD_LK to match elec spec symbol IBD_1 and Protection" rewrote back-drive description. Section 6.2.4, "Current  Added: The current limiting mode used depends on the Active Limiting Modes" state mode (see Section 8.9, "Current Limit Mode Associations"). Section 6.2.4.1, "Trip Mode"  Added application note: To avoid cycling in trip mode, set ILIM higher than the highest expected portable device current draw. Table8.2, "Current Limit  Rearranged rows so DCE Cycle is grouped together. Mode Options"  Added row for DCE Cycle when a charger emulation profile is being applied. SMSC UCS1001 57 Revision 1.2 (05-21-12) DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table11.1 Customer Revision History (continued) REVISION LEVEL & DATE SECTION/FIGURE/ENTRY CORRECTION Revision 1.2 Section 8.8.2, "Emulation  Legacy 7 charger emulation profile added. (03-16-12) Cycling" cont. and Section 8.10.5, "Legacy 7 Charger Emulation Profile" Chapter10, Typical  Rearranged order of TOCs. Operating Curves  Added new TOCs: — Figure10.3, "Short Applied After Power Up" — Figure10.5, "Internal Power Switch Short Response" — Figure10.16, "Trip Current Limit Operation vs. Temp." — Figure10.17, "IBUS Measurement Accuracy" — Figure10.18, "Active State Current vs. Temp" — Figure10.19, "Detect State Current vs. Temp" — Figure10.20, "Sleep State Current vs. Temp"  Updated the following: — Figure10.6, "VBUS Discharge Behavior" — Figure10.11, "RDCP_RES Resistance vs.Temp" — Figure10.13, "VS Over-Voltage Threshold vs. Temp" — Figure10.14, "VS Under Voltage Threshold vs. Temp" — Figure10.15, "Detect State VBUS vs. IBUS" Revision 1.1 Table3.2, "Power  Missing units added. (11-21-11) Dissipation Summary" Table3.3, "Electrical  Changed tDET_CHARGE from 400ms to 800ms typ and Specifications" changed condition from C = 220µF to C = 500µF BUS BUS max.  VS Leakage Current changed from 0.8µA typical to 2.2µA.  Changed IBD_1 and IBD_2 from TBD typ to 0µA typ and from 1.5µA max to 2µA max  Changed ITST to ITEST and changed typ from 165 to 190mA.  Changed tON_PSW from 3ms to 0.75ms typical and t from 1ms to 0.75ms typical. OFF_PSW_INA  Added Discharge Time (TDISCHARGE) and Allowed Charge Time (t ). DET_CHARGE Table3.4, "ESD  Charged Device Model: changed from 200V to 500V Ratings"Section3.1 Note4.1  Added note: In order to transition from Active state Data Pass- through mode into Sleep with these settings, change the M1, M2, and EM_EN pins before changing the PWR_EN pin. Table4.1, "Power States  The high-speed switch is open in Sleep. Control Settings", Section 4.1.2, "Sleep State Operation", Section 5.1, "USB High- speed Data Switch" Section 4.2.2, "VS Source  Added. Voltage" Cover, Section 8.10.3,  Legacy 6 profile has been defined. "Legacy 1, 3, 4, and 6 Charger Emulation Profiles" Revision 1.2 (05-21-12) 58 SMSC UCS1001 DATASHEET

USB Port Power Controller with Charger Emulation Datasheet Table11.1 Customer Revision History (continued) REVISION LEVEL & DATE SECTION/FIGURE/ENTRY CORRECTION Revision 1.1 Section 8.4, "Data Pass-  Data Pass-through persists until M1, M2, or EM_EN controls (11-21-11) through (No Charger are changed. It is no longer affected by PWR_EN. Added cont. Emulation)" application note: When the M1, M2, and EM_EN controls are set to ‘0’, ‘1’, ‘0’ or to ‘1’, ‘1’, ‘0’ respectively, Data Pass- through mode will persist if the PWR_EN control is disabled; however, the UCS1001 will draw more current. To leave Data Pass-through mode, the PWR_EN control must be enabled before the M1, M2, and EM_EN controls are changed to the desired mode. Section 8.6, "BC1.2 CDP"  BC1.2 CDP mode uses constant current limiting. Added application note: BC1.2 compliance testing may require the S0 control to be set to ‘0’ (Attach and Removal Detection feature disabled) while testing is in progress.  Added application note: When the UCSX100X is in BC1.2 CDP mode and the Attach and Removal Detection feature is enabled, if a power thief, such as a USB light or fan, attaches but does not assert DP, a Removal event will not occur when the portable device is removed. However, if a standard USB device is subsequently attached, Removal Detection will again be fully functional. As well, if PWR_EN is cycled or M1, M2, and / or EM_EN change state, a Removal event will occur and Attach Detection will be reactivated. Section 8.7, "BC1.2 DCP"  Added application note: BC1.2 compliance testing may require the S0 control to be set to ‘0’ (Attach and Removal Detection feature disabled) while testing is in progress. Table8.2, "Current Limit  BC1.2 CDP charger emulation changed from using “trip” to Mode Options" “CC mode if ILIM < 1.5A, otherwise, trip mode”. Section 8.10.4, "Legacy 5  Added. The Legacy 5 charger emulation profile no longer Charger Emulation Profile" applies a voltage divider. It applies 900mV to DPOUT and DMOUT. Revision 1.0 Initial Release (08-18-11) SMSC UCS1001 59 Revision 1.2 (05-21-12) DATASHEET

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