DATA SHEET AAT4687: Over-Voltage Protection Switch Applications Description  Cell phones The AAT4687 OVPSwitch™ is a member of the Skyworks Application Specific Power MOSFET (ASPM™) product family. It is  Digital still cameras a P-channel MOSFET power switch with precise over-voltage  GPS protection control, designed to protect low-voltage systems  MP3 players against high-voltage faults up to +28 V. If the input voltage exceeds the programmed over-voltage threshold, the P-channel  Personal data assistants (PDAs) MOSFET switch is turned off to prevent damage to the output load  USB hot-swap/live-insertion devices circuits. The AAT4687 is available with an internally programmed over-voltage trip point or as an adjustable version programmed by two external resistors. Features The AAT4687 includes an under-voltage lockout (UVLO) protection  Over-voltage protection up to 28 V circuit, which puts the device into sleep mode at low input  Fixed or adjustable over-voltage protection threshold voltages, consuming less than 1 A of current. The AAT4687 also  3 V under-voltage lockout threshold includes an enable pin (EN) to enable or disable the device and an OVP, OTP fault indicator (FLT).  Fast OVP response:  0.7 s typical to over-voltage transient The AAT4687 is offered in a small 10-pin, 2.2 mm  2.0 mm SC70JW package, and is specified for operation over the 40 °C  Low operation quiescent current: to +85 °C ambient temperature range.  30 A typical  1 A max in shutdown (disabled) A typical application circuit is shown in Figure 1. The pin configurations are shown in Figure 2. Signal pin assignments and  Thermal shutdown protection functional pin descriptions are provided in Table 1.  100 m typical (130 m Max.) RDS(ON) at 5 V  OVP, OTP fault indicator  1.8 A maximum continuous current VIN VIO + 5 V 3 V ~ 28 V  Temperature range: 40 °C to +85 °C IN OUT VOUT  SC70JW (10-pin, 2.2 mm  2.0 mm) package (MSL1, 260 ºC R1 AAT4687 1C OμUFT per JEDEC J-STD-020) CIN 1 μF OVP FLT Fault Flag R2 EN GND Skyworks Green™ products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks tc220 Definition of Green™, document number Figure 1. AAT4687 Typical Application Circuit SQ04-0074. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201962C • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • June 3, 2014 1

DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH OVP 1 10 GND N/C 1 10 GND GND 2 9 GND GND 2 9 GND FLT 3 8 GND FLT 3 8 GND EN 4 7 OUT EN 4 7 OUT IN 5 6 OUT IN 5 6 OUT (a) Adjustable Version (b) Fixed Version tc221 Figure 2. AAT4687 Pinout – 10-Pin, 2.2 mm  2.0 mm SC70JW (Top View) Table 1. AAT4687 Signal Descriptions Pin Number Adjustable Fixed Name Description 1 N/C OVP Over-voltage protection threshold input (adjustable only). In the fixed version, this pin is not connected. 2, 8, 9, 10 GND Ground connection pin. FLT Over-voltage or over-temperature fault reporting output pin. Open drain. FLT goes low when input voltage exceeds the 3 over-voltage threshold or an over-temperature fault occurs. An external pull up resistor to VIO (6.5 V max) should be added. EN Enable input pin, active low. An internal pull-down resistor is connected on this pin. Connect to ground for normal 4 operation. Connect to high (6.5 V Max) to shut down the device, which then draws less than 1 A of current. 5 IN Power input pin. Connect 1 F capacitor from IN to GND. 6, 7 OUT Output. Connect a 0.1 F ~ 47 F capacitor from OUT to GND. Electrical and Mechanical Specifications Typical performance characteristics of the AAT4687 are shown in Figures 3 through 20 The absolute maximum ratings of the AAT4687 are provided in Table 2, the thermal information is listed in Table 3, and electrical specifications are provided in Table 4. Table 2. AAT4687 Absolute Maximum Ratings (Note 1) Parameter Symbol Minimum Maximum Units IN to GND VIN 0.3 +30 V OVP to GND VOVP 0.3 +6.5 V FLT, EN to GND VFLT, VEN 0.3 +6.5 V OUT to GND VOUT 0.3 VIN + 0.3 V Maximum continuous switch current IMAX 1.8 A Operating junction temperature range TJ 40 150 ºC Storage temperature TSTG 40 150 ºC Maximum soldering temperature (at leads) TLEAD 300 ºC Note 1: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed may result in permanent damage to the device. Table 3. AAT4687 Thermal Information Parameter Symbol Value Units Maximum thermal resistance (Note 1) JA 160 ºC/W Maximum power dissipation (Note 1, Note 2) PD 625 mW Note 1: Mounted on an FR4 board. Note 2: Derate 6.25 mW/°C above 25 °C. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 2 June 3, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 201962C

DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH CAUTION: Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device. This device must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times. Table 4. AAT4687 Electrical Specifications (Note 1) (VIN = 5 V, TA = –40 C to +85C, Unless Otherwise Noted, Typical Values are TA = 25 C) Parameter Symbol Test Condition Min Typical Max Units Input over-voltage protection range VIN_MAX 28 V Normal operating input voltage range VIN 3 14 V Operation quiescent current IQ VIN = 5 V, EN = 0 V, IOUT = 0 A 30 60 A Shutdown supply current ISD(OFF) EN = VIN, VIN = 5.5 V, VOUT = 0 V 1 A Under-voltage lockout threshold VUVLO Rising edge 3.0 3.3 V Under-voltage lockout threshold hysteresis VUVLO_HYS 0.1 V Adjustable Over-voltage lockout threshold, OVP pin VOVP_TH Rising edge 1.084 1.1 1.117 V Over-voltage lockout threshold hysteresis, VOVP_HYS 23 mV OVP pin Fixed Over-voltage lockout threshold, IN pin VOVPT Rising edge 6.5 V (Note 2) Over-voltage lockout threshold hysteresis, % of VOVP_HYS 2.1 IN pin VOVPT MOSFET Switch PMOS On-resistance RDS(ON) IOUT = 1500 mA, TA = 25 °C 100 130 m Switch Off-leakage ID(OFF) EN = VIN 1 A Logic EN input low voltage VEN(L) 0.4 V EN input high voltage VEN(H) 1.6 V EN input leakage IEN VEN = 5.5 V or 0 V 0.5 2.0 A FLT output voltage low FLTOL IFLT = 1 mA 0.4 V FLT output leakage current FLTIOL 1 A Timing FLT blanking time tBLK_FLT From de-assertion of OV 5 10 15 ms FLT assertion delay time from over-voltage tD_FLT From assertion of OV 1 s (OV) Over-voltage release time tRLS_OV VIN = 5 V, VOVP fall from 1.13 V to 1.07 V in 1 ns 5 10 15 ms Over-voltage response time tRESP_OV VIN = 5V, VOVP rise from 1.07 V to 1.13 V in 1 ns 0.7 s Turn on delay time tON VIN = 5V; ROUT = 10 ; COUT = 1 F 10 ms Turn on rise time tR VIN = 5V; ROUT = 10 ; COUT = 1 F 1 ms Turn off delay time tOFF VIN = 5V; ROUT = 10 ; COUT = 1 F 9 ms Turn off fall time tF VIN = 5V; ROUT = 10 ; COUT = 1 F 4.5 ms Thermal Protection Shutdown temperature TSHDN 150 °C Over-temperature shutdown hysteresis THYS 20 °C Note 1: Performance is guaranteed only under the conditions listed in this table. Note 2: Fixed OVP Threshold Voltage Version is available from 5 V to 14 V at 50 mV step. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201962C • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • June 3, 2014 3

DATA SHEET • AAT4687: SINGLE CELL LI+ SWITCH MODE BATTERY CHARGER Typical Performance Characteristics (VIN = 5 V, TA = –40 C to +85C, Unless Otherwise Noted, Typical Values are TA = 25 C) 90 40 80 μQuiescent Current (A) 3465700000 μQuiescent Current (A) 22330505 20 10 tc222 15 tc223 3 4 5 6 7 8 9 10 11 12 13 14 -40 -15 10 35 60 85 Supply Voltage (V) Temperature (°C) Figure 3. Operation Quiescent Current vs Supply Voltage Figure 4. Operation Quiescent Current vs Temperature (VIN = 5 V, No Load) 4.2 0.42 μA) 3.6 μA) 0.35 urrent ( 3 urrent ( 0.28 C 2.4 C ply ply 0.21 up 1.8 up S S n n 0.14 w 1.2 w o o d d ut 0.6 ut 0.07 h h S 0 tc224 S 0.00 tc225 2 4 6 8 10 12 14 16 18 20 22 24 26 28 -40 -15 10 35 60 85 Supply Voltage (V) Temperature (°C) Figure 5. Shutdown Supply Current vs Supply Voltage Figure 6. Shutdown Supply Current vs Temperature (VIN = 6.5 V) 0.014 160 A) μ 0.012 e Current ( 00..001008 Ωce (m) 112400 g n a a Off Leak 00..000046 n-Resist 100 h O 80 c Swit 00..000020 tc226 60 tc227 2 4 6 8 10 12 14 16 18 20 22 24 26 28 -40 -15 10 35 60 85 Supply Voltage (V) Temperature (°C) Figure 7. Switch Off Leakage vs Supply Voltage Figure 8. PMOS On-Resistance vs Temperature (VIN = 5 V, ILOAD = 1 A) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201962C • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • June 3, 2014 9

DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH 13 OVP (1 V/div) 12 11 s) (500 (m2 AV//VddIOOiiUUvvTT)) t (m_BLKFLT 190 8 FLT (5 V/div) tc228 7-40 -15 10 35 60 85tc229 Time (2 ms/div) Temperature (°C) Figure 9. FLT Blanking Time (VIN = 5 V, COUT = 1 F, OVP Figure 10. FLT Blanking Time vs Temperature Transient from 1.2 V to 0.8 V, ROUT = 10 ) 3.50 13 UVLO_Hi UVLO_Low 3.30 12 V) old ( 3.10 ms) 11 esh (OV O Thr 2.90 t_RLS 10 L V U 2.70 9 2.50 tc230 8 tc231 -40 -15 10 35 60 85 -40 -15 10 35 60 85 Temperature (°C) Temperature (°C) Figure 11. Under-Voltage Lockout Threshold vs Temperature Figure 12. Over-Voltage Release Time vs Temperature (VIN = 5 V, COUT = 1 F, ROUT = 10 ) 1.12 800 OVP_Threshold_Hi 1.11 OVP_Threshold_Low 750 V) 1.10 P Threshold ( 11..0089 t (ns)_RESPOV 675000 V 1.07 O 600 1.06 1.05-40 -15 10 35 60 85tc232 550-40 -15 10 35 60 85tc233 Temperature (°C) Temperature (°C) Figure 13. Over-Voltage Lockout Threshold vs Temperature Figure 14. Over-Voltage Response Time vs Temperature Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201962C • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • June 3, 2014 5

DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH 1.4 1.4 1.3 1.3 1.2 1.2 V) V) V() (ENH 1.1 V (()ENL 1.1 1 1 −40 °C −40 °C 0.9 25 °C 0.9 25 °C 0.8 85 °C tc234 0.8 85 °C tc235 3 4 5 6 7 8 9 10 11 12 13 14 3 4 5 6 7 8 9 10 11 12 13 14 Supply Voltage (V) Supply Voltage (V) Figure 16. EN Input Low Voltage vs Supply Voltage Figure 15. EN Input High Voltage vs Supply Voltage VOUT 5.0 V (2 V/div) VOUT 0 V (2 V/div) EN (2 V/div) 0 V EN (2 V/div) 0 V tc236 tc237 Time (2 ms/div) Time (2 ms/div) Figure 17. Turn On Delay Time (VIN = 5 V, ROUT = 10 ) Figure 18. Turn Off Delay Time (VIN = 5 V, ROUT = 10 ) VIN (5 V/div) OVP (1 V/div) OVP (1 V/div) 0.7 μs VOUT VOUT (100 mV/div) (2 V/div) FLT FLT (5 V/div) (5 V/div) tc238 tc239 Time (5 μs/div) Time (500 ns/div) Figure 19. Over-Voltage Protection Response Figure 20. Over-Voltage Response Time (VIN = 5 V, OVP Transient from 0.8 V to 1.2 V) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 6 June 3, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 201962C

DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH Fixed Option (metal programable) IN OUT FLT OVP Sense OVP and Control EN GND tc240 Figure 21. AAT4687 Functional Block Diagram Functional Description MOSFET is turned off. Hysteresis of 100 mV is included to ensure circuit stability. The AAT4687 provides up to 28 V over-voltage protection when powering low-voltage systems such as cell phones, MP3 Over-Voltage Protection (OVP) players, and PDAs or when charging Lithium-Ion batteries from a poorly regulated supply. The AAT4687 is inserted between the The AAT4687 adjustable version has a 1.1 V ±1.5% power supply or charger source and the load to be protected. over­voltage trip threshold on the OVP pin. With a resistor The AAT4687 IC includes a low-resistance P-channel MOSFET, divider on the OVP pin from IN to GND, the over-voltage trip under-voltage lockout protection, over-voltage monitor, fast point can be adjusted anywhere within the input voltage range shut-down circuitry, and a fault output flag. (see Table 5). Once the over-voltage trip level is triggered, the PMOS switch controller will turn off the PMOS in less than In normal operation, the P-channel MOSFET acts as a slew-rate 0.7 s. controlled load switch, connecting and disconnecting the power supply from IN to OUT. A low-resistance MOSFET is used to In the AAT4687 fixed version, the resistor divider is internally minimize the voltage drop between the voltage source and the integrated with the input voltage trip point at 6.5 V. The fixed load and to reduce power dissipation. When the voltage on the version of the AAT4687 does not have a connection to the input exceeds the over-voltage protection trip voltage (internally internal OVP circuitry, and Pin 1 is designed to be left set in the fixed voltage version or externally by a voltage divider unconnected. to the OVP pin for the adjustable version), the device immediately turns off the internal P-channel FET, disconnecting Over-Temperature Protection (OTP) the load from the input and preventing damage to downstream If the ambient temperature of the device exceeds TSHDN, the components. Simultaneously, the fault flag is raised, alerting OVP switch is turned off, and the pin is driven low. The OVP the system to a problem. switch recovers automatically when the junction temperature If an over-voltage condition is applied at the time of the device falls below (TSHDN  20 °C). enable, then the switch will remain OFF. Fault Indicator (FLT) A functional block diagram is shown in Figure 21. Figure 22 shows the timing diagram. The output is an active-low open-drain fault reporting output. A pull-up resistor should be connected from FLT to the logic I/O Under-Voltage Lockout (UVLO) voltage of the host system. FLT is asserted immediately if an over-voltage or over-temperature fault occurs. The AAT4687 has a fixed 3.0 V under-voltage lockout level (UVLO). When the input voltage is less than the UVLO level, the Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201962C • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • June 3, 2014 7

DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH VOVPT VOVPT IN tD_FLT tBLK_FLT FLT tRESP_OV OUT tRLS_OV 50% EN tOFF tON 50% 90% 90% 50% OUT 10% 10% tR tF tc244 Figure 22. AAT4687 Timing Diagram Enable Control (EN) and the sensitive devices, they are insulated from the voltage spike, and the input supply is disconnected in 0.7 s. EN is an active-low enable input. EN is driven low, connected to ground, or left floating for normal device operation. Taking EN Figure 23 shows the over-voltage protection response time test high turns off the MOSFET. In case of an over-voltage or UVLO circuit, with R1 = 487 k, R2 = 110 k, COUT = 1 F and condition, toggling EN does not override the fault condition and ROUT = 10 . Figure 24 is the typical over-voltage response the switch remains off. time curve. The input voltage is rapidly increased from 5 V to 12 V by a voltage surge or voltage spike. The voltage at the OVP Device Operation pin is also increased until it reaches the over-voltage trip point. At this point, the FLT pin is pulled low and the output voltage On initial power-up, if VIN < VUVLO or if VOVP > VOVP_TH (1.1 V), starts to fall. Figure 25 shows a zoom-in scope capture of the the PMOS is held off. If VUVLO < VIN, VOVP < VOVP_TH, and EN is OVP response time; the output is disconnected from the input in low, the device enters startup after a 10 ms internal delay. as little as 0.7 s. Application Information Adjustable Version - Over-Voltage Protection Resistors Over-Voltage Protection The over-voltage protection threshold is programmed with two resistors: R1 and R2. To limit current flow through the external The AAT4687 over-voltage protection circuit provides fast resistor string while maintaining good noise immunity, use protection against transient voltage spikes and short duration spikes of high voltage from the power supply lines. The smaller resistor values, such as 10 k for R2. Using a larger value further reduces system current, but also increases the AAT4687 can quickly disconnect the input supply from the load and avoid damage to sensitive components. impedance of the OVP node, making it more sensitive to external noise and interference. A suggested value for R2 is In portable product applications, removing the battery pack 110 k. In the case of R2 = 110 k and VOVP_TH = 1.1 V, R1 during charging can create large transients, and a high voltage can be approximated by the following formula: spike can occur which can damage other electronic components (such as the battery charger) in the product. A "hot  V  V  R1 OVPT 1R2  OVPT 1110 panludg "re olef athsee aA Cv/oDltCa gwea sllp aikdea pfrtoemr i nthtoe tthraen AsCfo romuteler.t Acsa na crreesautlet, VOVP_TH   1.1  some sensitive components within the product can be Where the voltage is in V, resistance in k. damaged. Whe the AAT4687 is placed between the power lines Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 8 June 3, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 201962C

DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH SCOPE +12 V LOAD AAT4687 10 1 8 GND VIN 23 76 VOUT 4 5 +5 V GND OVP Fault tc241 Figure 23. Over-Voltage Protection Response Time Test Circuit Table 5 summarizes resistor values for various over-voltage (5 V/dVivIN) settings. Use 1% tolerance metal film resistors for programming the desired OVP setting. OVP (1 V/div) (2 V/VdOiUvT) Table 5. Recommended OVP Setting for the Adjustable Version R2 (k) R1 (k) VOVPT Setting (V) FLT (5 V/div) 110 387 5.0 tc238 110 487 6.0 110 536 6.5 Time (5 μs/div) 110 787 9.0 Figure 24. Typical Over-Voltage Response Time 110 1000 11.0 110 1300 14.0 110 1540 16.5 110 1780 19.0 OVP (1 V/div) 110 2050 21.5 0.7 μs 110 2320 24.0 VOUT (100 mV/div) 110 2550 26.5 FLT (5 V/div) tc239 Time (500 ns/div) Figure 25. Typical Over-Voltage Response (Zoom View) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201962C • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • June 3, 2014 9

DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH Input Capacitor where TA = +25 °C. At TA = +85 °C, PD(MAX) = 250 mW. At A 1 F or larger capacitor is typically recommended for CIN. CIN TA = +25 °C, PD(MAX) = 625 mW. should be located as close to the device VIN pin as practically The maximum continuous output current for the AAT4687 is a possible. Ceramic, tantalum, or aluminum electrolytic function of the package power dissipation and the RDS of the capacitors may be selected for CIN. There is no specific MOSFET at TJ(MAX). The maximum RDS of the MOSFET at TJ(MAX) capacitor equivalent series resistance (ESR) requirement for CIN. is calculated by increasing the maximum room temperature. However, for higher current operation, ceramic capacitors are For maximum current, refer to the following equation: recommended for CIN due to their inherent capability over tantalum capacitors to withstand input current surges from low P I  D(MAX) impedance sources such as batteries in portable devices. OUT(MAX) R DS Capacitors are typically manufactured in different voltage The maximum allowable output current for the AAT4687 is ratings. If the maximum possible surge voltage is known, select 1.8 A. If the output current exceeds 1.8 A, the device is capacitors with a voltage rating at least 5 V higher than the damaged. maximum possible surge voltage. Otherwise, 50 V rated capacitors are generally good for most OVP applications to prevent any surge voltage. Printed Circuit Board Layout Recommendations For proper thermal management and to take advantage of the Output Capacitor low RDS(ON) of the AAT4687, certain circuit board layout rules A 0.1 F  47 F output capacitor is required at the output. should be followed: Likewise, with the output capacitor, there is no specific  VIN and VOUT should be routed using wider than normal traces, capacitor ESR requirement. COUT may be increased to and GND should be connected to a ground plane. accommodate any load transient condition.  To maximize package thermal dissipation and power handling Thermal Considerations and Maximum Output Current capacity of the AAT4687 SC70JW-10 package, the ground plane area connected to the ground pins should be as large as The AAT4687 is designed to deliver a continuous output load possible. current. The limiting characteristic for maximum safe operating output load current is package power dissipation. In order to  For best performance, CIN and COUT should be placed close to the package pins. obtain high operating currents, careful device layout and circuit operating conditions must be taken into account. The following description assumes the load switch is mounted on a printed Evaluation Board Description circuit board utilizing the minimum recommended footprint in The AAT4687 Evaluation Board is used to test the performance the Printed Circuit Board Layout Recommendations section. At of the AAT4687. An Evaluation Board schematic diagram is any given ambient temperature (TA), the maximum package provided in Figure 26. Layer details for the Evaluation Board are power dissipation can be determined by the following equation: shown in Figure 27. The Evaluation Board has additional P  TJ(MAX)TA components for easy evaluation, and the bill of materials D(MAX)  required for the system is shown in Table 6. JA Constants for the AAT4687 are maximum junction temperature (TJ(MAX) = +125 °C) and package thermal resistance Package Information (JA = 160 °C/W). Worst-case conditions are calculated at the Package dimensions for the 10-pin SC70JW package are shown maximum operating temperature, TA = +85 °C. Typical in Figure 28. Tape and reel dimensions are shown in Figure 29. conditions are calculated under normal ambient conditions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 10 June 3, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 201962C

DATA SHEET • AAT4687: SINGLE CELL LI+ SWITCH MODE BATTERY CHARGER +5V VIN DS Red LED VOUT U1 AAT4687 R 5 3 IN FLT 8 GND OUT 7 1.5 kΩ R1 9 6 499 kΩ 10 GND OUT 4 C1 GND EN C2 C3 1 2 1 μF OVP GND 1 μF R2 110 kΩ JP1 Enable tc242 Figure 26. AAT4687 Evaluation Board Schematic Table 6. AAT4687 Evaluation Board Bill of Materials Component Part number Description Manufacturer U1 AAT4687 Over-voltage protection switch Skyworks R1 RC0603FR-07499KL Resistor 499 k 1/10W 1% 0603 SMD Yageo R2 RC0603FR-07110KL Resistor 110 k 1/10W 1% 0603 SMD Yageo R3 RC0603FR-071K5L Resistor 1.5 k 1/10W 1% 0603 SMD Yageo C1 GRM31MR71H105K Ceramic capacitor 1 F 1206 X7R 50V 10% Murata C2 GRM21BR71C105K Ceramic capacitor 1 F 0805 X7R 16V 10% Murata C3 Not populated HB D1 0805KRCT Red LED 0805 HB (a) Component Side Layout (b) Solder Side Layout tc243 Figure 27. AAT4687 Evaluation Board Layer Details Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201962C • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • June 3, 2014 9

DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH 0.40 BSC 0 0 1 2 0. 0. ±± ±± 5 0 7 2 1. 2. Pin 1 Location 0.225 ±± 0.075 Top View 2.00 ±± 0.20 5 0 0. ±± ±± 0.15 MAX 0.15 0.85 1.10 ±± 0.05 0.45 ±± 0.10 4°° ±± 4°° 05 0.100 0. 7°° ±± 3°° 2.10 ±± 0.30 Side View End View All dimensions in millimeters. tc37 Figure 28 AAT4687 10-pin SC70JW Package Dimensions 4.00 ± 0.10 1.30 ± 0.10 2.00 ± 0.05 1.55 ± 0.05 1.75 ± 0.05 3.50 ± 0.05 0 3 0. ± 0 2.50 ± 0.10 0 8. Pin 1 Location 0.20 ± 0.03 2.40 ± 0.10 4.00 ± 0.10 All dimensions are in millimeters. tc38 Figure 29. AAT4687 10-pin SC70JW Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 12 June 3, 2014 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 201962C

DATA SHEET • AAT4687 OVER-VOLTAGE PROTECTION SWITCH Ordering Information Part Marking Model Name Manufacturing Part Number (Note 2) Evaluation Board Part Number OVP Trip Voltage (Note 1) Adjustable 7QXYY AAT4687IJQ-T1 AAT4687IJQ-EVB AAT4687 over-voltage protection switch 6.5 V AAT4687IJQ-6.5-T1 AAT4687IJQ-6.5-EVB Note 1: XYY = assembly and date code. Note 2: Sample stock is generally held on part numbers listed in BOLD. Copyright © 2012-2014 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes. No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of Sale. THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury, death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters. Skyworks and the Skyworks symbol are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 201962C • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • June 3, 2014 13