LED Driver BCR 320U E6327 / BCR 321U E6327 Datasheet Revision 2.1, 2015-01-28 Power Management & Multimarket

Edition 2015-01-28 Published by Infineon Technologies AG 81726 Munich, Germany © 2015 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered.

BCR 320U E6327 / BCR 321U E6327 Revision History Page or Item Subjects (major changes since previous revision) Revision 2.1, 2015-01-28 All Using full sales names BCR 320U E6327 / BCR 321U E6327 instead of short form BCR320U / BCR321U Page7 Halogen free logo removed Trademarks of Infineon Technologies AG AURIX™, C166™, CanPAK™, CIPOS™, CIPURSE™, EconoPACK™, CoolMOS™, CoolSET™, CORECONTROL™, CROSSAVE™, DAVE™, DI-POL™, EasyPIM™, EconoBRIDGE™, EconoDUAL™, EconoPIM™, EconoPACK™, EiceDRIVER™, eupec™, FCOS™, HITFET™, HybridPACK™, I²RF™, ISOFACE™, IsoPACK™, MIPAQ™, ModSTACK™, my-d™, NovalithIC™, OptiMOS™, ORIGA™, POWERCODE™; PRIMARION™, PrimePACK™, PrimeSTACK™, PRO-SIL™, PROFET™, RASIC™, ReverSave™, SatRIC™, SIEGET™, SINDRION™, SIPMOS™, SmartLEWIS™, SOLIDFLASH™, TEMPFET™, thinQ!™, TRENCHSTOP™, TriCore™. Other Trademarks Advance Design System™ (ADS) of Agilent Technologies, AMBA™, ARM™, MULTI-ICE™, KEIL™, PRIMECELL™, REALVIEW™, THUMB™, µVision™ of ARM Limited, UK. AUTOSAR™ is licensed by AUTOSAR development partnership. Bluetooth™ of Bluetooth SIG Inc. CAT-iq™ of DECT Forum. COLOSSUS™, FirstGPS™ of Trimble Navigation Ltd. EMV™ of EMVCo, LLC (Visa Holdings Inc.). EPCOS™ of Epcos AG. FLEXGO™ of Microsoft Corporation. FlexRay™ is licensed by FlexRay Consortium. HYPERTERMINAL™ of Hilgraeve Incorporated. IEC™ of Commission Electrotechnique Internationale. IrDA™ of Infrared Data Association Corporation. ISO™ of INTERNATIONAL ORGANIZATION FOR STANDARDIZATION. MATLAB™ of MathWorks, Inc. MAXIM™ of Maxim Integrated Products, Inc. MICROTEC™, NUCLEUS™ of Mentor Graphics Corporation. MIPI™ of MIPI Alliance, Inc. MIPS™ of MIPS Technologies, Inc., USA. muRata™ of MURATA MANUFACTURING CO., MICROWAVE OFFICE™ (MWO) of Applied Wave Research Inc., OmniVision™ of OmniVision Technologies, Inc. Openwave™ Openwave Systems Inc. RED HAT™ Red Hat, Inc. RFMD™ RF Micro Devices, Inc. SIRIUS™ of Sirius Satellite Radio Inc. SOLARIS™ of Sun Microsystems, Inc. SPANSION™ of Spansion LLC Ltd. Symbian™ of Symbian Software Limited. TAIYOYUDEN™ of Taiyo Yuden Co. TEAKLITE™ of CEVA, Inc. TEKTRONIX™ of Tektronix Inc. TOKO™ of TOKO KABUSHIKI KAISHA TA. UNIX™ of X/Open Company Limited. VERILOG™, PALLADIUM™ of Cadence Design Systems, Inc. VLYNQ™ of Texas Instruments Incorporated. VXWORKS™, WIND RIVER™ of WIND RIVER SYSTEMS, INC. ZETEX™ of Diodes Zetex Limited. Last Trademarks Update 2011-11-11 Datasheet 3 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Table of Contents Table of Contents Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1 LED Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.3 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5 Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Datasheet 4 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 List of Figures List of Figures Figure1-1 Pin configuration and typical application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure3-1 Total Power Dissipation P = f(T ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 tot S Figure3-2 Permissible Pulse Load R = f(t ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 thJS p Figure3-3 Permissible Pulse Load P / P = f(t ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 totmax totDC p Figure3-4 BCR 320U: Output Current versus V I = f(V ), V = 12 V, R = Parameter . . . . . . . . . . . . 13 out out out EN ext Figure3-5 BCR 320U: Output Current versus R I = f(R ), V = 12 V, V = Parameter . . . . . . . . . . . . 13 ext out ext EN out Figure3-6 BCR 320U: Output Current versus V I = f(V ), V = 12 V, R = open, T = Parameter . . . 14 out out out EN ext A Figure3-7 BCR 320U: Output Current versus V I = f(V ), V = 12 V, R = 20 Ω, T = Parameter. . . . 14 out out out EN ext A Figure3-8 BCR 320U: Output Current versus V I = f(V ), V = 12 V, R = 3 Ω, T = Parameter. . . . . 15 out out out EN ext A Figure3-9 BCR 320U: Output Current versus V I = f(V ), V = 2 V, R = open, T = Parameter . . . . 15 EN out EN out ext A Figure3-10 BCR 320U: Output Current versus V I = f(V ), V = 2 V, R = 20 Ω, T = Parameter. . . . . 16 EN out EN out ext A Figure3-11 BCR 320U: Output Current versus V I = f(V ), V = 2 V, R = 3 Ω, T = Parameter. . . . . . 16 EN out EN out ext A Figure3-12 BCR 320U: Output Current versus V I = f(V ), V = 2 V, R = Parameter . . . . . . . . . . . . . 17 EN out EN out ext Figure3-13 BCR 320U: Enable Current versus V I = f(V ), R = open, I = 0 A, T = Parameter. . . . . 17 EN EN EN ext out A Figure3-14 BCR 321U: Output Current versus V I = f(V ), V = 3.3 V, R = Parameter. . . . . . . . . . . . 18 out out out EN ext Figure3-15 BCR 321U: Output Current versus R I = f(R ), V = 3.3 V, V = Parameter. . . . . . . . . . . . 18 ext out ext EN out Figure3-16 BCR 321U: Output Current versus V I = f(V ), V = 3.3 V, R = open, T = Parameter. . . 19 out out out EN ext A Figure3-17 BCR 321U: Output Current versus V I = f(V ), V = 3.3 V, R = 20 Ω, T = Parameter . . . 19 out out out EN ext A Figure3-18 BCR 321U: Output Current versus V I = f(V ), V = 3.3 V, R = 3 Ω, T = Parameter . . . . 20 out out out EN ext A Figure3-19 BCR 321U: Output Current versus V I = f(V ), V = 2 V, R = open, T = Parameter . . . . 20 EN out EN out ext A Figure3-20 BCR 321U: Output Current versus V I = f(V ), V = 2 V, R = 20 Ω, T = Parameter. . . . . 21 EN out EN out ext A Figure3-21 BCR 321U: Output Current versus V I = f(V ), V = 2 V, R = 3 Ω, T = Parameter. . . . . . 21 EN out EN out ext A Figure3-22 BCR 321U: Output Current versus V I = f(V ), V = 2 V, R = Parameter . . . . . . . . . . . . . 22 EN out EN out ext Figure3-23 BCR 321U: Enable Current versus V I = f(V ), R = open, I = 0 A, T = Parameter. . . . . 22 EN EN EN ext out A Figure4-1 Application Circuit: Enabling / PWM by Micro Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Figure4-2 Application Circuit: Enabling by Connecting to V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 S Figure5-1 Package Outline for SC74 (dimensions in mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure5-2 Package Footprint for SC74 (dimensions in mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure5-3 Tape and Reel Information for SC74 (dimensions in mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Datasheet 5 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 List of Tables List of Tables Table2-1 Maximum Ratings at T =25°C, unless otherwise specified . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 A Table2-2 Thermal Resistance at T =25°C, unless otherwise specified. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 A Table2-3 Electrical Characteristics at T =25°C, unless otherwise specified . . . . . . . . . . . . . . . . . . . . . . . . 9 A Table2-4 DC Characteristics with stabilized LED load at T =25°C, unless otherwise specified . . . . . . . . 10 A Datasheet 6 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 LED Driver 1 LED Driver 1.1 Features • LED drive current preset to 10 mA • Continuous output current up to 250mA with an external resistor • Easy paralleling of drivers to increase current • Supply voltage up to 25V • Low side current control SC74-3D • Digital PWM input up to 10kHz frequency (BCR 321U E6327) • Up to 1W power dissipation in a small SC74 package • Negative thermal coefficient of -0.2 %/K reduces output current at higher temperatures • RoHS compliant (Pb-free) package • Automotive qualified according AEC Q101 1.2 Applications • Architectural LED lighting • Channel letters for advertising, LED strips for decorative lighting • Retail lighting in fridge, freezer case and vending machines • Emergency lighting (e.g. steps lighting, exit way signs etc.) 1.3 General Description The BCR 320U E6327 / BCR 321U E6327 provides a low-cost solution for driving 0.5W LEDs with a typical LED current of 150mA to 200mA. Internal breakdown voltage is higher than 16V which is the maximum voltage the LED driver can sustain when the output is directly connected to supply voltage. The BCR 320U E6327 / BCR 321U E6327 can be operated with a supply voltage of more than 16V considering the voltage drop of the LED load which reduces the output voltage to the maximum rating of the driver. The enable pin of BCR 320U E6327 can withstand a maximum voltage of 25V which can be increased adding a series resistor in front of the enable pin reducing the voltage at the enable pin below 25V. The digital input pin of BCR 321U E6327 allows dimming via a micro controller with frequencies up to 10kHz. A reduction of the output current at higher temperatures is the result of the negative temperature coefficient of - 0.2%/K of the LED driver. With no need for additional external components like inductors, capacitors and free wheeling diodes, the BCR 320U E6327 / BCR 321U E6327 LED drivers are a cost-efficient and PCB-area saving solution for driving 0.5W LEDs. Datasheet 7 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 LED Driver Pin Configuration Typical Application +V S EN 1 6 R ext I I EN out EN 1 OUT 2,3,5 OUT 2 5 OUT OUT 3 4 GND Rext 6 R ext V (optional) drop GND 4 BCR 320U E6327 Figure1-1 Pin configuration and typical application Sales Name Marking Pin Configuration Package BCR 320U E6327 30 1=EN 2; 3; 5=OUT 4=GND 6=R SC74 ext BCR 321U E6327 31 1=EN 2; 3; 5=OUT 4=GND 6=R SC74 ext Datasheet 8 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Electrical Characteristics 2 Electrical Characteristics Table2-1 Maximum Ratings at T =25°C, unless otherwise specified A Parameter Symbol Values Unit Note / TestCondition Min. Typ. Max. Enable voltage V V EN BCR 320U E6327 - - 25 BCR 321U E6327 - - 4.5 Output current I - - 300 mA out Output voltage V - - 16 V out Reverse voltage between all terminals V - - 0.5 V R Total power dissipation P - - 1000 mW T ≤100°C tot S Junction temperature T - - 150 °C J Storage temperature range T -65 - 150 °C STG Attention:Stresses above the max. values listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Maximum ratings are absolute ratings; exceeding only one of these values may cause irreversible damage to the integrated circuit. Table2-2 Thermal Resistance at T =25°C, unless otherwise specified A Parameter Symbol Values Unit Note / TestCondition Min. Typ. Max. Junction - soldering point1) R - - 50 K/W thJS 1) For calculation of R please refer to Application Note AN077 (Thermal Resistance Calculation) thJA Table2-3 Electrical Characteristics at T =25°C, unless otherwise specified A Parameter Symbol Values Unit Note / TestCondition Min. Typ. Max. Collector-emitter breakdown voltage V 16 - - V I =1mA, I =0 BR(CEO) C B Enable current I mA EN BCR 320U E6327 - 1.2 - V =12V EN BCR 321U E6327 - 1.2 - V =3.3V EN DC current gain h 200 350 500 - I =50mA, V =1V FE C CE Internal resistor R 85 95 105 Ω I =10mA int Rint Bias resistor R kΩ B BCR 320U E6327 - 10 - BCR 321U E6327 - 1.5 - Datasheet 9 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Electrical Characteristics Table2-3 Electrical Characteristics at T =25°C, unless otherwise specified (cont’d) A Parameter Symbol Values Unit Note / TestCondition Min. Typ. Max. Output current I mA V =1.4V out out BCR 320U E6327 9 10 11 V =12V EN BCR 321U E6327 9 10 11 V =3.3V EN Output current at R =3Ω V >1.4V ext out BCR 320U E6327 - 250 - V =12V EN BCR 321U E6327 - 250 - V =3.3V EN Voltage drop (V ) V 0.85 0.95 1.05 V I =10mA Rext drop out Table2-4 DC Characteristics with stabilized LED load at T =25°C, unless otherwise specified A Parameter Symbol Values Unit Note / TestCondition Min. Typ. Max. Lowest sufficient supply voltage overhead V - 1.4 - V I >18mA Smin out Output current change versusT ∆I /I %/K V >2.0V A out out out BCR 320U E6327 - -0.2 - V =12V EN BCR 321U E6327 - -0.2 - V =3.3V EN Output current change versus V ∆I /I %/V V >2.0V S out out out BCR 320U E6327 - 1 - V =12V EN BCR 321U E6327 - 1 - V =3.3V EN Datasheet 10 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Typical characteristics 3 Typical characteristics 1200 1000 800 ] W m 600 [ ot Pt 400 200 0 0 20 40 60 80 100 120 140 T [°C] S Figure3-1 Total Power Dissipation P = f(T ) tot S 100 10 ] W / K [ S D = 0 J h D = 0.005 Rt 1 D = 0.01 D = 0.02 D = 0.05 D = 0.1 D = 0.2 D = 0.5 0.1 -6 -5 -4 -3 -2 -1 0 10 10 10 10 10 10 10 t [s] p Figure3-2 Permissible Pulse Load R = f(t ) thJS p Datasheet 11 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Typical characteristics 1000 D = 0 D = 0.005 D = 0.01 D = 0.02 D = 0.05 100 D = 0.1 C D D = 0.2 ot Pt D = 0.5 / x a m Ptot 10 1 -6 -5 -4 -3 -2 -1 0 10 10 10 10 10 10 10 t [s] p Figure3-3 Permissible Pulse Load P / P = f(t ) totmax totDC p Datasheet 12 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Typical characteristics 0.3 R = 3 Ω ext R = 4 Ω ext 0.2 ] A R = 6 Ω [ ext ut o I R = 10 Ω 0.1 ext R = 20 Ω ext R = open ext 0 0 1 2 3 4 5 6 7 8 9 10 11 12 V [V] out Figure3-4 BCR 320U: Output Current versus V I = f(V ), V = 12 V, R = Parameter out out out EN ext 0.35 0.3 0.25 0.2 ] A [ ut o 0.15 I 0.1 0.05 V = 1.4 V out V = 5.4 V out 0 1 10 100 R [Ω ] ext Figure3-5 BCR 320U: Output Current versus R I = f(R ), V = 12 V, V = Parameter ext out ext EN out Datasheet 13 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Typical characteristics 0.015 0.01 ] A [ ut o I 0.005 -40 °C 25 °C 85 °C 0 0 2 4 6 8 10 12 V [V] out Figure3-6 BCR 320U: Output Current versus V I = f(V ), V = 12 V, R = open, T = Parameter out out out EN ext A 0.06 0.05 0.04 ] A [ 0.03 ut o I 0.02 0.01 -40 °C 25 °C 85 °C 0 0 2 4 6 8 10 12 V [V] out Figure3-7 BCR 320U: Output Current versus V I = f(V ), V = 12 V, R = 20 Ω, T = Parameter out out out EN ext A Datasheet 14 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Typical characteristics 0.3 0.2 ] A [ ut o I 0.1 -40 °C 25 °C 85 °C 0 0 2 4 6 8 10 12 V [V] out Figure3-8 BCR 320U: Output Current versus V I = f(V ), V = 12 V, R = 3 Ω, T = Parameter out out out EN ext A 0.015 0.01 ] A [ ut o I 0.005 -40 °C 25 °C 85 °C 0 0 5 10 15 20 25 V [V] EN Figure3-9 BCR 320U: Output Current versus V I = f(V ), V = 2 V, R = open, T = Parameter EN out EN out ext A Datasheet 15 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Typical characteristics 0.06 0.05 0.04 ] A [ 0.03 ut o I 0.02 0.01 -40 °C 25 °C 85 °C 0 0 5 10 15 20 25 V [V] EN Figure3-10 BCR 320U: Output Current versus V I = f(V ), V = 2 V, R = 20 Ω, T = Parameter EN out EN out ext A 0.3 0.2 ] A [ ut o I 0.1 -40 °C 25 °C 85 °C 0 0 5 10 15 20 25 V [V] EN Figure3-11 BCR 320U: Output Current versus V I = f(V ), V = 2 V, R = 3 Ω, T = Parameter EN out EN out ext A Datasheet 16 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Typical characteristics 0.3 R = open ext R = 20 Ω ext R = 10 Ω ext R = 6 Ω ext R = 4 Ω ext 0.2 R = 3 Ω ext ] A [ ut o I 0.1 0 0 5 10 15 20 25 V [V] EN Figure3-12 BCR 320U: Output Current versus V I = f(V ), V = 2 V, R = Parameter EN out EN out ext 3 2.5 2 ] A m 1.5 [ N E I 1 0.5 -40 °C 25 °C 80 °C 0 0 5 10 15 20 25 V [V] EN Figure3-13 BCR 320U: Enable Current versus V I = f(V ), R = open, I = 0 A, T = Parameter EN EN EN ext out A Datasheet 17 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Typical characteristics 0.3 R = 3 Ω ext R = 4 Ω 0.2 ext ] A R = 6 Ω [ ext ut o I R = 10 Ω 0.1 ext R = 20 Ω ext R = open ext 0 0 1 2 3 4 5 6 7 8 9 10 11 12 V [V] out Figure3-14 BCR 321U: Output Current versus V I = f(V ), V = 3.3 V, R = Parameter out out out EN ext 0.35 0.3 0.25 0.2 ] A [ ut o 0.15 I 0.1 0.05 V = 1.4 V out V = 5.4 V out 0 1 10 100 R [Ω ] ext Figure3-15 BCR 321U: Output Current versus R I = f(R ), V = 3.3 V, V = Parameter ext out ext EN out Datasheet 18 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Typical characteristics 0.015 0.01 ] A [ ut o I 0.005 -40 °C 25 °C 85 °C 0 0 2 4 6 8 10 12 V [V] out Figure3-16 BCR 321U: Output Current versus V I = f(V ), V = 3.3 V, R = open, T = Parameter out out out EN ext A 0.06 0.05 0.04 ] A [ 0.03 ut o I 0.02 0.01 -40 °C 25 °C 85 °C 0 0 2 4 6 8 10 12 V [V] out Figure3-17 BCR 321U: Output Current versus V I = f(V ), V = 3.3 V, R = 20 Ω, T = Parameter out out out EN ext A Datasheet 19 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Typical characteristics 0.3 0.2 ] A [ ut o I 0.1 -40 °C 25 °C 85 °C 0 0 2 4 6 8 10 12 V [V] out Figure3-18 BCR 321U: Output Current versus V I = f(V ), V = 3.3 V, R = 3 Ω, T = Parameter out out out EN ext A 0.015 0.01 ] A [ ut o I 0.005 -40 °C 25 °C 85 °C 0 0 1 2 3 4 5 V [V] EN Figure3-19 BCR 321U: Output Current versus V I = f(V ), V = 2 V, R = open, T = Parameter EN out EN out ext A Datasheet 20 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Typical characteristics 0.06 0.05 0.04 ] A [ 0.03 ut o I 0.02 0.01 -40 °C 25 °C 85 °C 0 0 1 2 3 4 5 V [V] EN Figure3-20 BCR 321U: Output Current versus V I = f(V ), V = 2 V, R = 20 Ω, T = Parameter EN out EN out ext A 0.3 0.2 ] A [ ut o I 0.1 -40 °C 25 °C 85 °C 0 0 1 2 3 4 5 V [V] EN Figure3-21 BCR 321U: Output Current versus V I = f(V ), V = 2 V, R = 3 Ω, T = Parameter EN out EN out ext A Datasheet 21 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Typical characteristics 0.3 R = open ext R = 20 Ω ext R = 10 Ω ext R = 6 Ω ext R = 4 Ω ext 0.2 R = 3 Ω ext ] A [ ut o I 0.1 0 0 1 2 3 4 5 6 V [V] EN Figure3-22 BCR 321U: Output Current versus V I = f(V ), V = 2 V, R = Parameter EN out EN out ext 4 3 ] A m 2 [ N E I 1 -40 °C 25 °C 80 °C 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 V [V] EN Figure3-23 BCR 321U: Enable Current versus V I = f(V ), R = open, I = 0 A, T = Parameter EN EN EN ext out A Datasheet 22 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Application hints 4 Application hints +V S µC I I EN out EN 1 OUT 2,3,5 R ext 6 R ext V (optional) drop GND 4 BCR 321U E6327 Figure4-1 Application Circuit: Enabling / PWM by Micro Controller +V S I I EN out EN 1 OUT 2,3,5 R ext 6 R ext V (optional) drop GND 4 BCR 320U E6327 Figure4-2 Application Circuit: Enabling by Connecting to V S Application hints BCR 320U E6327 / BCR 321U E6327 serve as an easy to use constant current sources for LEDs. In stand alone application an external resistor can be connected to adjust the current from 10mA to 250mA. R can be ext determined by using Figure3-5 or Figure3-15. Connecting a low tolerance resistor R will improve the overall ext accuracy of the current sense resistance formed by the parallel connection of R and R leading to an improved int ext current accuracy. Please take into account that the resulting output currents will be slightly lower due to the self heating of the component and the negative thermal coefficient. Please visit our web site www.infineon.com/lowcostleddriver for application notes and for up-to-date application information. Datasheet 23 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Package 5 Package 2.9±0.2 B 1.1 MAX. (2.25) (0.35) 0.15-+00..016 6 5 4 ±0.1 ±0.1 ±0.1 5 5 6 1 2 3 2. 0.2 1. 0.35+0.1 A Pin 1 -0.05 0.2M B 6x 0.1 MAX. marking 0.95 0.2M A 1.9 SC74-PO V04 Figure5-1 Package Outline for SC74 (dimensions in mm) 0.5 9 9 1. 2. 0.95 SC74-FPR V04 Figure5-2 Package Footprint for SC74 (dimensions in mm) 4 0.2 8 7 2. Pin 1 3.15 1.15 marking SC74-TP Figure5-3 Tape and Reel Information for SC74 (dimensions in mm) Datasheet 24 Revision 2.1, 2015-01-28

BCR 320U E6327 / BCR 321U E6327 Terminology Terminology ∆I /I Output current change out out h DC current gain FE I Enable current EN I Output current out I Reverse current R LED Light Emitting Diode PCB Printed Circuit Board P Total power dissipation tot PWM Pulse Width Modulation R Bias resistor B R External resistor ext R Internal resistor int RoHs Restriction of Hazardous Substance directive R Thermal resistance junction to soldering point thJS T Ambient temperature A T Junction temperature J T Soldering point temperature S T Storage temperature stg V Collector-emitter breakdown voltage BR(CEO) V Breakdown voltage BR V Voltage drop drop V Enable voltage EN V Output voltage out V Reverse voltage R V Supply voltage S V Lowest sufficient supply voltage overhead Smin Datasheet 25 Revision 2.1, 2015-01-28

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