LED Driver BCR 40U E6327 Datasheet Revision 2., 205-0-28 Power Management & Multimarket
Edition 205-0-28 Published by Infineon Technologies AG 8726 Munich, Germany 205 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.
Revision History Page or Item Subjects (major changes since previous revision) Revision 2., 205-0-28 All Using full sales name BCR 40U E6327 instead of short form BCR40U Page 7 Halogen free logo removed Trademarks of Infineon Technologies AG AURIX, C66, 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, SOLID FLASH, 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. TAIYO YUDEN 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 20-- Datasheet 3 Revision 2., 205-0-28
Table of Contents Table of Contents Table of Contents................................................................ 4 List of Figures................................................................... 5 List of Tables.................................................................... 6 LED Driver...................................................................... 7. Features........................................................................ 7.2 Applications..................................................................... 7.3 General Description............................................................... 7 2 Electrical Characteristics.......................................................... 9 3 Typical characteristics........................................................... 0 4 Application hints................................................................ 6 5 Package....................................................................... 7 Terminology................................................................... 8 Datasheet 4 Revision 2., 205-0-28
List of Figures List of Figures Figure - Pin configuration and typical application.............................................. 8 Figure 3- Total Power Dissipation P tot = f(t S )................................................. 0 Figure 3-2 Permissible Pulse Load R thjs = f(t p )................................................ 0 Figure 3-3 Permissible Pulse Load P totmax / P totdc = f(t p ).......................................... Figure 3-4 Output Current versus V S I out = f(v S ), V S - V out =.4 V, R ext = Parameter.................... 2 Figure 3-5 Supply Current versus V S I S = f(v S ), T A = Parameter................................... 2 Figure 3-6 Output Current versus V S I out = f(v S ), V S - V out = Parameter.............................. 3 Figure 3-7 Output Current versus V S I out = f(v S ), V S - V out =.4 V, T A = Parameter..................... 3 Figure 3-8 Output Current versus R ext I out = f(r ext ), V S = 0 V, V S - V out =.4 V, T A = Parameter.......... 4 Figure 3-9 Output Current versus T S I out = f(t S ), V S = 0 V, V S - V out =.4 V, R ext = Parameter........... 4 Figure 3-0 Reference Voltage V drop versus I out V drop = f(i out ), I out = 0 µa to 0 ma..................... 5 Figure 3- Reference Voltage V drop versus I out V drop = f(i out ), I out = 0 ma to 65 ma..................... 5 Figure 4- Application Circuit: Stand alone current source....................................... 6 Figure 4-2 Application Circuit: Boost mode current source with external power transistor............... 6 Figure 5- Package Outline for SC74 (dimensions in mm)....................................... 7 Figure 5-2 Package Footprint for SC74 (dimensions in mm)...................................... 7 Figure 5-3 Tape and Reel Information for SC74 (dimensions in mm)............................... 7 Datasheet 5 Revision 2., 205-0-28
List of Tables List of Tables Table 2- Maximum Ratings at T A = 25 C, unless otherwise specified............................. 9 Table 2-2 Thermal Resistance at T A = 25 C, unless otherwise specified............................ 9 Table 2-3 Electrical Characteristics at T A = 25 C, unless otherwise specified........................ 9 Table 2-4 DC Characteristics with stabilized LED load at T A = 25 C, unless otherwise specified......... 9 Datasheet 6 Revision 2., 205-0-28
LED Driver LED Driver. Features LED drive current preset to 0 ma Output current adjustable up to 65 ma with an external resistor Easy paralleling of drivers to increase current Supply voltage up to 40 V High current accuracy at supply voltage variation Low voltage overhead of.4 V Up to 750 mw 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 Q0 SC74-3D.2 Applications Channel letters for advertising, LED strips for decorative lighting Aircraft, train, ship illumination Retrofits for general lighting, white goods like refrigerator lighting Medical lighting Automotive applications like CHMSL and rear combination lights.3 General Description The BCR 40U E6327 is a cost efficient LED driver to drive low power LEDs. The advantages towards resistor biasing are: homogenous light output despite varying forward voltages in different LED strings homogenous light output of LEDs despite voltage drop across long supply lines homogenous light output independent from supply voltage variations longer lifetime of the LEDs due to reduced output current at higher temperatures (negative thermal coefficient) The advantages towards discrete solutions are: lower assembly cost smaller form factor higher reliability due to less soldering joints higher output current accuracy due to pretested LED drivers Dimming is possible by using an external digital transistor at the ground pin. The BCR 40U E6327 can be operated at higher supply voltages by putting LEDs between the supply voltage V S and the power supply pin of the LED driver. You can find further details in our application notes. The BCR 40U E6327 is a perfect fit for numerous low power LED applications by combining small form factor with low cost. These LED drivers offer several advantages to resistors like significantly higher current control at very low voltage drop ensuring high lifetime of the LEDs. Datasheet 7 Revision 2., 205-0-28
LED Driver Pin Configuration Typical Application 4 +V S V S 6 R ext (optional ) V drop GND 6 R ext R ext OUT 2 5 OUT GND OUT 2,3,5 OUT 3 4 V S I S I out Figure - Pin configuration and typical application Sales Name Marking Pin Configuration Package BCR 40U E6327 Ls = GND 2; 3; 5 = OUT 4 = V S 6=R ext SC74 Datasheet 8 Revision 2., 205-0-28
Electrical Characteristics 2 Electrical Characteristics Table 2- Maximum Ratings at T A = 25 C, unless otherwise specified Parameter Symbol Values Unit Note / Test Condition Min. Typ. Max. Supply voltage V S - - 40 V Output current I out - - 65 ma Output voltage V out - - 40 V Reverse voltage between all terminals V R - - 0.5 V Total power dissipation P tot - - 750 mw T S 2.5 C Junction temperature T J - - 50 C Storage temperature range T STG -65-50 C 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. Table 2-2 Thermal Resistance at T A = 25 C, unless otherwise specified Parameter Symbol Values Unit Note / Test Condition Min. Typ. Max. Junction - soldering point ) R thjs - - 50 K/W ) For calculation of R thja please refer to Application Note AN077 (Thermal Resistance Calculation) Table 2-3 Electrical Characteristics at T A = 25 C, unless otherwise specified Parameter Symbol Values Unit Note / Test Condition Min. Typ. Max. Collector-emitter breakdown voltage V BR(CEO) 40 - - V I C =ma, I B =0 Supply current I S 340 420 500 µa V S =0V DC current gain h FE 00 220 470 - I C =50mA, V CE =V Internal resistor R int 78 9 04 Ω I Rint =0mA Output current I out 9 0 ma V S =0V V out =8.6V Voltage drop (V Rext ) V drop 0.82 0.9 V I out =0mA Table 2-4 DC Characteristics with stabilized LED load at T A = 25 C, unless otherwise specified Parameter Symbol Values Unit Note / Test Condition Min. Typ. Max. Lowest sufficient supply voltage overhead V Smin -.4 - V I out >8mA Output current change versust A I out /I out - -0.2 - %/K V S =0V Output current change versus V S I out /I out - - %/V V S =0V Datasheet 9 Revision 2., 205-0-28
Typical characteristics 3 Typical characteristics 000 800 P tot [mw] 600 400 200 0 0 20 40 60 80 00 20 40 T S [ C] Figure 3- Total Power Dissipation P tot = f(t S ) 00 R thjs [K/W] 0 D = 0 D = 0.005 D = 0.0 D = 0.02 D = 0.05 D = 0. D = 0.2 D = 0.5 0. 0-6 0-5 0-4 0-3 0-2 0-0 0 t p [s] Figure 3-2 Permissible Pulse Load R thjs = f(t p ) Datasheet 0 Revision 2., 205-0-28
Typical characteristics P totmax / P totdc 000 00 0 D = 0 D = 0.005 D = 0.0 D = 0.02 D = 0.05 D = 0. D = 0.2 D = 0.5 0-6 0-5 0-4 0-3 0-2 0-0 0 t p [s] Figure 3-3 Permissible Pulse Load P totmax / P totdc = f(t p ) Datasheet Revision 2., 205-0-28
Typical characteristics 00 I OUT [ma] 0 R EXT = open R EXT = 00 Ω R EXT = 47 Ω R EXT = 33 Ω R EXT = 22 Ω R EXT = 8 Ω R EXT = 5 Ω 0 5 0 5 20 25 30 35 40 V S [V] Figure 3-4 Output Current versus V S I out = f(v S ), V S - V out =.4 V, R ext = Parameter 2.8.6.4 I S [ma].2 0.8 0.6 0.4 0.2 0 80 C 20 C -40 C 0 5 0 5 20 25 30 35 40 V S [V] Figure 3-5 Supply Current versus V S I S = f(v S ), T A = Parameter Datasheet 2 Revision 2., 205-0-28
Typical characteristics 2.5 0.5 I out [ma] 0 9.5 9 8.5 8 7.5 7 V.4-2 V 0 5 0 5 20 25 30 35 40 V S [V] Figure 3-6 Output Current versus V S I out = f(v S ), V S - V out = Parameter 00 I out [ma] 0-40 C 25 C 85 C 50 C 0 5 0 5 20 25 30 35 40 V S [V] Figure 3-7 Output Current versus V S I out = f(v S ), V S - V out =.4 V, T A = Parameter Datasheet 3 Revision 2., 205-0-28
Typical characteristics 00-40 C 25 C 85 C 50 C I out [ma] 0 0 00 R ext [Ω] Figure 3-8 Output Current versus R ext I out = f(r ext ), V S = 0 V, V S - V out =.4 V, T A = Parameter I out [ma] 70 60 50 40 30 20 0 R ext = 5 Ω R ext = 8 Ω R ext = 22 Ω R ext = 33 Ω R ext = 47 Ω R ext = 00Ω R ext = open 0-50 -25 0 25 50 75 00 25 50 T S [ C] Figure 3-9 Output Current versus T S I out = f(t S ), V S = 0 V, V S - V out =.4 V, R ext = Parameter Datasheet 4 Revision 2., 205-0-28
Typical characteristics..05 V drop [V] 0.95 0.9 0.85 typ. min., max. 0.8 0-5 0-4 0-3 0-2 I OUT [A] Figure 3-0 Reference Voltage V drop versus I out V drop = f(i out ), I out = 0 µa to 0 ma 0.95 0.9 V drop [V] 0.85 0.8 0.75 0.7 0.65 typ. min., max. 0.6 0 20 30 40 50 60 70 I OUT [ma] Figure 3- Reference Voltage V drop versus I out V drop = f(i out ), I out = 0 ma to 65 ma Datasheet 5 Revision 2., 205-0-28
Application hints 4 Application hints 4 +V S V S 6 R ext (optional ) V drop R ext GND OUT 2,3,5 I S I out Figure 4- Application Circuit: Stand alone current source 4 +V S V S 6 R ext (optional ) V drop R ext I LED GND OUT 2,3,5 I out R I S R 2 Figure 4-2 Application Circuit: Boost mode current source with external power transistor Application hints BCR 40U E6327 serves as an easy to use constant current source for LEDs. In stand alone application an external resistor R ext can be connected to adjust the current between 0 ma and 65 ma. R ext can be determined by using Figure 3-8. Connecting a low tolerance resistor R ext will improve the overall accuracy of the current sense resistance formed by the parallel connection of R int and R ext leading to an improved 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. In boost mode configuration the LED current can be extended to drive high power LEDs. Please visit our web site www.infineon.com/lowcostleddriver for detailed application notes. Datasheet 6 Revision 2., 205-0-28
Package 5 Package 2.9 ±0.2 (2.25) B (0.35) +0. 0.5-0.06. MAX. 6 5 4 ±0. ±0. ±0. Pin marking 2.9 3 +0. 0.35-0.05 0.95 0.2 M B 6x 2.5 0.25 0.2 M 0. MAX. A.6 A SC74-PO V04 Figure 5- Package Outline for SC74 (dimensions in mm) 0.5.9 2.9 0.95 SC74-FPR V04 Figure 5-2 Package Footprint for SC74 (dimensions in mm) 4 0.2 2.7 8 Pin marking 3.5.5 SC74-TP Figure 5-3 Tape and Reel Information for SC74 (dimensions in mm) Datasheet 7 Revision 2., 205-0-28
Terminology Terminology I out /I out h FE I EN I LED I out I R LED PCB P tot PWM R B R ext R int RoHs R thjs T A T J T S T stg V BR(CEO) V BR V drop V out V R V S V Smin Output current change DC current gain Enable current LED current Output current Reverse current Light Emitting Diode Printed Circuit Board Total power dissipation Pulse Width Modulation Bias resistor External resistor Internal resistor Restriction of Hazardous Substance directive Thermal resistance junction to soldering point Ambient temperature Junction temperature Soldering point temperature Storage temperature Collector-emitter breakdown voltage Breakdown voltage Voltage drop Output voltage Reverse voltage Supply voltage Lowest sufficient supply voltage overhead Datasheet 8 Revision 2., 205-0-28
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