Datasheet, Rev. 3.1, Feb. 2013 LED Driver IC BCR450 Power Management and Multimarket Edition 2013-02-21 Published by Infineon Technologies AG, 81726 Munchen, Germany (c) Infineon Technologies AG 2013. All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as a guarantee of characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein. Information For further information on technology, delivery terms and conditions and prices please contact your 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 your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems 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. BCR450 LED Driver IC BCR450, LED Driver IC Revision History: 2013-02-21, Rev. 3.1 Previous Version: 2009-10-15, Rev. 3.0 Page Subjects (major changes since last revision) Figure 1 Block diagram: Pin 3 (EN), ESD protection and base resistor added Table 5 Note 1) added to Enable voltage range Table 6 Typical input capacitance of pin 3 (EN) added Figure 5 Units added to figure title Figure 6 Units added to figure title Datasheet 3 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC BCR450 Power LED Driver IC 1 BCR450 Power LED Driver IC Features * Low voltage drop across sense resistor, 0.15 V typical * High output current precision * Operating voltage fro 8 to 27 V * Over voltage protection * Overtemperature current foldback and Thermal shut down function * Adjustable Constant LED Current up to 85 mA in stand alone operation * Precise Internal bandgap enables High output current accuracy * Up to 2.5 A LED current possible by using external transistor * EN Input for PWM LED brightness control and On/Off control * Very Low Standby Current * Minimum number of external components required, no inductors * Very small SC-74 package: 2.9 mm x 2.5 mm x 1.1 mm 4 3 5 2 6 1 Typical 12V High Power LED Application Vs Benefits * High level of colour control due to high output current precision * Small space requirement * No electro- magnetic interference * Active thermal monitoring of chip and LED temperature with current fold- back to avoid thermal overstress * Low cost device * Scalable output stage optimizing cost and space 350mA 6 3 BCR450 4 1 2,5 BCX68-25 Typical Applications * General lighting e.g. retrofits * Architectural lighting, Medical and Dental lighting * Transportation like train and aircraft lighting * Strobe lighting * Universal constant current source * Signal and marker lights for orientation or navigation * LED controller for industrial applications, not qualified to AECQ100 2 Description The BCR450 is a LED driver IC optimized for usage with an external power transistor for driving LEDs above 100 mA. For currents up to 85 mA the BCR450 can be used in stand alone operation. The output current level can be adjusted with an external sense resistor. The IC can be switched on and off by an external signal, which is also suitable to regulate brightness of the LEDs by PWM dimming. The precise internal bandgap stabilizes the circuit and provides stable current conditions over temperature range. Additional features are included to protect the LEDs from overload, short circuit events as well as from over voltage. The LEDs can be also protected against thermal overload by thermally coupling the LEDs to the BCR450. Datasheet 4 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC Description LED Controller BCR450 Iout 1 GND 2 Output stage EN Vref OP 6 Vs 5 GND Bandgap 4 Vsense 3 BCR450_ Block diagram.vsd Figure 1 Block diagram Pin Definition Table 1 Pin definition and function Pin number Pin Symbol Function 1 Iout Controlled output current to drive LEDs 2 GND IC ground 3 EN Power On control voltage pin (PWM input) 4 Vsense Sense control voltage pin for internal feedback mechanism 5 GND IC ground 6 Vs Supply voltage Table 2 Marking Type Marking Package BCR450 50s SC74 Datasheet 5 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC Description AC Measurement S1 = S2 ~ 150 mV S3 Source 4 Vs Vsense - S4 S5 = = S6 5V= Source 2 S9 Vref R1 EN = Source 1 IOut + Source 5 PWM S8 S7 Source 3 = GND R2 Vout BCR450_Test circuit.vsd Figure 2 Electrical test circuit Thermal resistance Table 3 Thermal resistance Parameter Symbol Value Unit Junction - solder point RthJS 75 K/W Absolute Maximum Ratings Table 4 Absolute Maximum ratings Parameter Symbol Limit Value Unit Supply voltage 40 V Sense Voltage Vs Vsense 200 mV Output current Iout 100 mA Total Power Dissipation; Ts= 112.5C Ptot TJ TSTG VESD_HBM 500 mW 150 C -65... 150 C 2000 V Junction temperature Storage temperature range ESD capability Human Body Model 1) 1) For ESD testing, the chip was mounted in a SC74 package on an application board, where GND is electrically connected to the chip GND Datasheet 6 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC Electrical Characteristics 3 Electrical Characteristics 3.1 DC Characteristics 8 V < VS < 27 V; - 40 C < TJ < 150 C, all voltages with respect to ground; current directions as given in Figure 2; unless otherwise specified All parameters are tested at 25 C, unless otherwise specified Table 5 DC Characteristics Parameter Symbol Values Min. Typ. 70 90 Unit Note / Test Condition mA Is short; Vs = 8..27 V Vsense = 20 mV Is short; Vs = 42 V Vsense = 20 mV Max. Overall current consumption Isshort Overall current consumption Isshort 600 A Overall standby current consumption Isstandby 200 nA EN = 0 V; Vs= 8..27 V Vsense = 20 mV Current of enable input IEN Iouthigh A Current of driver output Current of driver output Ioutlow 100 nA Current of Sense input Isense Vout 200 nA Vsense = 0..200 mV Vsense = 20 mV; Vs = 8 V Vsense = 200 mV; Vs = 8V Vsense = 20..200 mV Iout = 15 mA; Voltage of Driver output 20 40 70 90 70 mA 6 V S1, S6, S8, S9 = on; R1 = 390 ; R2 = 10 ; see Figure 2 Voltage of Sense input Vsense 135 150 165 mV Iout = 15 mA; Vs = 8..27 V S3, S6, S8 = on; R1 = 390 ;R2 = 10 TJ = 115 C see Figure 2 Enable voltage range Control voltage for power on Control voltage for power off Over voltage Protection Delta sense voltage Drop Voltage Temperature shut down UPon UOn UOff Vs, OV Vsense Vs - Vout TSD -0.3 0.6 0.85 -0.3 51) V 5 V 0.35 V 27 V 2 10 50 1.2 130 150 mV V 170 C Iout -> 0 A Iout: 0 -> 50 mA Iout < 40 mA Iout -> 0 A; refer to TJ 1) ESD protection diode of pin 3 (EN) will breakdown above 5 V input voltage to GND Datasheet 7 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC Electrical Characteristics 3.2 Digital Signals All parameters are tested at 25 C, unless otherwise specified Table 6 Digital Control Parameter (EN) Parameter Symbol PWM signal frequency fPWM Values Min. Typ. Unit Note / Test Condition Hz tdutycycle = 1%; Max. 1000 signal level reaches 100% in on and off mode PWM Duty cycle tdutyPWM PWM voltage UPWM EN input capacitance to GND CEN 3.3 5 % 5 130 F = 5 kHz; signal level reaches 100% in on and off mode V pF EN = 0 V Transient Parameters 8 V < VS < 27 V; - 40 C < TJ < 150 C, all voltages with respect to ground; current directions as given in Figure 2; unless otherwise specified All parameters are tested at 25 C, unless otherwise specified Table 7 Digital Control Parameter (EN) Parameter Symbol Values Min. Response Time Datasheet Typ. Unit Note / Test Condition Max. TON 10 s EN: 0 -> 5 V @ trise < 20 ns trisetime @(10...90%) * Vsense (Iout ~ 15 mA);Rsense = 10 TOFF 70 s EN: 5 V -> 0 @ tfall < 20 ns tfalltime @(90...10%) * Vsense (Iout ~ 15 mA); Rsense = 10 8 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC Measured Parameters 4 Measured Parameters BCR450 IC has been measured in test bench with undefined high thermal resistance This is valid for all diagramed DC- and AC- Parameters 4.1 DC- Parameter Vout = 1.0 V, EN = 2.4 V IS vers Temperature (VS); Vsense = 20 mV IS vers Vs (Temperature); Vsense = 20 mV I_s_vers Temp; Vs V_sense = 20 mV; V_out = 1 V; V_en = 2.4 V I_s_vers Vs; Temp V_sense = 20 mV; V_out = 1 V; V_en = 2.4 V 120.00 105.00 -40C 100.00 95.00 0C Vs_8V 90.00 Vs_14V 85.00 Vs_27V 80.00 Vs_40V 75.00 25C 80.00 Is (mA) Is (mA) -25C 100.00 45C 65C 60.00 85C 105C 40.00 Vs_42V 125C 70.00 150C 20.00 65.00 0.00 60.00 -40 -25 0 25 45 65 85 105 125 8 150 14 Is vers Temp_Vs_20mV_Vout1V.vsd I_en_vers Vs; Temp V_sense = 20 mV; V_out = 1 V; V_en = 2.4 V 48.00 48.00 46.00 46.00 44.00 44.00 Vs_8V Vs_14V 40.00 Ien (uA) Ien (uA) 42.00 Vs_27V 38.00 Vs_40V 36.00 Vs_42V 45C 38.00 65C 36.00 85C 32.00 30.00 30.00 Datasheet 65 85 105 125 0C 25C 32.00 45 -25C 40.00 34.00 25 -40C 42.00 34.00 0 42 Ien vers Vs (Temperature); Vsense = 20 mV I_en_vers Temp; Vs V_sense = 20 mV; V_out = 1 V; V_en = 2.4 V -25 40 Is vers Vs_Temp_20mV_Vout1V.vsd Ien vers Temperature (VS); Vsense = 20 mV -40 27 Vs (V) C 105C 125C 150C 8 150 14 27 40 42 C Vs (V) Ien vers Temp_Vs_20mV_Vout1V.vsd Ien vers Vs_Temp_20mV_Vout1V.vsd 9 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC Measured Parameters Isense vers Temperature (VS); Vsense = 20 mV Isense vers Vs (Temperature); Vsense = 20 mV I_sense_vers Vs; Temp V_sense = 20 mV; V_out = 1 V; V_en = 2.4 V 145.00 145.00 140.00 140.00 135.00 135.00 Vs_8V 130.00 Isense (nA) Isense (nA) I_sense_vers Temp; Vs V_sense = 20 mV; V_out = 1 V; V_en = 2.4 V Vs_14V 125.00 Vs_27V 120.00 Vs_40V 115.00 Vs_42V 25C 45C 120.00 65C 115.00 85C 105.00 105.00 100.00 100.00 0 25 45 65 85 105 125 0C 125.00 110.00 -25 -25C 130.00 110.00 -40 -40C 105C 125C 150C 150 8 14 27 C 40 42 Vs (V) Isense vers Temp_Vs_20mV_Vout1V.vsd Iout vers Temperature (VS); Vsense = 20 mV Isense vers Vs_Temp_20mV_Vout1V.vsd Iout vers Vs (Temperature); Vsense = 20 mV I_out_vers Vs; Temp V_sense = 20 mV; V_out = 1 V; V_en = 2.4 V I_out_vers Temp; Vs V_sense = 20 mV; V_out = 1 V; V_en = 2.4 V 120.00 100.00 95.00 -40C 100.00 -25C 85.00 Vs_14V 80.00 Vs_27V Vs_40V 75.00 0C 80.00 Vs_8V Iout (mA) Iout (mA) 90.00 25C 45C 60.00 65C 85C 40.00 Vs_42V 105C 70.00 125C 20.00 65.00 150C 0.00 60.00 -40 -25 0 25 45 65 85 105 125 8 150 14 27 40 42 Vs (V) C Iout vers Temp_Vs_20mV_Vout1V.vsd Vs = 14 V, Vout = 1 V; EN = 2.4 V Iout vers Temperature (VSense) Iout vers Vsense (Temperature) I_out_vers Temp; Vsense V_s = 14 V; V_out = 1 V; V_en = 2.4 V I_out_vers V_sense; Temp V_s = 14 V; V_out = 1 V; V_en = 2.4 V 110mV 114mV 100.00 90.00 -40C 80.00 126mV 80.00 -25C 70.00 130mV 70.00 0C 134mV 60.00 25C 122mV 60.00 Iout (mA) 138mV 50.00 140mV 45C 50.00 65C 40.00 40.00 142mV 30.00 144mV 30.00 105C 146mV 20.00 125C 10.00 150C 148mV 156mV Vsense (mV) Iout vers Temp_Vsense_Vs14V_Vout1V.vsd Datasheet 156 154mV 154 150 152 125 150 105 148 85 146 65 C 144 45 142 25 140 0 138 -25 134 -40 0.00 130 152mV 126 0.00 122 150mV 118 10.00 114 20.00 85C 110 Iout (mA) 100.00 118mV 90.00 Iout vers Vsense_Temp_Vs14V_Vout1V.vsd 10 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC Measured Parameters Vs = 14 V, Vout = 6 V; EN = 20 mV Iout vers EN (Temperature) I_out_vers V_en; Temp V_sense = 20 mV; V_out = 6 V; V_s = 14 V 100.00 -40C 90.00 -25C 0C Iout (mA) 80.00 25C 70.00 45C 65C 60.00 85C 50.00 105C 125C 40.00 150C 30.00 0 0.2 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 5 Ven (V) Iout vers Ven_Vsense20mV_Vs14V_Vout6V.vsd Vs = 14 V, Vsense = 20 mV; EN = 2.4 V Iout vers Temperature (Vout) Iout vers Vout (Temperature) I_out_vers Temperature; V_out V_sense = 20 mV; V_en = 2.4 V; V_s = 14 V I_out_vers V_out; Temp V_sense = 20 mV; V_en = 2.4 V; V_s = 14 V Vout=0V 100.00 100.00 Vout=1V Vout=2V 90.00 Vout=4V Vout=5V 70.00 Vout=6V Vout=7V 60.00 Vout=8V 50.00 40.00 -25C 0C 80.00 Iout (mA) Iout (mA) 80.00 -40C 90.00 Vout=3V 25C 70.00 45C 60.00 65C 85C Vout=9V 50.00 Vout=10V 40.00 105C 125C 150C Vout=11V 30.00 Vout=12V 30.00 -40 -25 0 25 45 65 85 105 125 1 Vout=13V 150 2 3 4 5 6 7 9 10 11 12 13 14 15 Vout (V) Vout=14V C 8 Iout vers Vout_Vsense20mV_Vs14V.vsd Iout vers Temp_Vout_Vsense20mV_Vs14V.vsd Vout = 1 V, Vsense = 20 mV; EN = 2.4 V Is vers VS (Temperature) I_s_vers Vs; Temp V_sense = 20 mV; V_out = 1 V; V_en = 2.4 V 100.00 -40C 90.00 -25C 0C 80.00 Is (mA) 25C 70.00 45C 60.00 65C 85C 50.00 105C 125C 40.00 150C 30.00 6 7 8 9 10 11 12 13 14 15 16 Vs (V) Is vers Vs_Temp_20mV_Vout1V_entire range.vsd Datasheet 11 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC Measured Parameters Vout = 6 V, Vsense = 20 mV; EN = 2.4 V Is vers VS (Temperature) Is vers VS (Temperature) I_s_vers Vs; Temp V_sense = 20 mV; V_out = 6 V; V_en = 2.4 V I_s_vers Vs; Temp V_sense = 20 mV; V_out = 6 V; V_en = 2.4 V 100.00 120.00 -40C 90.00 80.00 -25C 0C 70.00 25C 60.00 45C 0C 25C 45C 60.00 65C 85C 40.00 65C 50.00 -25C 80.00 Is (mA) Is (mA) 100.00 -40C 105C 85C 150C 125C 30.00 0.00 150C 6 6.8 7.6 8.4 9.2 10 11 12 13 14 15 125C 20.00 105C 40.00 8 16 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 Vs (V) Vs (V) Is vers Vs_Temp_20mV_Vout6V.vsd Is vers Vs_Temp_20mV_Vout6V_entire range.vsd Is short -> Vout = 0 V, Vsense = 0 mV; EN = 2.4 V Is vers VS (Temperature) I_s_vers Vs; Temp V_sense = 0 mV; V_out = 0 V; V_en = 2.4 V 100.00 -40C 90.00 -25C 0C 80.00 Is (mA) 25C 70.00 45C 60.00 65C 85C 50.00 105C 125C 40.00 150C 30.00 8 12 16 20 24 27 28.5 29.5 30.5 31.5 32.5 33.5 38 Vs (V) Is vers Vs_Temp_0mV_Vout0V.vsd Is standby -> Vout = 0 V, Vsense = 0 mV; EN = 0 V Is vers VS (Temperature) I_s_vers Vs; Temp V_sense = 0 mV; V_out = 0 V; V_en = 0 V Is (uA) 50.00 45.00 -40C 40.00 -25C 35.00 0C 25C 30.00 45C 25.00 65C 20.00 85C 15.00 105C 10.00 125C 5.00 150C 0.00 8 12 16 20 24 27 29 31 33 35 37 39 41 Vs (V) Is vers Vs_Temp_0mV_Vout0V_EN0V.vsd Datasheet 12 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC Measured Parameters Vout = 6 V, Iout = 15 mA; EN = 2.4 V Vsense vers VS (Temperature) Vsense_vers Vs; Temp Iout = 15 mA; V_out = 6 V; V_en = 2.4 V 155.00 Vsense (mV) 150.00 145.00 Vs=8V 140.00 Vs=14V Vs=27V 135.00 130.00 125.00 -40 -25 0 25 45 65 85 105 125 150 C Vsense vers Vs_Temp_Iout15mA_Vout6V.vsd Vs = 12 V, Iout = 350 mA , Booster Application , see Figure 3 Iout vers Tsolder Typical Temperature Shut Down of BCR450 Booster Application 350 300 Iout (mA) 250 200 150 100 50 0 60 70 80 90 100 110 120 130 140 150 160 170 Tsolderpoint ( C) TSD.vsd Datasheet 13 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC Measured Parameters EN = 2.4 V Vdrop vers Iout Vs typ. Vdrop 6 Internal Transistor 5 Vdrop 4 Vdrop (V) BCR450 3 2 Vout 1 0 0 10 20 30 40 50 60 70 80 90 Iout (mA) BCR450 _Vdrop _Schematic.vsd 4.2 Vdrop .vsd AC- Parameter Response Time Ton & Toff; Vs= 12 V; fPulse= 1 kHz; tduty= 50 % BCR450_Response-Time.vsd Datasheet 14 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC Evaluation Board 5 Evaluation Board The evaluation board is designed to test the BCR450 as a stand alone device for lower LED current applications and also with additional external "booster" transistors for high current, high brightness LEDs. Up to three external transistors BCX68 or BC817SU each could be used on the PCB to minimize thermal problems. 3 LEDs in series for high current mode or 3 LEDs for low current applications can be chosen by setting resistors (for further application hints see AN105). The particular sense voltage can be derived by jumpers which are provided in the layout for each test case. Additional test circuit is included to measure AC characteristics, and the ENABLE input is designed to connect a PWM signal. The PCB is manufactured in double sided FR4 with substrate thickness of 1.0 mm. Vbat BCR450 LED Controller Vs, Pin 6 AC- Measure Vsense, Pin 4 P1 P2 LEDs + Iout, Pin 1 = Vref EN, Pin 3 GND, Pin 2 & 5 BCX68-25 or BC817SU PWM LEDs NPN Power Transistors Jumper-H Jumper-L Rsensehigh Rsenselow BCR450_Application circuit.vsd Figure 3 Datasheet Evaluation board schematic 15 Rev. 3.1, 2013-02-21 BCR450 LED Driver IC Package Information Via 1.3 mm 0.5 mm Drill TOP- Layer CU 70 um FR4 1.0 mm BOTTOM- Layer CU 70 um Cross section of application board.vsd Figure 4 Cross section of evaluation board 6 Package Information 1.1 MAX. B 4 1 2 3 0.35+0.1 -0.05 0.2M B 6x 0.95 0.15+0.1 -0.06 1.60.1 5 2.50.1 6 10 MAX. 0.1 MAX. (0.35) 0.250.1 10 MAX. 2.90.2 (2.25) A 0.2M A 1.9 GPX09300 Figure 5 Package outline; SC74 (dimensions in mm) 0.2 2.7 8 4 Pin 1 marking 3.15 1.15 CPWG5899 Figure 6 Datasheet Tape loading (dimensions in mm) 16 Rev. 3.1, 2013-02-21 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Infineon: BCR450E6327HTSA1