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BD83733HFP-M Dataheets PDF



Part Number BD83733HFP-M
Manufacturers Rohm
Logo Rohm
Description 1ch Source Driver
Datasheet BD83733HFP-M DatasheetBD83733HFP-M Datasheet (PDF)

Datasheet Constant Current LED Drivers 50V 500mA 1ch Source Driver for Automotive BD83732HFP-M /BD83733HFP-M General Description BD83732HFP-M and BD83733HFP-M are 50V tolerant LED current drivers. Suitable for Automotive LED applications, it can control light through constant current output with control using PWM. Having LED open/short detective circuit and LED current de-rating functions integrated, it can deliver high reliability. By utilizing Rohm’s patented PBUS function, it is possible .

  BD83733HFP-M   BD83733HFP-M



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Datasheet Constant Current LED Drivers 50V 500mA 1ch Source Driver for Automotive BD83732HFP-M /BD83733HFP-M General Description BD83732HFP-M and BD83733HFP-M are 50V tolerant LED current drivers. Suitable for Automotive LED applications, it can control light through constant current output with control using PWM. Having LED open/short detective circuit and LED current de-rating functions integrated, it can deliver high reliability. By utilizing Rohm’s patented PBUS function, it is possible to turn OFF all LEDs when a row of LEDs are short/open-circuited if multiple number of the ICs are used In case the LED connected to the output IOUT terminal has 2 LEDs in serise, BD83732HFP-M has to be used, in case of 3 LEDs in series - BD83733HFP-M ( Refer to Page.18 LED Open Detection / Disable LED Open Detection ). Features „ AEC-Q100 Qualified „ Variable form Constant-Current Source Driver „ PWM Dimming Function „ LED constant current set by external resistor „ LED Current De-rating Function „ LED Open/Short detection „ Disable LED Open Detection at low power supply „ Temperature Protective „ Abnormal Output Detection and Output Functions (PBUS) Key Specifications „ Input Voltage Range: 4.5V to 42V „ Max Output Current: 500mA (Max) „ Output Current Accuracy: ±5% (Max) „ Operating Temperature Range: -40°C to +125°C Packages HRP7 W(Typ) x D(Typ) x H(Max) 9.395mm x 10.540mm x 2.005mm HRP7 Application „ On-board Exterior Lamp (Rear Lamp, Turn Lamp, DRL/Position Lamp, Fog Lamp, etc.) „ On-board Interior Lamp (Air Conditioner Lamp, Interior Lamp, Cluster Light, etc.) Basic Application Circuit Figure 1. Typical Application Circuit ○Product configuration: Silicon monolithic integrated circuit www.rohm.com © 2014 ROHM Co., Ltd. All rights reserved. TSZ22111・14・001 ○ The product is not designed for radiation resistance. 1/29 TSZ02201-0G1G0C700310-1-2 4.Feb.2015 Rev.002 BD83732HFP-M / BD83733HFP-M Pin Configurations (TOP VIEW) FIN(GND) Datasheet 1234567 PBUS DISC CRT GND IOUT VIN_F VIN Pin Descriptions HRP7 Package Figure 2. HRP7 Package Pin Configuration Pin No. 1 2 3 4 5 6 7 Pin Name PBUS DISC CRT GND IOUT VIN_F VIN If not used DISC should be shorted to GND. Block Diagram Function Error detection I/O, LED current de-rating input terminal Discharge setting pin Capacitor Resistor Timer setting GND Current output Output current detection Power supply input www.rohm.com © 2014 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 Figure 3. Block Diagram 2/29 TSZ02201-0G1G0C700310-1-2 4.Feb.2015 Rev.002 BD83732HFP-M / BD83733HFP-M Datasheet Absolute Maximum Ratings (Ta=25°C) Parameter Symbol Rating Unit Supply Voltage VIN_F,CRT,DISC,IOUT,PBUS Terminal Voltage Power Dissipation VIN VVIN_F,VCRT,VDISC,VIOUT,VPBUS Pd -0.3~+50 -0.3~VIN 2.29(Note1) V V W Operating Temperature Range Topr -40~125 °C Storage Temperature Range Tstg -55~150 °C Junction Temperature Tjmax 150 °C IOUT Output Maximum Current IOUT 500 mA (Note1) HRP7 De-rate by 18.4mW/°C when operating above Ta=25°C Please refer to page 21 below. Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the absolute maximum ratings. Recommended Operating Conditions Parameter Supply Voltage(Note1) Operating Temperature Range CRTIMER Frequency Range PWM Minimum Pulse Width (Note1) Pd, ASO should not be exceeded Operating Conditions Parameter Current Setting Resistor Capacitor connecting VIN terminal Capacitor connecting IOUT terminal Capacitor connecting CRT terminal DC_IN pull-down resistor Symbol VIN Topr FPWM TMIN Symbol RVIN_F Cvin CIOUT CCRT RDCIN Rating 4.5~42.0 -40~125 100~5000 10 Unit V °C Hz µs Min Max 0.36 3.6 1.0 0.1 0.66 0.01 1.0 - 50 Unit Ω μF μF μF kΩ www.rohm.com © 2014 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 3/29 TSZ02201-0G1G0C700310-1-2 4.Feb.2015 Rev.002 BD83732HFP-M / BD83733HFP-M Datasheet Electrical Characteristics (Unless otherwise specified Ta=-40~125°C, VIN= 13V, RVIN_F=0.47Ω, RPBUS=10kΩ) Parameter Symbol Min Typ Max UNIT Condition Circuit Current IVIN IOUT Terminal Output Current Accuracy IOUT VIN – IOUT Drop Voltage VDR_IOUT IOUT Terminal OFF Current IIOUT_OFF IOUT Current at GND Short IIOUT_SHORT Current Sense Voltage IOUT Voltage at LED Open Detection IOUT Voltage at LED Short Detection CRT Terminal Charge Current VIN_F_REF VIOUT_OPEN VIOUT_ SHORT ICRT_SO CRT Terminal Voltage CRT Terminal Discharge Voltage 1 CRTIMER Discharge Constant CRT Terminal Discharge Voltage 2 CRT Terminal Charge Resistance DISC Terminal Discharge Resistance 1 DISC Terminal Discharge Resistance 2 VCRT_CHA VCRT_DIS1 VCRT_CHA / VCRT_DIS1 VCRT_DIS2 RCHA RD1 RD2 PBUS Terminal De-rating Input Voltage High VDH_PBUS PBUS Terminal De-rat.


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