50V 500mA 1ch Source Driver for Automotive

BD83732HFP-M is the 50V tolerant LED current driver. 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 series, BD83732HFP-M has to be used, in case of 3 LEDs in series - BD83733HFP-M.

Product Detail

Part Number | BD83732HFP-MTR
Status | Recommended
Package | HRP7
Unit Quantity | 2000
Minimum Package Quantity | 2000
Packing Type | Taping
RoHS | Yes

Functional Safety:

Category : FS supportive
A product that has been developed for automotive use and is capable of supporting safety analysis with regard to the functional safety.


Common Standard

AEC-Q100 (Automotive Grade)


Constant Current


LED Source Driver

LED Configuration

2 series

Per Channel Drive(Max.)[mA]


LED Open Detection






Operating Temperature (Min.)[°C]


Operating Temperature (Max.)[°C]


Package Size [mm]

9.395x10.54 (t=2.005)


  • 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)

Design Resources



White Paper

  • Cutting-Edge Web Simulation Tool “ROHM Solution Simulator” Capable of Complete Circuit Verification of Power Devices and Driver ICs
  • ROHM Automotive Lighting Solutions

Application Note

  • Thermal Resistance Data BD837xx Series

Technical Articles

Schematic Design & Verification

  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • What Is Thermal Design
  • Basics of Thermal Resistance and Heat Dissipation
  • Method for Calculating Junction Temperature from Transient Thermal Resistance Data
  • Thermal Resistance



  • HRP7 Footprint / Symbol
  • HRP7 3D STEP Data

Packaging & Quality

Package Information

  • Package Information
  • Anti-Whisker formation

Manufacturing Data

  • Factory Information

Environmental Data

  • UL94 Flame Classifications of Mold Compound
  • Compliance with the ELV directive
  • REACH SVHC Contained Report
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)