Rohm Breadcrumb

Rohm Referencedesigns

REFLED004 - Reference Design

4ch White LED Driver Built-in Current Driver Boost DC-DC Converter for Automotive

The REFLED004 is a reference design of BD83A14EFV-M LEDdriver IC dedicated for automotive backlight application. It is including set of evaluation reports, design resources so that users can refer to board design as well as various test report provided in the design. BD83A14EFV-M is a white LED driver for LCD backlight. It has 4ch current drivers for LED drive, making it ideal for high brightness LED drive. LED pin maximum voltage is 50 V, making it suitable for driving large LCD panels. The dimming is controlled by the PWM signal and can be set up to 20,000: 1@100 Hz. It also supports analog dimming, and can accommodate even higher brightness ranges by combining with PWM dimming. The design require LED board attached to REFLED004-EVK-001 board.

  • Automotive backlight reference design
  • Supporting BD83A14EFV-M in boost operation
  • Thermal characteristics tested
  • PCB design files are available


Design Resources



Board Number Input Voltage Nb of outputs Output voltage Topology Size
REFLED004-EVK-001 7V to 18V 4ch 120mA /ch Boost 60mm x 90mm

Distribution Inventory

Board Number Distributor Quantity Available
REFLED004-EVK-001 - Contact Us

Key Components

Board Number Part Number Product Category Datasheet Status SPICE LTspice® ? Thermal Model Symbol & Footprint 3D STEP Samacsys ECAD Library Calc Tool ROHM Solution Simulator
REFLED004-EVK-001 BD83A14EFV-M LED Drivers - Recommended - - -
REFLED004-EVK-001 RB088LAM-60TF Schottky Barrier Diodes - Recommended - - - - -
REFLED004-EVK-001 LTR10LEZPFL Current Detection Resistors - Recommended -
REFLED004-EVK-001 RQ3G270BJFRA Automotive MOSFETs - Recommended -
REFLED004-EVK-001 RQ3L120BKFRA Automotive MOSFETs - Recommended -