Rohm Breadcrumb

Rohm Referencedesigns

REFLED003 - Reference Design

6ch White LED Driver Built-in Current Driver Boost DC-DC Converter for Automotive

The REFLED003 is a reference design of BD82A26MUF-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. BD82A26MUF-M is a white LED driver for LCD backlight. It has 6ch 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 REFLED003 board.

  • Automotive backlight reference design
  • Supporting BD82A26MUF-M in boost operation
  • Thermal characteristics tested
  • PCB design files are available


This reference design consists of two boards. Each is shown in the table below.

Reference Board Name Outline
REFLED003-EVK-001 LED series: 8pcs / LED current: 750mA
REFLED003-EVK-002 LED series: 12pcs / LED current: 625mA

Design Resources



Board Number Input Voltage Output channels Output current Topology LED Size
REFLED003-EVK-001 7V to 18V 6ch 120mA /ch Boost 8pcs 750mA 60mm x 80mm
REFLED003-EVK-002 7V to 18V 6ch 120mA /ch Boost 12pcs 625mA 60mm x 80mm
REFLED003-EVK-003 7V to 18V 6ch 125mA /ch Boost 8pcs 750mA 60mm x 80mm

Distribution Inventory

Board Number Distributor Quantity Available
REFLED003-EVK-001 - ContactUs
REFLED003-EVK-002 - ContactUs
REFLED003-EVK-003 - ContactUs

Key Components

Board Number Product Category Part Number Datasheet Status SPICE LTspice Thermal Model Symbol & Footprint 3D STEP Samacsys ECAD Library Calc Tool ROHM Solution Simulator
REFLED003-EVK-001 LED Drivers BD82A26MUF-M - Recommended - - -
REFLED003-EVK-001 Schottky Barrier Diodes RB088LAM-60TF - Recommended - - - - -
REFLED003-EVK-002 LED Drivers BD82A26MUF-M - Recommended - - -
REFLED003-EVK-002 Schottky Barrier Diodes RB088LAM-60TF - Recommended - - - - -
REFLED003-EVK-003 LED Drivers BD82A26MUF-M - Recommended - - -
REFLED003-EVK-003 Schottky Barrier Diodes RB088LAM-60TF - Recommended - - - - -