BD9421F Datasheet (ROHM)

BD9421F, LED Drivers

BD9421F is high efficiency driver for white LED.

This is designed for large sized LCD.

BD9421F is built-in DCDC converters that supply appropriate voltage for light source.

BD9421F is also built-in protection function for abnormal state such as OVP: over voltage protection, OCP: over current limit p

BD9421F Features

* 6ch LED constant current driver(External PNP Tr Type)

* Maximum LED setting current 500mA(VREF Pin setting)

* ±2% LED current accuracy(VREF=0.9V setting)

* Built-in DC/DC converter

* Analog Dimming(Linear) function

* LED protection function(OPEN/SHORT protection)[PWM-indepe