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BD9421F - LED Drivers

General Description

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.

Key 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-independent Type].
  • Individual detection and individual LED OFF for both OPEN and SHORT circuit.
  • VOUT Over Voltage Protection(OVP) and reduced voltage protection(SCP) circuit.
  • Built-in under v.

📥 Download Datasheet

Datasheet Details

Part number BD9421F
Manufacturer ROHM
File Size 1.10 MB
Description LED Drivers
Datasheet download datasheet BD9421F Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Datasheet LED Drivers for LCD Backlights White LED Driver for large LCD Panels (DCDC Converter Type) BD9421F General Description 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 protection of DCDC, SCP: short circuit protection, open detection of LED string. Thus this is used for conditions of large output voltage and load conditions. Features  6ch LED constant current driver(External PNP Tr Type)  Maximum LED setting current 500mA(VREF Pin setting)  ±2% LED current accuracy(VREF=0.