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BD9409F - White LED Driver

Description

BD9409F is a high efficiency driver for white LEDs and is designed for large LCDs.

BD9409F has a boost DCDC converter that employs an array of LEDs as the light source.

Features

  • DCDC converter with current mode.
  • LED protection circuit (Over boost protection(FB_H), LE.

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Datasheet Details

Part number BD9409F
Manufacturer ROHM
File Size 1.36 MB
Description White LED Driver
Datasheet download datasheet BD9409F Datasheet

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Full PDF Text Transcription

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Datasheet LED Drivers for LCD Backlights 1ch Boost up type White LED Driver for large LCD BD9409F 1.1 General Description BD9409F is a high efficiency driver for white LEDs and is designed for large LCDs. BD9409F has a boost DCDC converter that employs an array of LEDs as the light source. BD9409F has some protect functions against fault conditions, such as over-voltage protection (OVP), over current limit protection of DCDC (OCP), LED OCP protection, and Over boost protection (FBMAX). Therefore it is available for the fail-safe design over a wide range output voltage. Key Specifications  Operating power supply voltage range: 11.5V to 35.0V  Oscillator frequency of DCDC: 150kHz (RT=100kΩ)  Operating Current: 2.8 mA(Typ.)  Operating temperature range: -40°C to +105°C 1.
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