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BD9470AFM - White LED driver

This page provides the datasheet information for the BD9470AFM, a member of the BD9470AEFV White LED driver family.

Datasheet Summary

Description

BD9470AEFV and BD9470AFM are high efficiency driver for white LED.

They are designed for large sized LCD.

BD9470AEFV and BD9470AFM are built-in DCDC converter that supply appropriate voltage for light source.

Features

  • 6ch LED constant current driver.
  • LED maximum output current 250mA.
  • Individual PWM dimming modulation allowed for LEDs.
  • ±2% LED current accuracy (when each LED is set to 130mA).
  • Built-in LED feedback voltage automatic adjustment circuit according to LED current.
  • Built-in start-up circuit independent of PWM light modulation.
  • built-in VOUT FB voltage maintenance function when PWM=Low（0%）.
  • Built-in LED current stabilization circuit while scanning operation.

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Datasheet preview – BD9470AFM

Datasheet Details

Part number BD9470AFM
Manufacturer ROHM
File Size 1.32 MB
Description White LED driver
Datasheet download datasheet BD9470AFM Datasheet
Additional preview pages of the BD9470AFM datasheet.

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Full PDF Text Transcription

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Datasheet LED driver series for LCD back light White LED driver for medium sized and large sized LCD back light BD9470AEFVBD9470AFM ●General Description BD9470AEFV and BD9470AFM are high efficiency driver for white LED. They are designed for large sized LCD. BD9470AEFV and BD9470AFM are built-in DCDC converter that supply appropriate voltage for light source. BD9470AEFV and BD9470AFM are 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 they are used for conditions of large output voltage and load conditions.
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