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LD7889A - 4 Channel LED Backlight Driver

Datasheet Summary

Description

The LD7889A is a 4-channel linear current controller which combines with a boost switching controller.

It’s an ideal solution for driving high power LED backlights.

The LD7889A can deliver high accuracy of constant current to 4 LED strings with 4 internal MOSFET.

Features

  • include LED short and open protection, cycle by cycle current limit, and thermal shutdown. Features.
  • Input Voltage range: 4.5V to 36V.
  • Drives up to 4 strings in parallel, up to 240mA per string.
  • Time-shift PWM dimming control.
  • External PWM dimming control.
  • LED short circuit protection.
  • LED open string protection.

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Datasheet preview – LD7889A

Datasheet Details

Part number LD7889A
Manufacturer Leadtrend Technology
File Size 553.78 KB
Description 4 Channel LED Backlight Driver
Datasheet download datasheet LD7889A Datasheet
Additional preview pages of the LD7889A datasheet.

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Full PDF Text Transcription

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LD7889A 3/29/2012 4-Channel LED Backlight Driver REV: 00 General Description The LD7889A is a 4-channel linear current controller which combines with a boost switching controller. It’s an ideal solution for driving high power LED backlights. The LD7889A can deliver high accuracy of constant current to 4 LED strings with 4 internal MOSFET. For each LED string, the current is adjustable to drive up to 240mA. The LD7889A incorporates 4 individual current regulator channels to give accurate driving current for each LED string. The string-to-string tolerance is set within 2%. PWM input pin controls LED brightness from PWM control signals. The other features include LED short and open protection, cycle by cycle current limit, and thermal shutdown. Features  Input Voltage range: 4.
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