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LM3631 - Complete LCD Backlight and Bias Power

Description

The LM3631 is a complete LCD backlight and bias power solution for mobile devices.

This one-chip solution has an integrated high-efficiency backlight LED driver and positive/negative bias supplies for LCD drivers addressing the power requirements of high-definition LCDs.

Features

  • 1 Drives up to Two Strings with Maximum of Eight LEDs in Series.
  • Integrated Backlight Boost with 29-V Maximum Output Voltage.
  • Two Low-Side Constant-Current LED Drivers with 25-mA Maximum Output Current.
  • Backlight Efficiency Up to 90%.
  • 11-Bit Linear or Exponential Dimming with up to 17-Bit Output Resolution.
  • External PWM Input for CABC Backlight Operation.
  • LCD Bias Efficiency > 85%.
  • Programmable Positive LCD bias, 4-V to 6-V,.

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Datasheet preview – LM3631

Datasheet Details

Part number LM3631
Manufacturer Texas Instruments
File Size 1.42 MB
Description Complete LCD Backlight and Bias Power
Datasheet download datasheet LM3631 Datasheet
Additional preview pages of the LM3631 datasheet.

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Full PDF Text Transcription

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3631 Complete LCD Backlight and Bias Power LM3631 SNVS834 – AUGUST 2014 1 Features •1 Drives up to Two Strings with Maximum of Eight LEDs in Series – Integrated Backlight Boost with 29-V Maximum Output Voltage – Two Low-Side Constant-Current LED Drivers with 25-mA Maximum Output Current • Backlight Efficiency Up to 90% • 11-Bit Linear or Exponential Dimming with up to 17-Bit Output Resolution • External PWM Input for CABC Backlight Operation • LCD Bias Efficiency > 85% • Programmable Positive LCD bias, 4-V to 6-V, 100-mA Maximum Output Current • Programmable Negative LCD bias, –4-V to –6-V, 80-mA Maximum Output Current • Two Positive Programmable LDO Reference Outputs – 4-V to 6-V, 50-mA Maximum O
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