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LM3632A - Single-Chip Backlight

General Description

The LM3632A integrates the WLED drivers for both the backlight of the LCD panel and the camera flash along with the bias power for the LCD panel into one device.

Key Features

  • 1 Drives up to Two Strings of Typically 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 Exponential or Linear Dimming.
  • External PWM Input for CABC Backlight Operation.
  • LCD Bias Efficiency > 85%.
  • Programmable Positive LCD bias, 4-V to 6-V, 50- mA Maximum Output Current.

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Full PDF Text Transcription for LM3632A (Reference)

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3632A SNVSA63A – APRIL 2015 – REVISED SEPTEMBER 2015 LM3632A Single-Chip Backlight ...

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A – APRIL 2015 – REVISED SEPTEMBER 2015 LM3632A Single-Chip Backlight With Bias Power and 1.5-A Flash LED Driver 1 Features •1 Drives up to Two Strings of Typically 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 Exponential or Linear Dimming • External PWM Input for CABC Backlight Operation • LCD Bias Efficiency > 85% • Programmable Positive LCD bias, 4-V to 6-V, 50- mA Maximum Output Current • Programmable Negative LCD bias, –4-V to –6-V, 50-mA Maximum Output Current •

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