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LP8550 - High-Efficiency LED Backlight Driver

Description

The LP8550 is a white-LED driver with integrated boost converter.

It has six adjustable current sinks which can be controlled by PWM input or with I2Ccompatible serial interface.

The boost converter has adaptive output voltage control based on the LED driver voltages.

Features

  • 1 High-Voltage DC/DC Boost Converter with Integrated FET with Four Switching Frequency Options: 156/312/625/1250 kHz.
  • 2.7-V to 22-V Input Voltage Range to Support 1x to 5x Cell Li-Ion Batteries.
  • Programmable PWM Resolution.
  • 8 to 13 True Bits (Steady State).
  • Additional 1 to 3 Bits Using Dithering During Brightness Changes.
  • I2C and PWM Brightness Control.
  • Automatic PWM & Current Dimming for Improved Efficiency.
  • PWM output freq.

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Datasheet preview – LP8550

Datasheet Details

Part number LP8550
Manufacturer Texas Instruments
File Size 1.45 MB
Description High-Efficiency LED Backlight Driver
Datasheet download datasheet LP8550 Datasheet
Additional preview pages of the LP8550 datasheet.

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Full PDF Text Transcription

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LP8550 SNVS657E – SEPTEMBER 2010 – REVISED SEPTEMBER 2014 LP8550 High-Efficiency LED Backlight Driver for Notebooks 1 Features •1 High-Voltage DC/DC Boost Converter with Integrated FET with Four Switching Frequency Options: 156/312/625/1250 kHz • 2.
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