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LP8552 Datasheet High-efficiency Led Backlight Driver

Manufacturer: Texas Instruments

Overview: Product Folder Sample & Buy Technical Documents Tools & Software Support & munity LP8552 SNVS693E – SEPTEMBER 2011 – REVISED SEPTEMBER 2014 LP8552 High-Efficiency LED Backlight Driver For Notebooks.

General Description

The LP8552 is a white LED driver with integrated boost converter.

It has six adjustable current sinks which can be controlled by PWM input or with I2Cpatible serial interface.

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

Key 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…5x cell Li-Ion Batteries.
  • Programmable PWM Resolution.
  • 8 to 13 True Bit (Steady State).
  • Additional 1 to 3 Bits Using Dithering During Brightness Changes.
  • I2C-Compatible and PWM Brightness Control.
  • Automatic PWM & Current Dimming for Improved Efficiency.
  • PWM Outp.

LP8552 Distributor