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LP8543 - SMBus/I2C Controlled WLED Driver

General Description

The LP8543 is a white LED driver with integrated boost converter.

It has 7 adjustable current sinks which can be controlled by SMBus or I2C-compatible serial interface, PWM input and Ambient Light Sensor (ALS).

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

Key Features

  • 1.
  • 2 High-Voltage DC/DC Boost Converter with Integrated FET.
  • 5.5V to 22V Input Voltage Range to Support 2x, 3x and 4x Li-Ion Batteries.
  • PWM Phase Shift Control with Adaptive Boost Output to Increase Efficiency Compared to Conventional Boost Converters Topologies.
  • PWM Brightness Control for Single Wire Control and Stand-Alone Use.
  • Digital Ambient Light Sensor Interface with User-Programmed Ambient Light to Backlight Brightness Curve.
  • Easy-to-U.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LP8543 www.ti.com SNVS604D – AUGUST 2009 – REVISED MARCH 2013 SMBus/I2C Controlled WLED Driver for Medium-Sized LCD Backlight Check for Samples: LP8543 FEATURES 1 •2 High-Voltage DC/DC Boost Converter with Integrated FET • 5.5V to 22V Input Voltage Range to Support 2x, 3x and 4x Li-Ion Batteries.