LP8543 Overview
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).
Key Features
- 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-Use EEPROM Calibration for Current, Intensity and Ambient Light Response Setting
- Seven LED Drivers with LED Fault (Short/open) Detection
- Eight-Bit LED Current Control
- Internal Thermal Protection and Backlight Safety Dimming Feature
- Two Wire, SMBus/ I2C-Compatible Control Interface
