LP8553 Overview
The LP8553 is a white LED driver with integrated boost converter. It has four 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.
LP8553 Key Features
- 2 High-Voltage DC/DC Boost Converter with Integrated FET with Four Switching Frequency Options: 156/312/625/1250 kHz
- 2.7V to 22V 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 and PWM Brightness Control
- Automatic PWM & Current Dimming for Improved Efficiency
- PWM Output Frequency and LED Current Set Through Resistors
- Optional Synchronization to Display VSYNC Signal
- 4 LED Outputs with LED Fault (Short/Open) Detection