LP8550 Overview
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 I2Cpatible serial interface. The boost converter has adaptive output voltage control based on the LED driver voltages.
LP8550 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 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
- PWM output frequency and LED Current set
- Optional Synchronization to Display VSYNC
- Six LED Outputs with LED Fault (Short/Open)