LP8551 Overview
The LP8551 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.
LP8551 Key Features
- 1 High-Voltage DC/DC Boost Converter with Integrated FET; 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
- 50-mA High-Precision LED Current Sinks
- Programmable PWM Resolution 8 to 13 Bits
- I2C and PWM Input Duty Cycle Brightness Control
- PWM Output Frequency and LED Current Set
- 4 LED Outputs with LED Fault (short/open)
- Low Input Voltage, Overtemperature, Overcurrent
- Minimum Number of External ponents