RT8543
Overview
The RT8543 is a high efficiency white LED driver. It is designed for LCD panel that employs an LED array as the lighting source.
- Wide Input Voltage : VIN 2.5V to 24V
- High Output Voltage : VOUT up to 43V
- Current Mode Boost Regulator 600kHz to 1.2MHz Switching Frequency Up to 85% High Frequency
- Adjustable Full Channel Current from 5mA to 50mA and Matched to 2%
- Channel Current Regulation with ±3% Accuracy
- Dimming Controls Direct PWM Dimming up to 20kHz and Minimum On-Time to 500ns PWM to Analog Dimming up to 20kHz with 8 bit resolution
- Built-In Soft-Start to Prevent Inrush Current without External Capacitor
- Disconnects LED in Shutdown
- Protection Strings Open Detection Current Limit Protection Adjustable Over-Voltage Protection Over-Temperature Protection
- 20-Lead WQFN and UQFN Package
