RT8511B - Richtek

RT8511B 43V Asynchronous Boost WLED Driver

The RT8511B is an LED driver IC that can support up to 10 WLED in series. It is composed of a current mode boost converter integrated with a 43V/2.2A power switch running at a fixed 500kHz frequency and covering a wide VIN range from 2.7V to 24V. The white LED current is set with an external resistor, and the feedback voltage is regulated to 200mV (typ.). Du.

Features

 Wide Input Voltage Range : 2.7V to 24V
 High Output Voltage : up to 43V
 Direct PWM Dimming Control and Frequency from 100Hz to 8kHz
 Internal Soft-Start and Compensation
 200mV Reference Voltage
 PWM Dimming with Internal Filter
 Programmable Over Voltage Protection
 Over Temperature Protection
 Current Limit Protection
 Thin 8-Lead WDFN Package
 RoHS Compliant and Halogen Free Applications
 UMPC and Notebook Computer Backlight
 GPS, Portable DVD Backlight Pin Configurations (TOP VIEW) OVP 1 FB 2 DIMC 3 GND 4 GND 8 EN 7 PWM 6 VIN 9 5 LX WDFN-8L 2x2 Marking Information 0F.