RT8473 Datasheet - Richtek

RT8473, High Brightness LED Driver

® RT8473 1A, Hysteretic, High Brightness LED Driver with Internal Switch General .
The RT8473 is a high efficiency, continuous mode inductive step-down converter, designed for driving single or multiple series connected LEDs from a v.

Features

* z 7V to 30V Input Voltage Range z Hysteretic Control with High Side Current Sensing z Internal N-MOSFET with 350mΩ Low RDS(ON) z 1A Output Current z Up to 97% Efficiency z Typical ±5% LED Current Accuracy z Analog or PWM Control Signal for LED Dimming z 300Hz On-Board Ramp Generator z Input Under Vo

Applications

* z Automotive LED Lighting z High Power LED Lighting z Indicator and Emergency Lighting z Architectural Lighting z Low Voltage Industrial Lighting z Signage and Decorative LED Lighting Pin Configurations (TOP VIEW) VIN SENSE 54 23 LX GND ADJ TSOT-23-5 Copyright ©2012 Richtek Technology Corporation.

RT8473-Richtek.pdf