RT8477A High Voltage High Multiple-Topology Current LED Driver

Richtek

Description

® RT8477A High Voltage High Current LED Driver General .
The RT8477A is a current mode PWM controller designed to drive an external MOSFET for high current LED applications with wide input voltage (4.

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Datasheet Specifications

Part number: RT8477A
Manufacturer: Richtek
File Size: 196.71 KB
Datasheet: RT8477A-Richtek.pdf
Description: High Voltage High Multiple-Topology Current LED Driver

Features

* Buck Constant Current Converter
* High Voltage : VIN up to 50V, VOUT up to 50V
* 380kHz Fixed Switching Frequency
* Analog or PWM Control Signal for LED Dimming
* Internal Soft-Start to Avoid Inrush Current
* Under-Voltage Lockout

Applications

* with wide input voltage (4.5V to 50V) and output voltage (up to 50V) ranges. With internal 380kHz operating frequency, the size of the external PWM inductor and input/output capacitors can be minimized. High efficiency is achieved by a 100mV current sensing control. LED Dimming control can be done b

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RT8477A High Voltage High Multiple-Topology Current LED Driver Richtek

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