RT4503 Datasheet - Richtek Technology

RT4503 - Asynchronous Boost Converter

The RT4503/A is a highly integrated LED driver IC capable of driving 10 WLEDs in series. It is composed of a current mode Boost converter integrated with a 36V/1.2A power switch. The RT4503/A supports a wide input voltage range from 2.5V to 5.5V and runs at a fixed frequency of 550kHz. The LED curre.

RT4503 Features

* 2.5V to 5.5V Input Voltage Range

* 36V Open LED Protection for 10 WLEDs

* Pulse Dimming Brightness Control

* 200mV Reference Voltage with ±2% Accuracy

* 550kHz Switching Frequency

* Built-In Soft-Start

* Over-Temperature Protection

* Internal Compensation

* Curr

RT4503-RichtekTechnology.pdf