RT4503 Overview
The RT4503/A is a highly integrated LED driver IC capable of driving 10 WLEDs in series. It is posed 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.
RT4503 Key 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 pensation
- Current Limit
- P pin for RT4503 only