RT4501A Overview
The RT4501/A is a high-efficiency LED driver for backlight applications. An asynchronous boost converter with an internal Schottky diode and a current source driver are designed to support 6LED/channel with wide input voltage range from 2.5V to 5.5V. An I2C interface can provide easy backlight control in fast and high speed mode.
RT4501A Key Features
- Input Voltage Range : 2.5V to 5.5V
- Internal Schottky Diode
- Fast-speed mode I2C patible Interface
- Drive Up to 7 WLEDs in 2 String
- External PWM/Pulse Brightness Control
- 550k/1.1MHz Switching Frequency
- Built-in Internal Soft-Start
- PWM Dimming/Pulse Dimming Resolution 256/128
- I2C Programmable 256 Steps Linear Current
- Up to 85% Efficiency with Small Magnetics
RT4501A Applications
- Input Voltage Range : 2.5V to 5.5V