Download RT4501A Datasheet PDF
RT4501A datasheet preview
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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

Related Richtek Datasheets

Part Number Description
RT4501 High Efficiency Backlight LED Driver
RT4503 Asynchronous Boost Converter
RT4503A Asynchronous Boost Converter
RT4528 High Voltage Buck LED Driver
RT4532 High Efficiency Backlight LED Driver

RT4501A Description

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 Applications

  • Input Voltage Range : 2.5V to 5.5V