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RT4503A 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

Related Richtek Datasheets

Part Number Description
RT4503 Asynchronous Boost Converter
RT4501 High Efficiency Backlight LED Driver
RT4501A High Efficiency Backlight LED Driver
RT4528 High Voltage Buck LED Driver
RT4532 High Efficiency Backlight LED Driver

RT4503A Description

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.