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AF5121 Datasheet Fixed Frequency White Led Step-up Converter

Manufacturer: AFSEMI

Overview: AF5121 Fixed Frequency White LED Step-Up Converter.

Datasheet Details

Part number AF5121
Manufacturer AFSEMI
File Size 680.28 KB
Description Fixed Frequency White LED Step-Up Converter
Datasheet AF5121-AFSEMI.pdf

General Description

The AF5121 is a step-up DC/DC converter specifically designed to drive up to 6 series white LEDs with constant current.

Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminates the need for ballast resistors.

The AF5121 switches at 1.4MHz, allowing the use of tiny external ponents.

Key Features

  • Inherently Matched LED Current.
  • High Efficiency:82%.
  • Drives Up to Six LEDs from 2.2V Supply.
  • 20V Over Voltage Protection.
  • Fast 1.4MHz Switching Frequency.
  • Requires Only 1μF Output Capacitors.
  • SOT-23-6 Package.

AF5121 Distributor