Datasheet4U Logo Datasheet4U.com

AF5121 - Fixed Frequency White LED Step-Up Converter

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.

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.

📥 Download Datasheet

Datasheet preview – AF5121

Datasheet Details

Part number AF5121
Manufacturer AFSEMI
File Size 680.28 KB
Description Fixed Frequency White LED Step-Up Converter
Datasheet download datasheet AF5121 Datasheet
Additional preview pages of the AF5121 datasheet.

📁 Similar Datasheet

  • AF5 - (AF Series) PbS Flat Plate Detectors (Hamamatsu)
  • AF5602 - Synchronous Step-Down Converter (Alfa-MOS)
  • AF58TC - (AF Series) PbS Flat Plate Detectors (Hamamatsu)
Other Datasheets by AFSEMI
  • AF5030E - 2A Synchronous Rectified Buck Converter
  • AF5030S - 1.5A Synchronous Step-Down Converter
  • AF5040 - 3A Synchronous Rectified Buck Converter
  • AF5045EA - 200KHz Switch Buck Converter
  • AF5045SA - 3A 200KHz Switch Buck Converter
  • AF5060E - Switching Buck Converter
  • AF5080SA - 200KHz Switching Buck Converter
  • AF5082EB - 200KHz Switch Buck Converter

Full PDF Text Transcription

Click to expand full text
AF5121 Fixed Frequency White LED Step-Up Converter 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 Applications  Communication equipment  White LED Backlight Display for PDA  Pocket PC  Handheld Devices  Cellular Phones  White LED display backlighting 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 components.
Published: |