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G5121 - Fixed Frequency White LED Step-Up Converter

Download the G5121 datasheet PDF. This datasheet also covers the G5121-GlobalMixed variant, as both devices belong to the same fixed frequency white led step-up converter family and are provided as variant models within a single manufacturer datasheet.

General Description

The G5121 is a step-up DC/DC converter specifically designed to drive up to 5 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.

Key Features

  • Inherently Matched LED Current.
  • High Efficiency: 87%.
  • Drives Up to Five LEDs from 2.5V Supply.
  • 24V Internal Power Switch.
  • Fast 1MHz Switching Frequency.
  • Uses Tiny 1mm Tall Inductors.
  • Requires Only 1µF Output Capacitors.
  • 19.5V Over Voltage Protection.
  • SOT-23-6 Package.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (G5121-GlobalMixed-modeTechnology.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number G5121
Manufacturer Global Mixed-mode Technology
File Size 575.43 KB
Description Fixed Frequency White LED Step-Up Converter
Datasheet download datasheet G5121 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Global Mixed-mode Technology Inc. G5121 Fixed Frequency White LED Step-Up Converter Features „ Inherently Matched LED Current „ High Efficiency: 87% „ Drives Up to Five LEDs from 2.5V Supply „ 24V Internal Power Switch „ Fast 1MHz Switching Frequency „ Uses Tiny 1mm Tall Inductors „ Requires Only 1µF Output Capacitors „ 19.5V Over Voltage Protection „ SOT-23-6 Package Applications „ White LED Backlight Display for PDA „ Pocket PC „ Smart Phones „ Handheld Devices „ Cellular Phones General Description The G5121 is a step-up DC/DC converter specifically designed to drive up to 5 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.