TX5121 - Fixed Frequency WhiteLED Step-Up Converter

Description

LEDs with constant current.

e need for ballast resistors.

Features

l Inherently Matched LED Current l High Efficiency:82% l Drives Up to Five LEDs from 2.2V Supply l 17V Over Voltage Protection l Fast 1.4MHz Switching Frequency l Requires Only 1μF Output Capacitors l SOT-23-6 Package.

ChipSourceTek

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Datasheet Details

Part number	TX5121
Manufacturer	ChipSourceTek
File Size	517.82 KB
Description	Fixed Frequency WhiteLED Step-Up Converter
Datasheet	TX5121 Datasheet
Additional preview pages of the TX5121 datasheet.

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Full PDF Text Transcription

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TX5121 Fixed Frequency WhiteLED Step-Up Converter Features l Inherently Matched LED Current l High Efficiency:82% l Drives Up to Five LEDs from 2.2V Supply l 17V Over Voltage Protection l Fast 1.4MHz Switching Frequency l Requires Only 1μF Output Capacitors l SOT-23-6 Package Applications l Communication equipment l Handheld Devices l White LED Backlight Display for PDA l Pocket PC l Cellular Phones l White LED display backlighting k General Description The TX5121 is a step-up DC/DC converter e specifically designed to drive up to 5 series white LEDs with constant current. Series connection of T the LEDs provides identical LED currents resulting in uniform brightness and eliminates the e need for ballast resistors. The TX5121 switches at 1.

Published: Apr 17, 2025 |