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AP1521 - White LED Step-Up Converter

General Description

The AP1521 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current.

The device can drive two, three or four LEDs in series from a Li-Ion cell.

Key Features

  • s - Inherently Matched LED Current - Drives Up to Four LEDs from a 3.2V Supply - Drives Up to Six LEDs from a 5V Supply - High Efficiency: 84% Typical - Fast 1MHz Switching Frequency - 36V Rugged Bipolar Switch - Low Profile SOT23-5 Pb-Free Packaging.

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Datasheet Details

Part number AP1521
Manufacturer Anachip
File Size 197.37 KB
Description White LED Step-Up Converter
Datasheet download datasheet AP1521 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.

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White LED Step-Up Converter AP1521 „ Features - Inherently Matched LED Current - Drives Up to Four LEDs from a 3.2V Supply - Drives Up to Six LEDs from a 5V Supply - High Efficiency: 84% Typical - Fast 1MHz Switching Frequency - 36V Rugged Bipolar Switch - Low Profile SOT23-5 Pb-Free Packaging „ Applications - Cellular Phones - PDAs, Hand-held Computers - Digital Cameras - MP3 Players - GPS Receivers „ Pin Assignments Top View VIN SHDN SW VSS FB SOT23-5L „ General Description The AP1521 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. The device can drive two, three or four LEDs in series from a Li-Ion cell.