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AT731 - White LED Step-Up Converter

General Description

The AT731 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-lon cell.

Key Features

  • Inherently Matched LED Current High Efficiency: 84% Typical Drives Up to Four LEDs from a 3.2V Supply Drives Up to Eight LEDs from a 5V Supply 36V Rugged Bipolar Switch Fast 1.2MHz Switching Frequency Uses Tiny 1mm Tall Inductors Requires Only 0.22µF Output Capacitor.

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Datasheet Details

Part number AT731
Manufacturer IAT
File Size 0.98 MB
Description White LED Step-Up Converter
Datasheet download datasheet AT731 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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AT731 White LED Step-Up Converter FEATURES Inherently Matched LED Current High Efficiency: 84% Typical Drives Up to Four LEDs from a 3.2V Supply Drives Up to Eight LEDs from a 5V Supply 36V Rugged Bipolar Switch Fast 1.2MHz Switching Frequency Uses Tiny 1mm Tall Inductors Requires Only 0.22µF Output Capacitor APPLICATION Cellular Phones PDAs, Handheld Computers Digital Cameras Mp3 Players GPS Receivers Immense Advance Tech. DESCRIPTION The AT731 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-lon cell. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors.