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AIC1647 - White LED Step-Up Converter

Description

AIC1647 is a fixed frequency step-up DC/DC converter designed to drive white LEDs with a constant current to provide backlight in handheld devices.

Series connection of the LEDs provides identical LED currents resulting in uniform brightness.

Features

  • 1.2MHz Fixed Frequency Current-Mode PWM Operation. Efficiency Up to 84% at VIN=4.2V, 3LEDs, ILED=20mA Drives Up to 6LEDs in series Low Supply Current: 70µA Matches LED Current Require Tiny Inductors and Capacitors Tiny TSOT-23-5, and SOT-23-5 Packages.

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Datasheet Details

Part number AIC1647
Manufacturer aic
File Size 265.79 KB
Description White LED Step-Up Converter
Datasheet download datasheet AIC1647 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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AIC1647 White LED Step-Up Converter in SOT23 FEATURES 1.2MHz Fixed Frequency Current-Mode PWM Operation. Efficiency Up to 84% at VIN=4.2V, 3LEDs, ILED=20mA Drives Up to 6LEDs in series Low Supply Current: 70µA Matches LED Current Require Tiny Inductors and Capacitors Tiny TSOT-23-5, and SOT-23-5 Packages APPLICATIONS Cellular Phones PDAs Digital Still Cameras Handheld Devices White LED Display Backlighting DESCRIPTION AIC1647 is a fixed frequency step-up DC/DC converter designed to drive white LEDs with a constant current to provide backlight in handheld devices. Series connection of the LEDs provides identical LED currents resulting in uniform brightness. This configuration eliminates the need for ballast resistors.