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AAT3122 - High Efficiency 1X/1.5X Fractional Charge Pump

General Description

The AAT3122 is a low noise, constant frequency charge pump DC/DC converter that uses a dual mode load switch (1X) and fractional (1.5X) conversion to increase efficiency in white LED applications.

With input voltages ranging from 2.7V to 5.5V, the device can produce an output current of up to 120mA.

Key Features

  • ChargePump™.
  • AnalogicTech's Simple Serial Control™ (S2Cwire™).
  • interface is used to enable, disable, and set the.
  • LED drive current with a 32-level logarithmic scale.
  • LED brightness control. The AAT3122 has a ther.
  • mal management system to protect the device in.
  • the event of a short-circuit condition on any of the output pins. Built-in soft-start circuitry preven.

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Datasheet Details

Part number AAT3122
Manufacturer AAT
File Size 288.36 KB
Description High Efficiency 1X/1.5X Fractional Charge Pump
Datasheet download datasheet AAT3122 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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AAT3122 High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications General Description The AAT3122 is a low noise, constant frequency charge pump DC/DC converter that uses a dual mode load switch (1X) and fractional (1.5X) conversion to increase efficiency in white LED applications. With input voltages ranging from 2.7V to 5.5V, the device can produce an output current of up to 120mA. A low external parts count (two 1µF flying capacitors and two small bypass capacitors at VIN and OUT) makes the AAT3122 ideally suited for small battery-powered applications. Features • • • • • • • • ChargePump™ • AnalogicTech's Simple Serial Control™ (S2Cwire™) • interface is used to enable, disable, and set the • LED drive current with a 32-level logarithmic scale • LED brightness control.