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AAT3123A - High Efficiency 1X/1.5X Fractional Charge Pump

General Description

The AAT3123/23A/24 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 maximize efficiency for white LED applications.

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 AAT3123/23A/24 has a thermal management system to protect the device in the event of a short-circuit condition at the output pin. Built-i.

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Datasheet Details

Part number AAT3123A
Manufacturer AAT
File Size 342.54 KB
Description High Efficiency 1X/1.5X Fractional Charge Pump
Datasheet download datasheet AAT3123A 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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AAT3123/23A/24 High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications General Description The AAT3123/23A/24 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 maximize efficiency for white LED applications. The device can be used to produce current levels up to 20mA to drive up to six LEDs from a 2.7V to 5.5V input. Outputs may be operated individually or paralleled for driving higher-current LEDs. A low external parts count (two 1µF flying capacitors and two small 1µF capacitors at VIN and OUT) make the AAT3123/23A/24 ideally suited for small battery-powered applications.