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AAT3166 - High Efficiency 1X/1.5X/2X Charge Pump

Datasheet Summary

Description

The AAT3166 is a low noise, constant frequency charge pump DC/DC converter that uses a trimode load switch (1X), fractional (1.5X), and doubling (2X) conversion to maximize efficiency for white LED applications.

Features

  • ChargePump™.
  • VIN Range: 2.7V to 5.5V Fully Programmable Current with Single Wire.
  • 16-Step Logarithmic Scale.
  • 14/18/27mA Max Current.
  • Four Low-Current Settings Down to 115µA.
  • Low IQ (50µA) for Single-Channel, LowCurrent Mode Tri-Mode 1X, 1.5X, 2X Charge Pump for Maximum Efficiency and VF Coverage Drives Up to Four LEDs Individual M.

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Datasheet Details

Part number AAT3166
Manufacturer AAT
File Size 411.25 KB
Description High Efficiency 1X/1.5X/2X Charge Pump
Datasheet download datasheet AAT3166 Datasheet
Additional preview pages of the AAT3166 datasheet.

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Full PDF Text Transcription

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High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications General Description The AAT3166 is a low noise, constant frequency charge pump DC/DC converter that uses a trimode load switch (1X), fractional (1.5X), and doubling (2X) conversion to maximize efficiency for white LED applications. The AAT3166 is capable of driving four LEDs for a total of 108mA from a 2.7V to 5.5V input. The current sinks may be operated individually or in parallel for driving higher-current LEDs. A low external parts count (two 1µF flying capacitors and two small 1µF capacitors at IN and OUTCP) make this part ideally suited for small, battery-powered applications.
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