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AAT3142 Datasheet High Efficiency 1x/1.5x/2x Charge Pump

Manufacturer: Skyworks Solutions

Overview: DATA SHEET AAT3142 High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications.

General Description

The AAT3142 is a low noise, constant frequency charge pump DC/DC converter that uses a tri-mode load switch (1X), fractional (1.5X), and doubling (2X) conversion to maximize efficiency for white LED applications.

The device produces current levels up to 30mA on each of its three current source outputs to drive various arrangements of LEDs from a 2.7V to 5.5V input.

Outputs may be operated individually or in parallel for driving highercurrent LEDs.

Key Features

  • VIN Range: 2.7V to 5.5V.
  • Tri-Mode 1X, 1.5X, and 2X Charge Pump for Maximum Efficiency and VF Coverage.
  • Drives Low-VF and High-VF Type LEDs.
  • Up to Three 30mA Outputs.
  • 32-Position Logarithmic Scale with Digital Control.
  • Low Noise Constant Frequency Operation.
  • 1MHz Switching Frequency.
  • Small.

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