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AAT3158 - High Efficiency 1X/1.5X/2X Charge Pump

General Description

The AAT3158 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 AAT3158 is capable of driving up to four LED channels at 20mA per channel from a 2.

Key Features

  • VIN Range: 2.7V to 5.5V.
  • Fully Programmable Current with Single Wire.
  • 16 Current Levels.
  • Four Low Current Settings Down to 50µA.
  • Low IQ (50µA) for Low Current Mode.
  • Tri-Mode 1X, 1.5X, and 2X Charge Pump for Maximum Efficiency and VF Coverage.
  • Drives Up to Four LED Channels.
  • No Inductors, Low Noise Operation.
  • 1MHz Constant Switching Frequency.
  • Small.

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Full PDF Text Transcription for AAT3158 (Reference)

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DATA SHEET AAT3158 AAT3158 High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications General Description The AAT3158 is a low noise, constant frequency charge pum...

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Description The AAT3158 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 AAT3158 is capable of driving up to four LED channels at 20mA per channel 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 VIN and VOUT) make this part ideally suited for small, batterypowered applications.

📁 Similar Datasheet

Brand Logo Part Number Description Manufacturer
AAT Logo AAT3158 High Efficiency 1X/1.5X/2X Charge Pump AAT

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