The AAT3143 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.
Key Features
Input Voltage Range: 2.7V to 5.5V.
PWM Brightness Control.
Tri-Mode 1X, 1.5X, and 2X Charge Pump for Maximum
Efficiency and VF Coverage.
Full PDF Text Transcription for AAT3143 (Reference)
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DATA SHEET AAT3143 High Efficiency 1X/1.5X/2X Charge Pump with PWM Control for White LED Applications General Description The AAT3143 is a low noise, constant frequency c...
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s General Description The AAT3143 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 AAT3143 can deliver current levels up to 80mA to drive white LEDs connected to the four current source outputs from a 2.7V to 5.5V input. The current source outputs may source up to 20mA each and 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) makes the AAT3143
AAT3143 Datasheet
