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AAT3103

Skyworks
Part Number AAT3103
Manufacturer Skyworks
Description Three-Channel Charge-Pump LED Driver
Published Jun 28, 2019
Detailed Description General Description The AAT3103 is a constant frequency charge-pump based current-source white LED driver capable of dri...
Datasheet PDF File AAT3103 PDF File

AAT3103
AAT3103

Overview
General Description The AAT3103 is a constant frequency charge-pump based current-source white LED driver capable of driving one to three LEDs up to 30mA, each.
The charge pumps automatically switch between 1x mode and 2x mode to maintain the highest efficiency and optimal LED current accuracy and matching.
A low external parts count (one 1μF flying capacitor, two small 1μF capacitors at IN and OUT and one current setting resistor) makes the AAT3103 ideally suited for small battery-powered applications.
The AAT3103-1/-2 uses Skyworks' Simple Serial Control (S2Cwire™) interface to enable, disable, and program the LED driving current.
The AAT3103-4 employs a Pulse Width Modulation (PWM) signal with up to 50kHz frequency, 10% to 100% duty cycle to program the LED current.
A low-current shutdown feature disconnects the load from IN and reduces quiescent current to less than 1µA.
Built-in soft-start circuitry prevents excessive inrush current during start-up.
Integrated short circuit a...


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