AAT3123 | High Efficiency 1x/1.5x Fractional Charge Pump For White LED Applications

The AAT3123 AAT3124 is a low noise, constant frequency Charge Pump DC/DC converter that uses a dual mode Load Switch (1X) and fractional (1.5X) conversion to maximize efficiency for white LED applications. The device CAN be used to produce current levels up to 20mA to drive up to six (6) LEDs from a 2.7V to 5.5V input. Outputs may be operated individually or paralleled for driving higher-current LEDs Low external parts counts (two 1F flying capacitors and two small 1F capacitors at VIN and OUT) make the AAT3123 AAT3124 ideally suited for small battery-powered applications. AnalogicTechs Simple Serial Control (S2Cwire) Interface is used to enable, disable, and set the LED drive current with a 32-level logarithmic scale LED brightness control. The AAT3123 AAT3124 has a Thermal Management system to protect the device in the event of a short circuit condition at the output pin. Built-in soft-start circuitry prevents excessive inrush current during start-up. A high Charge Pump switching frequency enables the use of very small external capacitors. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to less than 1mA. The AAT3123 is available in very small 12-pin TSOPJW package, and the six-output AAT3124 is available in a 16-pin 4x4mm QFN package.
By Advanced Analogic Technologies, Inc.
AAT3123 's PackagesAAT3123 's pdf datasheet
AAT3123ITP-20-T1 TSOP
AAT3123AITP-20-T1 TSOP
AAT3124ISN-20-T1 QFN
AAT3124ITO-20-T1 TSOP
AAT3123A
AAT3124




AAT3123 Pinout, Pinouts
AAT3123 pinout,Pin out
This is one package pinout of AAT3123,If you need more pinouts please download AAT3123's pdf datasheet.

AAT3123 Application circuits
AAT3123 circuits
This is one application circuit of AAT3123,If you need more circuits,please download AAT3123's pdf datasheet.


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