AAT3194 | High Efficiency 1.5x Fractional Charge Pump For White LED Applications

The AAT3194 is a low noise, constant frequency Charge Pump DC/DC converters that use fractional (1.5X) conversion to increase efficiency in white LED applications. The device CAN be used to produce current levels up to 20mA for each output from a 2.7V to 5.5V input. Low external parts counts (two 1F flying capacitors and two small bypass capacitors at VIN and OUT) make the AAT3194 ideally suited for small battery-power applications. AnalogicTechs Simple Serial Control (S2Cwire) Interface is used to enable, disable, and set the LED drive current for a 32-level logarithmic scale LED brightness control. The AAT3194 has a Thermal Management system to protect the device in the event of a short circuit condition on any of the output pins. Built-in soft-start circuitry prevents excessive inrush current during start-up. High switching frequency enables the use of small external capacitors. A low-current shutdown feature disconnects the load from VIN and reduces quiescent current to less than 1A. The AAT3194 provides four LED current source outputs. The AAT3194 is available in 16-pin quad QFN package as well as in a 12-pin TSOPJW package
By Advanced Analogic Technologies, Inc.
AAT3194 's PackagesAAT3194 's pdf datasheet

AAT3194 Pinout, Pinouts
AAT3194 pinout,Pin out
This is one package pinout of AAT3194,If you need more pinouts please download AAT3194's pdf datasheet.

AAT3194 Application circuits
AAT3194 circuits
This is one application circuit of AAT3194,If you need more circuits,please download AAT3194's pdf datasheet.

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