AAT3140 | High Efficiency 1x/1.5x/2x Mode Charge Pump For White LED Applications

The AAT3140 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 device produces current levels up to 30mA on each of its four current source outputs to drive various arrangements of LEDs from a 2.7V to 5.5V input. Outputs may be operated individually or in parallel for driving higher-current LEDs A low external parts count (two 1F flying capacitors and two small 1F capacitors at VIN and CP) make the AAT3140 ideally suited for small battery-powered applications. AnalogicTechs Simple Serial Control (S2Cwire) digital input is used to enable, disable, and set the LED drive current with a 32-level logarithmic scale LED brightness control. The AAT3140 has a Thermal Management system to protect the device in the event of a short circuit condition at an 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. In shutdown mode, the device disconnects the load from VIN and reduces quiescent current to less than 1A. The AAT3140 is available in the very small 12-pin TSOPJW package.
By Advanced Analogic Technologies, Inc.
AAT3140 's PackagesAAT3140 's pdf datasheet
AAT3140ITP-T1 TSOP




AAT3140 Pinout, Pinouts
AAT3140 pinout,Pin out
This is one package pinout of AAT3140,If you need more pinouts please download AAT3140's pdf datasheet.

AAT3140 Application circuits
AAT3140 circuits
This is one application circuit of AAT3140,If you need more circuits,please download AAT3140's pdf datasheet.


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