AAT2805 | Dual, High Efficiency Charge Pump For White LED Backlight And Flash Applications

The AAT2805 is a dual Charge Pump designed to support both the white LED backlight and Flash applications for systems operating with lithium-ion/polymer batteries. The backlight Charge Pump is capable of driving up to four LEDs at a total of 120mA. The current sinks may be operated individually or in parallel for driving higher current LEDs To maximize power efficiency, the Charge Pump operates in 1X, 1.5X, or 2X mode, where the mode of operation is automatically selected by comparing the forward voltage of each LED with the input voltage. AnalogicTech's AS2Cwire (Advanced Simple Serial Control) serial digital input is used to enable, disable, and set current for each LED with a 16-level logarithmic scale plus four low-current settings down to 50A for optimized efficiency, with a typical operating quiescent current of 50A. The Flash Charge Pump is a Charge Pump doubler with a regulated output voltage. It is designed to deliver 120mA of continuous current and up to 250mA of pulsed current. It has an independent enable pin for improved power savings.The AAT2805 has thermal protection and built-in soft-start circuitry. A low-current shutdown feature disconnects the load from VIN and reduces quiescent current to less than 1A.
By Advanced Analogic Technologies, Inc.
AAT2805 's PackagesAAT2805 's pdf datasheet

AAT2805 Pinout, Pinouts
AAT2805 pinout,Pin out
This is one package pinout of AAT2805,If you need more pinouts please download AAT2805's pdf datasheet.

AAT2805 Application circuits
AAT2805 circuits
This is one application circuit of AAT2805,If you need more circuits,please download AAT2805's pdf datasheet.

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