AAT3167 | High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications

The AAT3167 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 AAT3167 is capable of driving five LEDs for a total of 135mA from a 2.7V to 5.5V input. The current sinks 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 VOUT) make this part ideally suited for small battery-powered applications. 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 115A. For optimized efficiency, low-current mode settings require only 50A of housekeeping current. Each output of the AAT3167 is equipped with built-in protection for VOUT short-circuit and auto-disable for load short-circuit conditions. Built-in soft-start circuitry prevents excessive inrush current during start-up. A low-current shutdown feature disconnects the load from VIN and reduces quiescent current to less than 1A. The AAT3167 is available in a Pb-free, space-saving, thermally-enhanced, 16-pin, 3x4mm TDFN or 16-pin 4x4mm QFN package and is rated over the -40C to +85C temperature range.
By Advanced Analogic Technologies, Inc.
AAT3167 's PackagesAAT3167 's pdf datasheet

AAT3167 Pinout, Pinouts
AAT3167 pinout,Pin out
This is one package pinout of AAT3167,If you need more pinouts please download AAT3167's pdf datasheet.

AAT3167 Application circuits
AAT3167 circuits
This is one application circuit of AAT3167,If you need more circuits,please download AAT3167's pdf datasheet.

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