Features: VINRange: 2.7V to 5.5VDual Charge Pump to Support Backlight andFlash LEDsBacklight Charge Pump:--Regulated Curren--Four Current Sink Input--A2Cwire Brightness Control --Tri-Mode Charge Pum--Maximum 30mAof Current Per Inpu--Low LQ(50A) in Light Load ModFlash Charge Pump:--Regulated Output...
AAT2806: Features: VINRange: 2.7V to 5.5VDual Charge Pump to Support Backlight andFlash LEDsBacklight Charge Pump:--Regulated Curren--Four Current Sink Input--A2Cwire Brightness Control --Tri-Mode Charge Pum...
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US $.26 - .34 / Piece
Switching Converters, Regulators & Controllers 1.5A step-down Cnvrt
US $.26 - .34 / Piece
Switching Converters, Regulators & Controllers 1.5A step-down Cnvrt
Symbol | Description | Value | Units |
VIN | Input Voltage | -0.3 to 6.0 | V |
V EN/SET EN_FL |
EN/SET; EN_FLto GND Voltage | -0.3 to VIN + 0.3 | V |
TLEAD | Maximum Soldering Temperature (at leads, 10 sec) | 300 | °C |
The AAT2806 is a dual charge pump designed to support both the white LED backlight and flash appli- cations for systems operating with lithium-ion/poly- mer 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 par- allel for driving higher current LEDs. To maximize power efficiency, the charge pump AAT2806 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 A2S Cwire™(Advanced Simple Serial Control™serial digital input is used to enable, dis- able, and set current for each LED with a 16-level logarithmic scale plus four low-current settings down to 50Afor optimized efficiency, with a typical oper ating quiescent current of less than 50A