AAT1235 | High Efficiency White LED Drivers For Backlight And Keypad

The AAT1235 is a highly integrated, high efficiency power solution for white LED backlight and keypad backlights in mobile/portable devices. It is based on a switching boost converter which steps up the single-cell lithium-ion/polymer battery voltage to drive 5 strings of series-connected white LEDs with precision current regulation. The AAT1235 is capable of driving a total of four LEDs per channel. The boost converter CAN produce an output drive of up to 24V at 100mA. The high switching frequency (up to 2MHz) provides fast response to load transients and allows the use of small external components. A fully integrated control circuit simplifies the design and reduces total solution size. AnalogicTech's Advanced Simple Serial Control (AS2Cwire) serial digital input is used to individually turn each output sink on/off and adjust the LED current by group. Unlike conventional pulse width modulation (PWM) control of LED brightness, the AAT1235 drives the LEDs with constant, non-pulsating current. A similar device is also available with an I2C two-wire interface; please see the AAT1236 datasheet. The AAT1235 is available in a Pb-free, thermally-enhanced 16-pin 3x4mm TDFN package and is specified for operation over the -40C to +85C temperature range.
By Advanced Analogic Technologies, Inc.
AAT1235 's PackagesAAT1235 's pdf datasheet
AAT1235IRN-T1




AAT1235 Pinout, Pinouts
AAT1235 pinout,Pin out
This is one package pinout of AAT1235,If you need more pinouts please download AAT1235's pdf datasheet.

AAT1235 Application circuits
AAT1235 circuits
This is one application circuit of AAT1235,If you need more circuits,please download AAT1235's pdf datasheet.


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