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AAT1235

Part Number	AAT1235
Manufacturer	Advanced Analogic Technologies
Description	High Efficiency White LED Drivers
Published	Aug 28, 2008
Detailed Description	High Efficiency White LED Drivers for Backlight and Keypad General Description The AAT1235 is a highly integrated, high ...
Datasheet	AAT1235 PDF File

Overview

High Efficiency White LED Drivers for Backlight and Keypad General Description 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 singlecell 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 integr...

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