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AAT1236

Skyworks Solutions
Part Number AAT1236
Manufacturer Skyworks Solutions
Description High Efficiency White LED Drivers
Published Mar 14, 2015
Detailed Description DATA SHEET AAT1236 High Efficiency White LED Drivers for Backlight and Keypad General Description The AAT1236 is a high...
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AAT1236
AAT1236

Overview
DATA SHEET AAT1236 High Efficiency White LED Drivers for Backlight and Keypad General Description The AAT1236 is a highly integrated, high efficiency power solution for white LED 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 AAT1236 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.
A two-wire I2C serial digital interface 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 AA...


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