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AAT1236 - High Efficiency White LED Drivers

General Description

The AAT1236 is a highly integrated, high efficiency power solution for white LED and keypad backlights in mobile/portable devices.

Key Features

  • SwitchReg™.
  • Input Supply Voltage Range: 2.7V to 5.5V Maximum Boost Output Drive: Up to 24V at 100mA Up to 85% Efficient Operation Up to 2MHz Switching Frequency with Small Inductor User-Programmable Full-Scale LED Current, Up to 30mA Two-Wire, I2C Compliant Serial Interface.
  • Two Addressable Registers.
  • Independent LED Current Control by Group.
  • Backlight Group B1-B2, 16.

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Datasheet Details

Part number AAT1236
Manufacturer Advanced Analog Technology
File Size 0.99 MB
Description High Efficiency White LED Drivers
Datasheet download datasheet AAT1236 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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.