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AAT1236 Datasheet High Efficiency White Led Drivers

Manufacturer: Advanced Analog Technology

Overview: High Efficiency White LED Drivers for Backlight and Keypad General.

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.

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.

AAT1236 Distributor