AAT1236 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.
AAT1236 Key Features
- 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
- Two-Wire, I2C pliant Serial Interface
- Two Addressable Registers
- Independent LED Current Control by Group
- Backlight Group B1-B2, 16 Settings
- Auxiliary Group A1-A3, 16 Settings
- Independent LED ON/OFF Control