AAT1235 Overview
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.
AAT1235 Key Features
- SwitchReg™
- Five 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
- Fast, 1MHz Serial Interface Non-Pulsating, High-Performance LED Current Drive for Uniform Illumination
- 10% Absolute Accuracy
- 2% Channel-to-Channel Matching Over-Voltage and Over-Temperature Protection Automatic Soft-Start Minimizes Large Inrush
