AAT2862

PRODUCT DATASHEET www.DataSheet4U.com AAT2862 Backlight LED Driver and Multiple LDO Lighting Management Unit Features Input Voltage Range: 2.7V to 5.5V Tri-Mode Charge Pump ▪ Drives up to Eight LEDs ▪ 32 Programmable Backlight Current with Auto-fade ▪ Settings Ranging From 500μA to 30mA ▪ Drives up to Two Auxiliary LEDs ▪ 1MHz Switching Frequency ▪ Automatic Soft Start ▪ I2C Selectable Drivers Four Linear Regulators ▪ 200mA Output Current ▪ 200mV Dropout ▪ I2C Programmable Output Voltage from 1.2V to 3.3V ▪ Output Auto-Discharge for Fast Shutdown Built-In Thermal Protection Automatic Soft Start -40°C to +85°C Temperature Range TQFN34-24 Package ChargePumpTM General Description The AAT2862 is a highly integrated charge pump-based lighting management unit with four linear regulators optimized for single-cell lithium-ion/polymer systems. The charge pump provides power for all LED outputs and multiple LED configurations are available. The LED outputs can be programmed up to 30mA each and two LED outputs can be programmed up to 60mA each. An I2C serial digital interface is used to enable, disable, and set the current to one of 32 levels. Current matching is better than 3% for uniform display brightness, and high current matching is better than 5% for uniform power dissipation. The AAT2862 also offers four high-performance lownoise MicroPower™ low dropout (LDO) linear regulators. The regulators are enabled and their output voltages are set through the I2C serial in...