AAT2862 Datasheet | Analogic Corporation

PRODUCT DATASHEET .. 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 30m A - Drives up to Two Auxiliary LEDs - 1MHz Switching Frequency - Automatic Soft Start - I2C Selectable Drivers - Four Linear Regulators - 200m A Output Current - 200m V 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 Charge Pump TM 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 30m A each and two LED outputs can be programmed up to 60m A 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 Micro Power™ low dropout (LDO) linear regulators. The regulators are enabled and their output voltages are set through the I2C serial interface. Each LDO can supply up to 200m A load current and ground-pin current is only 80μA making the AAT2862 ideal for battery-operated applications. The AAT2862 is available in a Pb-free, space saving TQFN34-24 package and operates over the -40°C to +85°C ambient temperature range. Applications - Camera Enabled Mobile Devices - Digital Still Cameras - Multimedia Mobile Phones .analogictech....