AAT2862

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 low-noise MicroPower™ 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 200mA load current and ground-pin current is only 80A 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 -40C to +85C ambient temperature range.