DESCRIPTION

The APU1206 family of devices are ultra low dropout 1A regulators using PNP transistor as the pass element. These products are ideal when a single input supply is only available and the dropout voltage is less than 1V, exceeding the minimum dropout characteristics of NPN/PNP hybrid regulators. One common application of these regulators is where input is 3.3V and a 2.5V output is needed.

Besides the low dropout of less than 0.5V, other features of the family of the parts are: micro-power shutdown capability and output UVLO detection where Flag pin is switched low when output is below 5% of its nominal point.

FEATURES

■ Low Dropout Voltage (500mV at 1A)

■ 1% Voltage Reference Accuracy

■ Low Ground Current

■ 1µA Maximum Quiescent Current in Shutdown (APU1207, APU1208)

■ Fast Transient Response

■ Current Limit and Thermal Shutdown

■ Error Flag Signal for Output out of Regulation (APU1207, APU1208)

■ RoHS Compliant

APPLICATIONS

■ 2.5V Supply from 3.3V Input for the new generation of Logic ICs

■ Computer Mother Board, Add-On Cards

■ High Efficiency Post Regulator in Switch Mode Power Supply (SMPS)