LOW DROPOUT VOLTAGE REGULATOR AND METHOD

摘要

In accordance with an embodiment, a low dropout voltage regulator includes an error amplifier connected to an output driver. The error amplifier has an output connected to an input of the output driver and an input connected to an input of the output driver. The output driver has an input coupled for receiving an input signal. In accordance with another embodiment, a method for regulating a voltage is provided that includes operating a voltage regulator under control of an output voltage regulation loop in response to the voltage regulator not being in a low dropout region. The voltage regulator is operated under control of a quiescent current regulation loop in response to the voltage regulator being in a low dropout region.

主权项

1. A low dropout voltage regulator, comprising:
an error amplifier having a plurality of input terminals and an output terminal, a first input terminal of the plurality of input terminals of the error amplifier coupled for receiving a reference voltage; and an output driver having a plurality of input terminals and a plurality of outputs, a first input terminal of the plurality of input terminals of the output driver coupled to the output terminal of the error amplifier, a first output of the plurality of outputs of the output driver coupled to a second input terminal of the plurality of inputs of the error amplifier, a second input terminal of the plurality of input terminals of the output driver coupled for receiving an input signal.