Patent ID: 6617833
Filing Date: 2003-09-09
Classification: G05F

Abstract:
A Miller compensated voltage regulator, adapted to be supplied with power from a voltage supply, and having an input port and an output port, comprising:a voltage regulation circuit responsive to a reference voltage at the input port to provide a regulated voltage at the output port, comprising a first amplifier adapted to receive a reference voltage at a first input, having a second input, and having an output, a second amplifier having a first input coupled to an internal node, said internal node being coupled to the output of said first amplifier, said second amplifier having a second input adapted to receive a bias voltage and having an output, a pass transistor having a source coupled to the voltage supply, having a drain coupled to the output port, and having a gate coupled to the output of said second amplifier, a Miller compensation capacitor coupled between the output port and said internal node, a feedback circuit coupled between the output port and the second input of said first amplifier; and an enable control circuit adapted to maintain said internal node at a high impedance with respect to the voltage supply for a predetermined interval in response to a transition of an enable signal from signaling a disable mode to signaling an enable mode.