Patent ID: 6060944
Filing Date: 2000-05-09
Classification: G05F

Abstract:
A voltage regulator circuit for regulating an input voltage for a functional circuit, comprising:a first n-channel transistor having a control gate, a drain coupled to the input voltage and a source that provides an output for the regulator;a second n-channel transistor having a gate coupled to the gate of the first n-channel transistor, a drain, and a source that is coupled to the source of the first n-channel transistor;a bias voltage generation circuit coupled to the control gates of the first and second transistors;wherein the first n-channel transistor is sized so as to provide lower drive current than the second n-channel transistor; anda selector circuit coupled to the drain of the second n-channel transistor that selectively causes the second n-channel transistor to provide either a drive current or substantially no drive current to the output for the regulator based on a signal that is provided to and sets a state of the functional circuit.