Patent ID: 6049200
Filing Date: 2000-04-11
Classification: G05F

Abstract:
A voltage regulator which comprises:an input terminal for receiving an input voltage;a ground terminal;a final output terminal;a reference voltage source for outputting a reference voltage;an output transistor for outputting a constant output voltage which has a drain connected to said input terminal and a source connected to said final output terminal;an amplifier for amplifying said reference voltage which has an output terminal connected to a gate of said output transistor; anda phase compensating circuit connected to said output terminal of said amplifier,wherein said phase compensating circuit comprises:a voltage generating circuit for generating a constant voltage;a first MOS transistor having a drain connected to said input terminal and a gate connected to said output terminal of said amplifier;a second MOS transistor having a source connected to said source of said first MOS transistor, and a drain and a gate connected in common to an output terminal of said voltage generating circuit; anda first phase compensating capacitor having two terminals, one of said two terminals being connected to said gate of said first MOS transistor and the other of said two terminals being connected to said gate of said second MOS transistor.