Patent ID: 6861831

Claim:
A voltage regulator for producing a regulated voltage at a regulator output, the voltage regulator including: a reference voltage generator arranged to provide a reference voltage at a reference output, the reference voltage generator including a plurality of first field effect transistors connected in series, each first field effect transistor being biased so as to operate as a diode, and the reference output being connected to the regulator output; transistor amplifier means arranged to amplify a portion of the reference voltage; and output transistor means connected to said amplified reference voltage portion and to the regulator output such that the output transistor means decreases the regulated voltage when said amplifier reference voltage portion tends to increase, and the output transistor means increases the regulated voltage when said amplified reference voltage portion tends to decrease, wherein a portion of the reference voltage at a node between two of the plurality of first field effect transistors serves as an input to the transistor amplifier means, and wherein the output transistor means includes a seventh field effect transistor, a gate of said seventh transistor being connected so as to receive said amplified reference voltage portion, and a source of said seventh transistor being connected to the regulator output.