Patent ID: 8502587

Claim:
A voltage regulator comprising: a plurality of switching devices coupled in parallel and configured to receive an input voltage and to selectively provide a variable available drive current for a regulated DC output voltage; a first comparator configured to compare the regulated DC output voltage to a first reference voltage and to provide a first feedback signal using the comparison; a second comparator configured to compare the regulated DC output voltage to a second reference voltage and to provide a second feedback signal using the comparison; a third comparator configured to compare the regulated DC output voltage to a third reference voltage and to provide a third feedback signal using the comparison; and a logic circuit configured to select at least one of the plurality of switching devices to provide the variable available drive current using the first, second, and third feedback signals from the first, second, and third comparators, wherein the variable available drive current is configured to vary depending on the selected at least one of the plurality of switching devices.