Patent ID: 7830678

Claim:
A power supply regulator, comprising: a feedback terminal to be coupled to have a feedback current pulled out of the feedback terminal, wherein the feedback current is representative of an output level of a power supply; a node coupled to the feedback terminal to provide a feedback state signal in response to the feedback current, wherein the feedback state signal has a first feedback state that represents an output level of the power supply that is above a threshold level and a second feedback state that represents an output level of the power supply that is below the threshold the threshold level; a control circuit to be coupled to a power switch and coupled to receive the feedback state signal to regulate the output level of the power supply; a first current source coupled to provide a first current to the node, wherein the feedback state signal is pulled to one of the feedback states when the feedback current is greater than the first current and wherein the feedback state signal is pulled to the other of the feedback states when the feedback current is less than the first current; and a second current source switchably coupled to the node to provide a second current to the node to modulate the feedback current and to alter the feedback state of the feedback state signal.