Patent ID: 7812584

Claim:
The method for regulating a voltage comprising: comparing a first signal with a reference signal to create an error signal; generating first and second control signals in response to the error signal; and in a first operating mode: generating a first current in response to the first control signal, the first current flowing towards a first node; generating a second current in response to the first control signal, the second current flowing from the first node, wherein the second current substantially absorbs the first current from the first node and increases a voltage at a second node; and using the second control signal to switch off a transistor; and in a second operating mode: generating a difference current; and using the difference current to increase a level of the first signal so that it is substantially equal to the reference signal, and further including changing a third current to have an increased third current level in response to the first signal being greater than the reference signal and using the difference current to decrease the first signal to be substantially equal to the reference signal, wherein the difference current is substantially equal to a difference between a fourth current and the increased third current level.