Patent ID: 7471157

Claim:
A charge pump, comprising: an output terminal; a charge pump stage coupled to the output terminal to output at the output terminal a voltage, said charge pump stage including a first transistor to receive a current and a second transistor coupled to the first transistor to bias the current received by the first transistor: and a feedback loop coupled to the charge pump stage to generate a bias input for the charge pump stage to affect the output of the output voltage, wherein the feedback loop comprises a replica of the charge pump stage having a structure and components that substantially mirror the structure and components of the charge pump stage, including a node to have a voltage that mirrors the output voltage of the output terminal of charge pump stage, wherein the second transistor is coupled to the feedback loop, the feedback loop adapted to provide, selectively, a bias input to the second transistor, and to bias the current received by the first transistor based at least in part on the received bias input.