A low-power charge pump regulator is provided. The low-power charge pump
regulator may periodically turn off charge pumping portions of the charge
pump circuitry to reduce power consumption. The charge pumping portions
of the charge pump circuitry may then be turned on when they are needed
to maintain the output of the charge pump regulator. In some embodiments,
where the leakage off the voltage regulator output is small, the charge
pumping portions of the charge pump circuitry may only need to be turned
on for brief periods of time.