Patent ID: 7248028

Claim:
Low-power charge pump regulator, comprising: a clock signal; a charge pump regulator circuit comprising a charge pumping circuit and an output circuit; a control circuit operative to activate and inactivate the charge pumping circuit in response to the clock signal; and charge pump regulator circuit comprises: an oscillator circuit operative to provide an oscillating signal; an AND gate operative to receive a first input signal comprising the oscillating signal and a second input signal; a diode operative to receive an output from the AND gate; a charge storage circuit operative to receive an output from the diode and to store charge received from the diode output; a transistor comprising a control input coupled to the charge storage circuit, a first terminal coupled to a supply voltage, and a second terminal operative to supply an output voltage; a first and a second resistor connected in series coupled to the second terminal of the transistor; and an amplifier having a first input operative to receive a reference voltage signal, a second input coupled between the first and the second resistors, and an output coupled to the second input of the AND gate.