Patent ID: 7050315

Claim:
An integrated circuit, comprising: a first circuit; and a charge pump, for receiving an input voltage applied at a positive power supply input terminal and outputting a boosted voltage from an output terminal to said first circuit, said charge pump comprising: a plurality of first capacitors; a plurality of first switching elements each for controllably connecting a low potential side of a corresponding one of said first capacitors to said positive power supply input terminal; a plurality of second switching elements each for controllably connecting a high potential side of the corresponding one of said first capacitors to said output terminal; a plurality of third switching elements each connected to a corresponding one of said first capacitors in series; a fourth switching element for connecting one end of a series circuit of each said corresponding one of said first capacitors and said plurality of third switching elements to said positive power supply input terminal; a fifth switching element for connecting the other end of the series circuit of each said corresponding one of said first capacitors and said plurality of third switching elements to a negative power supply input terminal; a second capacitor coupled to said plurality of first capacitors; and a control circuit, for controlling each of said first switching elements, each of said second switching elements, each of said third switching elements, said fourth switching element, and said fifth switching element, in response to a clock signal.