Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 7, 2011
Patent Application Number
12555792
Date Filed
September 8, 2009
Patent Citations Received
Patent Primary Examiner
Patent abstract
A charge pump circuit is provided. A voltage/current conversion circuit compares a feedback voltage that corresponds to the output voltage of the charge pump circuit with a predetermined reference voltage, and generates a bias current that corresponds to the difference therebetween. An oscillator oscillates at a frequency that corresponds to the bias current. A buffer is biased by the bias current, and supplies a gate clock to the charge pump circuit based upon a clock signal output from the oscillator, thereby driving the charge pump circuit.
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