| 摘要 |
A charge pump circuit is provided to solve the problem of voltage drop while passing through each boosting stage and the problem of the increase of a threshold voltage by body bias effect according as an output voltage increases. A charge pump circuit includes a plurality of boosting stages(110), a first clock signal supply stage and a second clock signal supply stage. Each boosting stage comprises a pumping capacitor(Cp), a gate charging part(101) and a charge transfer switching part(102). The pumping capacitor boosts a voltage of a node connected to a corresponding pumping capacitor when a first or a second clock signal in a high state is applied to the corresponding pumping capacitor. The gate charging part comprises a diode and a first capacitor, and transfers the voltage of the node to the first capacitor. The charge transfer switching part comprises a transistor and a second capacitor, and transfers a voltage of a previous node to a post node.
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