| 摘要 |
A first charge pump circuit converts an input voltage (Vin) into a predetermined voltage, to be outputted as a first output voltage (Vout 1 ). A second charge pump circuit converts the first output voltage (Vout 1 ), outputted from the first charge pump circuit, into a predetermined voltage, to be outputted as a second output voltage (Vout 2 ). A control circuit controls charge-discharge states of the first charge pump circuit and the second charge pump circuit. The control circuit synchronously controls a state in which a first output capacitor of the first charge pump circuit is charged, and a state in which a second flying capacitor of the second charge pump circuit is charged.
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