| 摘要 |
A charge pump including an output terminal, an external capacitor, and a switch module is provided. The output terminal is coupled to an internal capacitor disposed inside an integrated circuit (IC). The external capacitor is disposed outside the IC. The switch module, coupled to the external capacitor and the internal capacitor configured to control the external capacitor and the internal capacitor to charge and discharge by turns. In a first operating period, the switch module controls the external capacitor to charge without providing current to the output terminal, and controls the internal capacitor to discharge to the output terminal.
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