| 摘要 |
A charge pump for converting a voltage at an input node into a regulated voltage and outputting the regulated voltage at an output node, includes: a first capacitor; a first switch with adjustable on-state resistance coupled between a first electrode of the first capacitor and the output node; a second switch coupled between a second electrode of the capacitor and ground; a third switch coupled between the input node and the second electrode of the capacitor; a fourth switch with adjustable on-state resistance coupled between the input node and the first electrode of the capacitor; a feedback loop for monitoring the regulated voltage of the output node and generating a control signal to regulate resistances of the first, fourth switches; an oscillator for generating a first and second pulse signals to switch the open/close states of the first, third switches and the second, fourth switches, respectively.
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