Patent ID: 7724073

Claim:
A charge pump circuit comprising: initialization units each initializing a boost node to an initialization voltage upon initialization; boosting units each boosting the boost node to a higher voltage than the initialization voltage in response to an input voltage upon charge pumping; and first and second pump circuits each including a transfer unit for transferring a voltage of the boost node to an output node and sharing the output node, wherein the transfer unit of the first pump circuit comprises two transfer transistors that are serially connected between the boost node of the first pump circuit and the output node and switched in response to a voltage of a control node of the first pump circuit and the voltage of the boost node of the second pump circuit, and the transfer unit of the second pump circuit comprises two transfer transistors that are serially connected between the boost node of the second pump circuit and the output node and switched in response to a voltage of a control node of the second pump circuit and the voltage of the boost node of the first pump circuit.