Patent ID: 6356501
Filing Date: 2002-03-12
Classification: H02M

Abstract:
A high-voltage charge pump circuit for use in a semiconductor memory device, comprising:a precharge control means for precharging a first and a second nodes to a power potential in response to a first and a second clocks, respectively; a precharge means for precharging a third and a fourth nodes to the power potential in response to voltage levels of the first and second nodes, respectively; a first charge pumping means for bootstrapping the first and the second nodes to twice the power potential in response to the first and the second clocks, respectively; a second charge pumping means for bootstrapping the third and the fourth bootstrapping nodes to twice the power potential in response to a third and a fourth clocks; and a transfer means for transferring voltage level of the third and the fourth nodes to an exterior in response to voltage levels of the fourth and the third nodes, respectively.