Patent ID: 8125266
Filing Date: 2012-02-28
Classification: H02M

Abstract:
1. A boosting circuit comprising: a charge pump circuit; and a power supply circuit configured to supply a power supply voltage to said charge pump circuit, wherein said power supply circuit comprises: an N-channel transistor connected with a power supply terminal of said charge pump circuit; and a current control circuit comprising a resistance element, other than a wiring resistance, connected with a gate of said N-channel transistor through a node, and a capacitance element, other than the gate-source capacitance of said N-channel transistor, connected between said node and said power supply terminal, said current control circuit configured to control current flowing between said N-channel transistor and said charge pump circuit through said power supply terminal, wherein a gate-to-source voltage of said N-channel transistor is controlled by said resistance element and said capacitance element to be a voltage about equal to a threshold voltage of said N-channel transistor.