Pumping circuit of semiconductor device

Details Pumping circuit of semiconductor device Pumping circuit of semiconductor device

2007-10-02

2007-10-02

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C363S060000

Reexamination Certificate

active

11046128

ABSTRACT:
A pumping circuit of a semiconductor device includes a power supply unit for supplying a power source voltage to a first node, a first transfer pump for transferring a first electric potential of the first node to a second node, a first pumping unit coupled to the first node for pumping the power source voltage applied to the first node, a first pump control unit for controlling a voltage applied to a gate of the first transfer pump, a second transfer pump for transferring a second electric potential of the second node to a high voltage output terminal, a second pumping unit coupled to the second node for selectively pumping the second electric potential of the second node, and a second pump control unit for controlling a voltage applied to a gate of the second transfer pump in response to the power source voltage level. If the power source voltage is higher than a predetermined voltage, the first pumping unit performs a pumping operation, and the second pumping unit performs only an on or off operation.

REFERENCES:
patent: 6160723 (2000-12-01), Liu
patent: 6373322 (2002-04-01), Kobayashi et al.
patent: 6456513 (2002-09-01), Saito
patent: 6693483 (2004-02-01), Deml et al.
patent: 6791212 (2004-09-01), Pulvirenti et al.
patent: 10-0264959 (2000-06-01), None
patent: 10-0353541 (2002-09-01), None
patent: 10-2003-0002508 (2003-01-01), None

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