Semiconductor integrated circuit including charge pump circuit

Details Semiconductor integrated circuit including charge pump circuit Semiconductor integrated circuit including charge pump circuit

2007-07-03

2009-10-20

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S537000

Reexamination Certificate

active

07605638

ABSTRACT:
A semiconductor integrated circuit that suppresses steep changes of an output voltage when starting of a charge pump circuit to suppress transient displacement of output of a circuit block operating independently of the charge pump circuit is provided.A semiconductor integrated circuit has: a charge pump circuit which charges a first capacitor with an input voltage, transfers a charge accumulated in the first capacitor to a second capacitor, outputs, as an output voltage, a voltage of the second capacitor, and is capable of changing over a capability of charging the second capacitor; a first circuit block that receives a positive voltage and a grounding potential; and a second circuit block that receives the positive voltage and the output voltage of the charge pump. The semiconductor integrated circuit suppresses the charging capability by the charge pump circuit when starting of the charge pump circuit.

REFERENCES:
patent: 6483377 (2002-11-01), White et al.
patent: 7323914 (2008-01-01), Hashimoto
patent: 2002/0075705 (2002-06-01), Bayer et al.
patent: 2005/0046464 (2005-03-01), Kobayashi et al.
patent: 2007/0024347 (2007-02-01), Nagasawa et al.
patent: 2005-79828 (2005-03-01), None
patent: 2007-37370 (2007-02-01), None

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