Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-01-16
2009-06-30
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
C327S170000, C363S060000
Reexamination Certificate
active
07554385
ABSTRACT:
In a charge pump circuit, the slew rate at which a clock signal is fed to charge transfer transistors is changed according to the output voltage. This configuration helps alleviate rush currents at start-up without unduly lowering efficiency.
REFERENCES:
patent: 6744224 (2004-06-01), Ishii
patent: 7009857 (2006-03-01), Chen et al.
patent: 7224591 (2007-05-01), Kaishita et al.
patent: 7250810 (2007-07-01), Tsen et al.
patent: 7365585 (2008-04-01), Fort et al.
patent: 2008/0157843 (2008-07-01), Young
patent: 2005-057969 (2005-03-01), None
Donovan Lincoln
Englund Terry L
Fish & Richardson P.C.
Rohm & Co., Ltd.
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