Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2006-03-08
2008-08-19
Tra, Quan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S539000, C327S541000, C327S543000, C323S273000
Reexamination Certificate
active
07414458
ABSTRACT:
A power gating circuit of a signal processing system includes a low dropout linear regulator, a control circuit, and an output circuit. The low dropout linear regulator includes a first transistor, an operational amplifier, a first resistor, a second resistor, and an output end. The output circuit includes a fourth transistor and a step-down circuit. The control circuit controls output voltage of the output circuit according to a control signal.
REFERENCES:
patent: 5319302 (1994-06-01), Koshikawa et al.
patent: 7230408 (2007-06-01), Vinn et al.
patent: 2002/0030538 (2002-03-01), Morishita
patent: 2003/0085693 (2003-05-01), Marty
Chang Yi-Hwa
Hsieh Shang-Chih
Wu Jeng-Huang
Faraday Technology Corp.
Hsu Winston
O'Toole Colleen
Tra Quan
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