Power supply voltage lowering circuit used in semiconductor...

Details Power supply voltage lowering circuit used in semiconductor... Power supply voltage lowering circuit used in semiconductor...

2005-08-09

2005-08-09

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

C323S316000, C323S281000

Reexamination Certificate

active

06927558

ABSTRACT:
A reference voltage generating circuit generates reference voltage and outputs the thus generated reference voltage from an output terminal thereof. A voltage generating circuit lowers external power supply voltage according to the reference voltage supplied from the reference voltage generating circuit to output internal power supply voltage from an output terminal thereof. A transistor has a current path connected between a terminal to which the external power supply voltage is supplied and the output terminal of the voltage generating circuit or between the terminal to which the external power supply voltage is supplied and the output terminal of the reference voltage generating circuit and a gate supplied with constant voltage and has negative threshold voltage.

REFERENCES:
patent: 5563546 (1996-10-01), Tsukada
patent: 5783935 (1998-07-01), Kyung
patent: 2001-210076 (2001-08-01), None
patent: 2002-334577 (2002-11-01), None
patent: 2002-373490 (2002-12-01), None

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