Circuit for generating internal voltage

Details Circuit for generating internal voltage Circuit for generating internal voltage

2006-11-28

2006-11-28

Patel, Rajnikant B. (Department: 2838)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S535000, C323S280000

Reexamination Certificate

active

07142045

ABSTRACT:
There is provided an internal voltage generating circuit that reliably supplies a constant internal voltage to the interior of a semiconductor device without regard to an external voltage, where the internal voltage generating circuit compares a first reference voltage with a first internal voltage fed back to generate the first internal voltage following the first reference voltage, receives the first internal voltage to generate a second reference voltage which is more insensitive to fluctuation of the external voltage than the first reference voltage, and compares the second reference voltage with a second internal voltage fed back to generate the second internal voltage which follows the second reference voltage and has a variation gradient smaller than that of the first internal voltage when the external voltage is changed, thereby supplying the second internal voltage to a circuit requiring stabilized internal voltage, which is obtained to increase stability and durability of the operation of the semiconductor device.

REFERENCES:
patent: 5554953 (1996-09-01), Shibayama et al.
patent: 5841271 (1998-11-01), Nakayama
patent: 5889415 (1999-03-01), Parkinson
patent: 6384672 (2002-05-01), Oh
patent: 6809576 (2004-10-01), Yamasaki
patent: 6946876 (2005-09-01), Isezaki et al.

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