Internal voltage generating circuit

Details Internal voltage generating circuit Internal voltage generating circuit

1997-03-28

1999-01-05

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327545, 327205, G05F 110, H03K 3037

Patent

active

058567569

ABSTRACT:
An internal voltage generating circuit for generating an internal voltage VINT from an input external voltage VEXT is provided to stabilize the internal voltage. When the external voltage VEXT is less than or equal to a first boundary voltage VT1 or a second boundary voltage VT2 (>VT1), a constant voltage VINTN independent on the external voltage VEXT, which is produced by a constant voltage generator is outputted therefrom. When the external voltage VEXT is greater than or equal to the first boundary voltage VT1 or the second boundary voltage VT2, a variable voltage (>VINTN) linearly increased with an increase in VEXT, which is produced by a variable voltage generator, is outputted therefrom. When a detecting means detects that the external voltage VEXT has been increased to VT2 or higher, the characteristic of the internal voltage is switched from a constant voltage characteristic to a variable voltage characteristic. On the other hand, when the detecting means detects that the external voltage VEXT has been reduced to VT1 or lower, the characteristic of the internal voltage is changed from the variable voltage characteristic to the constant voltage characteristic.

REFERENCES:
patent: 5321653 (1994-06-01), Suh et al.
patent: 5349559 (1994-09-01), Park et al.
patent: 5448199 (1995-09-01), Park

Affiliated with

Also associated with

Rating

Internal voltage generating circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Internal voltage generating circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internal voltage generating circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-865593