Semiconductor integrated circuit device having voltage regulatin

Details Semiconductor integrated circuit device having voltage regulatin Semiconductor integrated circuit device having voltage regulatin

1992-08-11

1994-06-07

Voeltz, Emanuel T.

Electricity: power supply or regulation systems

Output level responsive

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

323274, 323281, G05F 156

Patent

active

053193024

ABSTRACT:
A semiconductor integrated circuit device is equipped with an internal power source unit for distributing an internal power voltage level between component circuitries, and the internal power voltage level is regulated to a variable reference voltage level, wherein a first main voltage regulator regulates the variable reference voltage level to a primary reference voltage level before reaching a threshold voltage level; however, after the primary reference voltage level becomes lower than the threshold voltage level, a latching circuit supplies an activation signal to a second main voltage regulator, and the second main voltage regulator regulates the variable reference voltage level to a secondary reference voltage level so that the second main voltage regulator continuously controls the variable voltage level without any abrupt transition, thereby allowing the internal power source unit to adjust the internal power voltage level to an arbitrary point.

REFERENCES:
patent: 4585955 (1986-04-01), Uchida
patent: 4731574 (1988-03-01), Melbert
patent: 5077518 (1991-12-01), Han
patent: 5079497 (1992-01-01), Barbu et al.
patent: 5146152 (1992-09-01), Jin et al.
"Dual-Regulator Dual-Decoding-Trimmer DRAM Voltage Limiter For Burn-In Test", pp. 127-128, No Date.

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