Semiconductor device with a negative voltage regulator

Details Semiconductor device with a negative voltage regulator Semiconductor device with a negative voltage regulator

2006-03-21

2006-03-21

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

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

C323S313000, C365S185230, C365S185330

Reexamination Certificate

active

07015684

ABSTRACT:
A semiconductor device includes a negative voltage regulator capable of regulating a negative input voltage and outputting a negative output voltage. The negative voltage regulator has a driver for adjusting the negative output voltage, a first operational amplifier for outputting a driving voltage for controlling a current on a first transistor included in the driver according to a feedback voltage and a reference voltage, a second operational amplifier for outputting a driving voltage for controlling a current of a second transistor, a current source circuit having two triple-well NMOS transistors for providing the driver a current, and a voltage potential divider for generating the feedback voltage by dividing potentials of a voltage source and the negative output voltage and outputting the feedback voltage to the first operational amplifier and the second operational amplifier for adjusting the currents of the first and second transistors thereby regulating the negative output voltage.

REFERENCES:
patent: 6009022 (1999-12-01), Lee et al.
patent: 6438041 (2002-08-01), Yamada et al.
patent: 6600692 (2003-07-01), Tanzawa
patent: 6888340 (2005-05-01), Chen
patent: 6903599 (2005-06-01), Chen et al.

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