Integrated voltage regulator circuit with transient voltage prot

Details Integrated voltage regulator circuit with transient voltage prot Integrated voltage regulator circuit with transient voltage prot

1987-06-01

1988-06-14

Salce, Patrick R.

Electricity: power supply or regulation systems

Self-regulating

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

323315, 323281, 361111, G05F 326

Patent

active

047514639

ABSTRACT:
An integrated circuit voltage regulator is of the kind having a pass transistor connected collector-to-emitter between the input V.sub.CC conductor and the regulated-voltage output conductor, a current source circuit supplying a base bias current to the pass transistor and a voltage reference and feedback regulator circuit connected between the output voltage conductor and the base of the pass transistor. A protective circuit against high voltage transients adding to V.sub.CC voltage comprises a transistor connected collector-to-emitter between the pass-transistor base and ground has a resistor paralleling the base-emitter junction, which resistor is resistively coupled to the input V.sub.CC line to shunt away the pass-transistor bias current whenever the V.sub.CC voltage level exceeds a value just under the latch-back breakdown voltage of the pass transistor. A zener diode directly connected across the DC input voltage conduction renders the regulator even more tolerant of high voltage transients.

REFERENCES:
patent: 3426263 (1969-02-01), Hennigan et al.
patent: 3996498 (1976-12-01), Schade, Jr.
patent: 4612497 (1986-09-01), Ulmer
Widlar, "New Developments in IC Voltage Regulators", IEEE Journal of Solid-State Circuits, vol. sc-6, No. 1, Feb. 1971.
"Hazardous Areas", Electrical Review, vol. 205, No. 8, 8/31/79, p. 35.

Affiliated with

Also associated with

Rating

Integrated voltage regulator circuit with transient voltage prot does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-507015