Electricity: electrical systems and devices – Safety and protection of systems and devices – Voltage regulator protective circuits
Patent
1986-03-10
1989-11-28
Deboer, Todd E.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Voltage regulator protective circuits
361 91, 361111, 323276, 323313, H02H 902, H02H 320
Patent
active
048841617
ABSTRACT:
A monolithic integrated circuit voltage regulator is disclosed in which a bipolar series pass transistor has both its collector and base electrodes protected from excessive positive and negative supply transients. Protection from positive voltage transients is provided by a reverse biased diode. Protection against negative voltage transients is provided by a bipolar transistor of opposite conductivity type from the pass transistor and a resistor in series therewith. The resistor is a diffused resistor comprising P-type material in an electrically isolated N-type well, resulting in blockage of negative voltage transients by both the transistor and the resistor.
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Atherton James H.
Stanojevic Silvo
Deboer Todd E.
Honeywell Inc.
Rubow Charles L.
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