Design and modelling of positive LDO voltage regulator

Abstract

In present study the total ionizing dose effects in a positive low-dropout linear voltage regulator IS-LS1-3.3V was investigated experimentally using the developed the X-ray research complex. It is established that the output voltage is changed slightly in all total ionizing dose intervals and voltage regulator preserves a functional state without failure. The analytical functional dependence of the output voltage on the total ionizing dose is determined. The circuit diagram and voltage regulator SPICE macromodel for circuit simulations taking into consideration total ionizing dose effects have been developed.