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This paper presents a novel circuit implementation for overcurrent protection of low-dropout voltage regulators, that is able to limit the maximum current the regulator can source into the load to a value set by the user and to keep the current limit value fairly independent of process variation and output voltage, as well as maintaining its temperature drift over the wide temperature range of −50°C...
A low drop-out (LDO) voltage regulator with high power supply rejection ratio (PSRR) and enhanced transient response is presented in this study. The proposed idea is to apply a replica circuit that injects current into the second stage of the error amplifier. The LDO is being fabricated in Magna Chips CMOS Technology. The regulated output voltage of the LDO is 1V with the power supply voltage of 1...
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