SOFT-START VOLTAGE REGULATOR CIRCUIT

A voltage regulator includes a soft-start circuit, an error amplifier, an output stage, a voltage divider, and a soft-start switch. The output stage is arranged to provide an output voltage from an input voltage and an error signal. The voltage divider is arranged to provide a feedback signal from the output voltage. The error amplifier is arranged to provide the error signal from a soft-start reference voltage and the feedback signal. The soft-start circuit is arranged to provide the soft-start reference voltage from a reference voltage. If the voltage regulator is enabled, the soft-start reference voltage ramps toward the reference voltage until the soft-start reference voltage reaches the reference voltage. The soft-start switch is coupled across the inputs of the error amplifier. If the voltage regulator is disabled, the soft-start switch is closed. Closing the soft-start switch causes the soft-start reference voltage to track the decaying output voltage during disable.