Constant voltage regulator

A voltage regulator that converts an input voltage input to an input terminal thereof into a regulated, output voltage output to an output terminal thereof, the voltage regulator comprising:

• a driver transistor connected between the input and output terminals to conduct a current therethrough according to a control signal applied to a gate terminal thereof;
• a feedback voltage generator connected to the output terminal to generate a feedback voltage proportional to the output voltage;
• a reference voltage generator to generate a reference voltage for comparison with the feedback voltage;
• a first differential amplifier having an output thereof connected to the gate terminal of the driver transistor, and a pair of differential inputs thereof connected to the feedback voltage generator and the reference voltage generator, respectively, to generate the control signal at the output thereof by amplifying a difference between the feedback voltage and the reference voltage with a variable differential gain;
• and
• a differential gain controller connected to the output of the first differential amplifier to control the differential gain according to a difference between the input and output voltages.