Regulator circuit, an electronic device including the regulator circuit, and a processor including the regulator circuit

A regulator circuit, comprising

• a feedback circuit connected between an output node and a ground node, and configured to output a feedback voltage;
• an error amplifier configured to output a first voltage by comparing the feedback voltage of the feedback circuit with a reference voltage and amplifying a difference between the feedback voltage and the reference voltage as the first voltage;
• a pass transistor connected between a power node for receiving a first driving voltage and the output node and including a gate connected to a first node from which the first voltage of the error amplifier is output;
• a precharge circuit connected to the first node, and configured to output a second voltage by using the first voltage;
• a first switch connected to a second node from which the second voltage of the precharge circuit is output;
• a second switch connected between the first node and the first switch;
• and
• a first capacitor connected between a connection node of the first switch and the second switch and the ground node,
• wherein the first switch and the second switch operate complementary to each other.

A processor, comprising:

• a clock generator including a regulator circuit configured to ooutput a regulated voltage based on a reference voltage and a feedback voltage and an oscillator configured to generate a clock signal based on a reference frequency signal and the reference voltage;
• and
• a plurality of cores each configured to operate based on the clock signal,
• wherein the regulator circuit includes:
• a precharge circuit configured to charge a first capacitor with a second voltage by using a first voltage, in response to a first signal,
• wherein the second voltage is based on a difference between the reference voltage and the feedback voltage, and
• wherein the first capacitor is connected to a first node of the regulator circuit, from which the first voltage is output, in response to a second signal.