Voltage regulator and control method thereof

A voltage regulator, adapted to dynamically adjust an output voltage from a first output end of the voltage regulator, and comprising:

• a plurality of switching transistors, wherein each of the plurality of switching transistor has a first end, a second end, and a control end, the first ends receive a driving voltage, the second ends are electrically connected with the first output end, and the switching transistor is configured to adjust the output voltage;
• and
• a control circuit, comprising an input end, a feedback end, and a plurality of second output ends, wherein the input end receives a reference voltage, the feedback end receives the output voltage, the second output ends are electrically connected with the control ends of the switching transistors respectively, and the control circuit is configured to compare the output voltage with the reference voltage, and selectively turn on or off the plurality of switching transistors according to the comparison between the output voltage and the reference voltage so that the output voltage approaches the reference voltage.