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Voltage regulator using a multi-power and gain-boosting technique and mobile devices including the same

  • US 9,933,799 B2
  • Filed: 09/21/2016
  • Issued: 04/03/2018
  • Est. Priority Date: 09/22/2015
  • Status: Active Grant
First Claim
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1. A voltage regulator, comprising:

  • an error amplifier configured to receive a first voltage through a first node as an operating voltage, to amplify a difference between a reference voltage and a feedback voltage, and to output an amplified voltage;

    a power transistor connected between a second node through which a second voltage is supplied and an output node; and

    a switch circuit configured to select a level of a gate voltage supplied to a gate of the power transistor and a level of a body voltage supplied to a body of the power transistor in response to a first power sequence of the first voltage, a second power sequence of the second voltage, and an operation control signal.

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