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DYNAMIC CURRENT SINK FOR STABILIZING LOW DROPOUT LINEAR REGULATOR

  • US 20180120874A1
  • Filed: 12/26/2017
  • Published: 05/03/2018
  • Est. Priority Date: 08/07/2015
  • Status: Active Grant
First Claim
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1. A dynamic current sink for stabilizing an output voltage at an output node of an LDO (Low Dropout Linear Regulator), comprising:

  • a comparator, for comparing a first reference signal with a signal obtained from the LDO to generate a comparison result, wherein the comparison result indicates whether an overshoot output voltage related to the LDO occurs;

    a control circuit, coupled to the comparator, for generating a first control signal according to the comparison result; and

    a first transistor, coupled to the output node of the LDO, a reference voltage and the first control signal, for selectively connecting or disconnecting the output node of the LDO to the reference voltage according to the first control signal.

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