Patent ID: 6765374
Filing Date: 2004-07-20
Classification: G05F

Abstract:
A low drop-out voltage regulator having an adaptive frequency compensation means, comprising:a regulated DC output terminal; an unregulated DC input terminal; an output section having an output capacitor and an output load, wherein said output load is connected from said regulated DC output terminal to the ground reference, and said output capacitor is connected in parallel to a said output load; an output pass element for supplying power to said output section, wherein said output pass element having a source is coupled to said unregulated DC input terminal, and said output pass element having a drain is connected to said regulated DC output terminal; a control circuit for controlling a gate of said output pass element; a stabilizing-zero resistor for generating a zero; wherein said stabilizing-zero resistor generates an additional equivalent series resistance (ESR); and a pole-zero tracking circuit for controlling a frequency of said zero.