Patent ID: 7106033
Filing Date: 2006-09-12
Classification: G05F

Abstract:
1. A quick-recovery low dropout linear regulator, having a low dropout linear regulator circuit with a gained-amplification unitary Miller compensation capacitor, wherein said low dropout linear regulator circuit has a 2nd stage amplifier and an output current for the use of the load, comprising: a current-detection circuit, wherein the current-detection circuit is used to detect the magnitude of the output current of the low dropout linear regulator to output a comparison current; a comparator circuit, wherein the comparator circuit compares a comparison current and a fixed reference current to generate a comparison signal; a control element, wherein the control element is controlled by the comparison signal and outputs a control signal; a voltage-pumping circuit, wherein the voltage-pumping circuit is used to change bias current of the 2nd stage amplifier and receives the control signal of the control element to adjust the bias current of said 2nd stage amplifier; if the comparison current is greater than the reference current, the comparator circuit outputs the comparison signal to control the voltage-pumping circuit to increase the bias current of the 2nd stage amplifier.