Patent ID: 7205827

Claim:
A low-dropout regulator comprising: a high-gain error amplifier having a differential input stage and a single-ended output a high-swing high-positive-gain second stage with input connecting to the output of the error amplifier and a single-ended output a p-type MOS transistor with gate terminal connecting to the output of the second stage, source terminal connecting to the supply voltage, and drain terminal to the output of the low-dropout regulator a first-order high-pass feedback network connecting to the output of the low-dropout regulator and the positive input of the error amplifier a damping-factor-control means comprising a negative gain stage with a feedback capacitor connecting between the input and output of this gain stage, a capacitor connecting between the output of the error amplifier and the output of the low-dropout regulator a voltage reference connecting to the negative input of the error amplifier.