raja.cedt
|
hi tosei, i have a question regarding u r ans. from gain point of view it doesn't matter whether pass transistor is working in sat or triode(as you said,provided ldo is heavyly loaded),but from supply noise point of view if it is triode it will pass most of the noise to output. correct me if i ma wrong. hi trashbox, the following paper might help you,they have implemented same idea(more or less using body terminal,but its prone to forward biasing)
36 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 33, NO. 1, JANUARY 1998 A Low-Voltage, Low Quiescent Current,Low Drop-Out Regulator Gabriel A. Rincon-Mora, Member, IEEE, and Phillip E. Allen, Fellow, IEEE
|