Fast low drop out (LDO) PFET regulator circuit

Details Fast low drop out (LDO) PFET regulator circuit Fast low drop out (LDO) PFET regulator circuit

2006-08-22

2006-08-22

Riley, Shawn (Department: 2838)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C323S314000

Reexamination Certificate

active

07095257

ABSTRACT:
A low dropout (LDO) PFET regulator circuit is disclosed for operating in two modes of operation. For higher supply voltage potentials the LDO PFET regulator circuit operates normally, as supply voltage potential drops, the LDO PFET regulator operates in a second mode of operation where a decision circuit determines whether to supply a first boost current thereto in order to compensate for the reduced transimpedance of the first PFET.

REFERENCES:
patent: 6066979 (2000-05-01), Adams et al.
patent: 6285246 (2001-09-01), Basu
patent: 6501305 (2002-12-01), Rincon-Mora et al.
patent: 6703813 (2004-03-01), Vladislav et al.
patent: 6703815 (2004-03-01), Biagi
patent: 1 376 294 (2004-01-01), None
Trauth, Vanhuffel, Trichet, “An Advanced Controller for Multi-Band Open Loop Power Control Mode RF Power Amplifier”, Microwave Engineering, Jul. 2002, pp. 39-40.

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