Low dropout regulator with control loop for avoiding hard...

Details Low dropout regulator with control loop for avoiding hard... Low dropout regulator with control loop for avoiding hard...

2007-01-29

2008-11-18

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

07453244

ABSTRACT:
A hard saturation mode of operation can be avoided in an LDO regulator by providing an additional feedback control loop. The additional control loop cooperates with the LDO regulator's amplifier stage and output stage to maintain at least a minimum desired voltage drop across the output stage from the power supply to the load.

REFERENCES:
patent: 6310467 (2001-10-01), Sauer
patent: 6522122 (2003-02-01), Watanabe et al.
patent: 6603292 (2003-08-01), Schouten et al.
patent: 6700360 (2004-03-01), Biagi et al.
patent: 6703815 (2004-03-01), Biagi
patent: 7030677 (2006-04-01), Pannwitz
patent: 7170269 (2007-01-01), Doyle

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