Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2007-03-07
2008-12-02
Laxton, Gary L (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S275000, C323S901000, C323S908000
Reexamination Certificate
active
07459891
ABSTRACT:
A low drop-out voltage regulator having soft-start. A low drop-out regulator circuit is provided having an input node, an output node, a power FET connected by a source and drain between the input node and the output node, and a feedback circuit having an output connected and providing a control signal to a gate of the power FET. A current limit circuit is configured to control the power FET to limit the current through it when the voltage across a controllable sense resistor connected to conduct a current representing the current through the power FET exceeds a predetermined limit value. At start-up, control unit provides a control signal to the controllable resistor to cause the resistance value of the controllable resistor to decrease incrementally in value at respective predetermined incremental times during a predetermined time interval.
REFERENCES:
patent: 6445167 (2002-09-01), Marty
patent: 6580257 (2003-06-01), Marty
patent: 6822428 (2004-11-01), Miyanaga et al.
patent: 7274176 (2007-09-01), Mihara
patent: 7397226 (2008-07-01), Mannama et al.
patent: 7402987 (2008-07-01), Lopata
Gabriel A. Ricin-Mora and Phillip E. Allen; A Low-Voltage, Low Quiescent Current, Low Drop-Out Regulator; IEEE Journal of Solid-State Circuits, vol. 33, No. 1, Jan. 1998.
Aksin Devrim Yilmaz
Al-Shyoukh Mohammad A.
Martins Marcus M
Brady III Wade J.
Franz Warren L.
Laxton Gary L
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
LandOfFree
Soft-start circuit and method for low-dropout voltage... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Soft-start circuit and method for low-dropout voltage..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft-start circuit and method for low-dropout voltage... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4042412