Power sequencing with logic enabled regulator

Details Power sequencing with logic enabled regulator Power sequencing with logic enabled regulator

2011-03-29

2011-03-29

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S142000, C327S198000

Reexamination Certificate

active

07915931

ABSTRACT:
A power sequencing circuit includes a PNP transistor, a first, second and third resistor, and a logic enabled regulator. A voltage is coupled at a first node to the emitter of the transistor, the first resistor is coupled between the first node and the base of the transistor, the second resistor is coupled between the base and a grounded node, the third resistor is coupled between the grounded node and the collector of the transistor, and the logic enabled regulator has an enable pin coupled to and driven by the collector.

REFERENCES:
patent: 3703648 (1972-11-01), Wrabel
patent: 4246634 (1981-01-01), Purol
patent: 4642746 (1987-02-01), Losel
patent: 5834964 (1998-11-01), Scheraga
patent: 7256778 (2007-08-01), Choi
patent: 2004/0251883 (2004-12-01), Brosh et al.
patent: 2007/0103948 (2007-05-01), Patchornik

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