Electrical-overstress protection circuit for an integrated...

Details Electrical-overstress protection circuit for an integrated... Electrical-overstress protection circuit for an integrated...

2010-02-23

2011-10-25

Barnie, Rexford (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

Reexamination Certificate

active

08045306

ABSTRACT:
An electrical-overstress (EOS) protection circuit for an electronic device includes series-connected resistors, a mode-control switch, and a bias circuit. The series-connected resistors are electrically coupled between an input and an output, and the mode-control switch is electrically coupled between the output and a ground. The bias circuit is electrically coupled to the input for generating a mode-control signal to control the mode-control switch. The bias circuit generates the mode-control signal in a way such that the mode-control switch is open in a normal mode and closed in an EOS mode.

REFERENCES:
patent: 4605980 (1986-08-01), Hartranft et al.
patent: 5877534 (1999-03-01), Williams et al.
patent: 2003/0076639 (2003-04-01), Chen
patent: 2004/0109270 (2004-06-01), Stockinger et al.

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