Over-current protection in linear regulators

Details Over-current protection in linear regulators Over-current protection in linear regulators

2011-07-05

2011-07-05

Nguyen, Danny (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Voltage regulator protective circuits

C361S093900

Reexamination Certificate

active

07974049

ABSTRACT:
An integrated circuit radio transceiver and method therefor includes a linear regulator an output transistor for producing a current into an output node of the regulator wherein an amplification block is operable to produce a bias signal to a gate terminal of the output transistor to operably bias the output transistor to produce the current into the output node of the regulator. A current steering amplification block is operably disposed to steer current in/out of the gate of the output transistor (depending on device type) based upon the current being conducted through the output node of the regulator exceeding a specified threshold. The current steering amplification block further includes a current sinking element operably disposed to sink a specified amount of current to define the specified threshold.

REFERENCES:
patent: 5212616 (1993-05-01), Dhong et al.
patent: 6046577 (2000-04-01), Rincon-Mora et al.
patent: 6703813 (2004-03-01), Vladislav et al.
patent: 6977491 (2005-12-01), Caldwell et al.
patent: 7486936 (2009-02-01), Kappes et al.

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