Over-current protection in linear regulators

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

2005-10-07

2009-02-03

Pham, Tuan A (Department: 2618)

Telecommunications

Transmitter and receiver at same station

C455S127100, C455S127200, C455S127500, C330S264000, C330S267000, C330S268000, C327S321000, C327S322000, C327S563000

Reexamination Certificate

active

07486936

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: 2004/0003301 (2004-01-01), Nguyen
patent: 2004/0178778 (2004-09-01), Bansal
patent: 2004/0198301 (2004-10-01), Rozenblit et al.

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