Semiconductor device performing overheat protection efficiently

Details Semiconductor device performing overheat protection efficiently Semiconductor device performing overheat protection efficiently

2008-02-14

2010-10-05

Nguyen, Danny (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

C361S093800

Reexamination Certificate

active

07808762

ABSTRACT:
A semiconductor device includes a constant voltage circuit configured to convert an input voltage to a predetermined voltage by controlling an output transistor, and an overheat protection circuit configured to restrict output current of the constant voltage circuit according to temperature of the semiconductor device. The overheat protection circuit includes a diode to detect the temperature of the semiconductor device and a resistor connected in series with the diode.

REFERENCES:
patent: 5119265 (1992-06-01), Qualich et al.
patent: 2005/0264971 (2005-12-01), Morino
patent: 2005-100295 (2005-04-01), None

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