Overcurrent detecting circuit and regulator having the same

Details Overcurrent detecting circuit and regulator having the same Overcurrent detecting circuit and regulator having the same

2005-01-19

2009-08-11

Paladini, Albert W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

C361S093900

Reexamination Certificate

active

07573689

ABSTRACT:
An overcurrent detection circuit that minimizes fluctuations in the overcurrent detection level when the input supply voltage or temperature fluctuates includes a monitor transistor having a control terminal and an output terminal which are connected to a control terminal and an output terminal respectively of an output transistor, an output current detection transistor having a control terminal to which a detection bias voltage is input, and an output terminal which is connected to an input terminal of the monitor transistor, a constant current source that generates a reference current, a reference transistor having a control terminal to which the detection bias voltage is input and an output terminal to which the reference current flows to the constant current source, and a comparison circuit that outputs an overcurrent detection signal by comparing the voltage of the output terminal of the output current detection transistor and the voltage of the output terminal of the reference transistor.

REFERENCES:
patent: 5159516 (1992-10-01), Fujihira
patent: 5646520 (1997-07-01), Frank et al.
patent: 5670867 (1997-09-01), Mitsuda
patent: 5973551 (1999-10-01), Mitsuda
patent: 6801419 (2004-10-01), Fukui
patent: 7411376 (2008-08-01), Zhang
patent: 2003/0122530 (2003-07-01), Hikita
patent: 2007/0139839 (2007-06-01), Yoshihara
patent: 0 881 769 (1998-11-01), None
patent: 05-076133 (1993-03-01), None
patent: 08-331757 (1996-12-01), None
patent: 09-167928 (1997-06-01), None
patent: 10-322185 (1998-12-01), None
International Search Report issued in the corresponding International Application No. PCT/JP2005/000605, mailed on Apr. 19, 2005.
Official communication issued in counterpart European Application No. 05703842.4, mailed on Dec. 19, 2007.

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