Voltage Supervisors | MC3423

Overvoltage Crowbar Sensing Circuit with Adjustable Threshold Voltage

Obsolete

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Overview

This overvoltage protection circuit (OVP) protects sensitive electronic circuitry from overvoltage transients or regulator failures when used in conjunction with an external "crowbar" SCR. The device senses the overvoltage condition and quickly "crowbars" or short circuits the supply, forcing the supply into current limiting or opening the fuse or circuit breaker.

The protection voltage threshold is adjustable and the MC3423 can be programmed for minimum duration of overvoltage condition before tripping, thus supplying noise immunity.

The MC3423 is essentially a "two terminal" system, therefore it can be used with either positive or negative supplies.

  • Pb-Free Packages are Available

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CAD Models

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Reference Price

MC3423D

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

235

TUBE

98

N

1

40

2.6

-

-

No

No

No

Price N/A

More Details

MC3423DG

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

TUBE

98

N

1

40

2.6

-

-

No

No

No

Price N/A

More Details

MC3423DR2

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

235

REEL

2500

N

1

40

2.6

-

-

No

No

No

Price N/A

More Details

MC3423DR2G

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

751-07

1

260

REEL

2500

N

1

40

2.6

-

-

No

No

No

Price N/A

More Details

MC3423P1

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Obsolete

CAD Model

Pb

A

H

P

PDIP-8

626-05

NA

0

TUBE

50

N

1

40

2.6

-

-

No

No

No

Price N/A

More Details

MC3423P1G

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Obsolete

CAD Model

Pb

A

H

P

PDIP-8

626-05

NA

0

TUBE

50

N

1

40

2.6

-

-

No

No

No

Price N/A

More Details

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