G

0.6V

Reference

Comparator

OUT

CMP

OUT

RESET

V

IN-

V

IN+

INA200(G=20)

INA201(G=50)

INA202(G=100)

GND

V+

2

3

4

6

5

7

8

1

Shunt

Option3

Shunt

Option1

R

3

R

4

Supply

ToV

IN-

ToV

IN+

ToV

IN-

ToV

IN+

R

1

R

2

From

ShuntOption

1,2,or3

RESET

4.5Vto5.5V

Q

1

2N3904

Shunt

Option2

Load

ToV

IN-

ToV

IN+

NOTE:Q cascodesthecomparatoroutputtodriveahigh-sideFET(the2N3904shownisgoodupto60V).Theshuntcouldbelocatedin

1

anyoneofthethreelocationsshown.Thelatchingcapabilityshouldbeusedin shutdownapplicationstopreventoscillationatthetrippoint.

INA200

INA201

INA202

SBOS374C – NOVEMBER 2006 – REVISED OCTOBER 2010

www.ti.com

Figure 31. High-Side Switch Over-Current Shutdown

14

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