AN2064 datasheet(9/14 Pages) STMICROELECTRONICS

Part #	AN2064

Description	Compliance of series/parallel protections for Telecom CO

PDF	14 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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9 / 14 page

AN2064 - APPLICATION NOTE

9/14

Figure 8 shows the time current curves of the TCP fuse series. This figure is used to verify use of the

TCP1.25A with the SMP100MC-270. For the second level, the fuse has to blow before the TRISIL is dam-

aged, so to verify this point we must compare the ITSM points of the SMP100MC with the time current

points of the TCP1.25A. Please note that the ITSM points are given in peak values while the TCP curve is

given in rms values.

The comparison of TCP1.25A and SMP100MC datasheet values shows that this solution is convenient for

this application. The next section will refer to test performed on such a module.

Duration

.01s

.1s

10s

100s

TCP1.25A

42A

14.5A

5.5A

3.2A

2.3A(RMS)

SMP100MC

43.1A

17A

4.5A

3A(RMS)

Figure 8: TCP1.25A time current curve

AN2064 Datasheet(PDF) 9 Page - STMicroelectronics