參數(shù)資料
型號: LCP3121
廠商: 意法半導體
英文描述: OVERVOLTAGE AND OVERCURRENT PROTECTION FOR TELECOM LINE
中文描述: 過壓和過流保護的電信線路保護
文件頁數(shù): 4/6頁
文件大小: 53K
代理商: LCP3121
FUNCTIONAL HOLDINGCURRENT (I
H
) TESTCIRCUIT : GO-NOGO TEST
0.01
0.10
1
10
100
1000
0
2
4
6
8
10
12
14
16
18
20
I
TSM
(A)
t(s)
F=50Hz
°
c
Fig. 1 :
Maximum non repetitive surge peak-on-
state currentversusoverloadduration.
-40
-20
0
20
40
60
80
100
120
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Tj(
°
C)
IH [Tj] / IH [Tj=25
°
C]
Fig.2 :
Relativevariationof holdingcurrent versus
junctiontemperature(typicalvalues).
Thisis aGO-NOGOtestwhichallows to confirmtheholdingcurrent(I
H
) levelin a functionaltestcircuit.
TESTPROCEDURE:
- Adjustthecurrent levelat the I
H
valueby short circuiting the D.U.T.
- Firethe D.U.T.with a surgecurrent : I
PP
= 10A,10/1000
μ
s.
- TheD.U.T. will come backto theoff-statewithina durationof 50msmax.
R
Surge
generator
V
= -48 V
BAT
-V
P
D.U.T
LCP3121
4/6
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