FUNCTIONAL DESCRIPTION

LINE A

LINE B

D

D

P

P

TIP

RING

1

1

2

2

C

LINE A PROTECTION :

– For positive surges versus GND, the diode D1

will conduct.

– For negative surges versus GND, the protection

device P1 will trigger at a voltage fixed by the

LINE B PROTECTION :

– For surges on line B, the operating mode is the

same, D2 or P2 is activated.

It is recommended to add a capacitor (C=220nF)

close to the gate of the LCP, in order to speed up

the triggering.

1E-2

1E-1

1E+0

1E+1

1E+2

1E+3

0

1

2

3

4

5

6

7

8

9

10

I

(A)

TS M

F=50H z

Tj initial=25

°C

t(s)

Surge peak current versus overload duration.

LCP1511D

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