LCP1511 Просмотр технического описания (PDF) - STMicroelectronics

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LCP1511

PROGRAMMABLE TRANSIENT VOLTAGE SUPPRESSOR FOR SLIC PROTECTION

STMicroelectronics 

FUNCTIONAL DESCRIPTION

LINE A

D1

P1

P2

D2

LINE B

LCP1511D

TIP

- VBAT

C

RING

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

-VBAT reference.

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.

Surge peak current versus overload duration.

ITS M(A)

10

9

8

7

6

5

4

3

2

1

0

1E-2

1E-1

t(s)

1E+0

1E+1

F=50H z

Tj initial=25°C

1E+2

1E+3

5/7

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