Application Specific Discretes

A.S.D.

™

L3100B

L3100B1

DIL 8

OVERVOLTAGE AND OVERCURRENT

PROTECTION FOR TELECOM LINE

UNIDIRECTIONAL FUNCTION

PROGRAMMABLE BREAKDOWN VOLTAGE

UP TO 265 V

PROGRAMMABLE CURRENT LIMITATION

FROM 50 mA TO 550 mA

HIGH SURGE CURRENT CAPABILITY

10/1000

µs

FEATURES

Dedicated

to

sensitive

telecom

equipment

protection, this device can provide both voltage

protection and current limitation with a very tight

tolerance.

Its high surge current capability makes the L3100B

a reliable protection device for very exposed

equipment, or when series resistors are very low.

The breakdown voltage can be easily programmed

by using an external zener diode.

A multiple protection mode can also be performed

when using several zener diodes, providing each

line interface with an optimized protection level.

The current limiting function is achieved with the

use of a resistor between the gate N and the

cathode. The value of the resistor will determine

the level of the desired current.

DESCRIPTION

CCITT K17 - K20

10/700

µs

1.5

kV

5/310

µs38

A

VDE 0433

10/700

µs2

kV

5/200

µs50

A

CNET

0.5/700

µs

1.5

kV

0.2/310

µs38

A

COMPLIESWITH THE FOLLOWING STANDARDS :

Gate N

Gate P

Cathode

Anode

SCHEMATIC DIAGRAM

1

2

3

4

5

6

7

8

Gate N

NC

Gate P

Cathode

Anode

Anode

Anode

Anode

CONNECTION DIAGRAM

®

TM: ASD is trademarks of SGS-THOMSON Microelectronics.

September 1998 Ed : 3A

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