TPP25011 查看數據表（PDF） - STMicroelectronics

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TPP25011

OVERVOLTAGE and OVERCURRENT PROTECTION for TELECOM LINE

STMicroelectronics 

®

Application Specific Discretes

A.S.D.™

TPP25011

OVERVOLTAGE and OVERCURRENT

PROTECTION for TELECOM LINE

FEATURES

s UNIDIRECTIONAL FUNCTION

s PROGRAMMABLE BREAKDOWN VOLTAGE

UP TO 250 V

s PROGRAMMABLE CURRENT LIMITATION

FROM 40 mA TO 500 mA

s SURGE CURRENT CAPABILITY

IPP = 30A 10/1000 µs

DESCRIPTION

Dedicated to sensitive telecom equipment protec-

tion, this device can provide both voltage and cur-

rent triggered protection with a very tight tolerance.

The breakdown voltage can be easily programmed

by using an external zener diode.

A multiple protection mode can be also performed

when using several zener diodes, providing to

each line interface an optimized protection level.

The current limiting function is achieved with the

use of a resistor between the gate and the cath-

ode. The value of the resistor will determine the

level of the desired current.

SO-8

SCHEMATIC DIAGRAM

COMPLIES WITH THE FOLLOWING STANDARDS :

CCITT K17 :

10/700 µs

5/310 µs

VDE 0433 :

10/700 µs

5/310 µs

CNET :

0.5/700 µs

0.2/310 µs

FCC part 68 :

2/10 µs

2/10 µs

BELLCORE

TR-NWT-000974 :

10/1000 µs

10/1000 µs

(*) with series resistors or PTC.

1.5 kV

38 A

2k V

40 A (*)

1.5 kV

38 A

2.5 kV

75 A (*)

1 kV

30 A (*)

TM: ASD is trademarks of STMicroelectronics.

October 2003 - Ed: 5

1/7

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