1/7
TPP25011
®
■
UNIDIRECTIONAL FUNCTION
■
PROGRAMMABLE BREAKDOWN VOLTAGE
UP TO 250 V
■
PROGRAMMABLE CURRENT LIMITATION
FROM 40 mA TO 500 mA
■
SURGE CURRENT CAPABILITY
I
PP
= 30A 10/1000 µs
FEATURES
SO-8
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.
DESCRIPTION
SCHEMATIC DIAGRAM
OVERVOLTAGE and OVERCURRENT
PROTECTION for TELECOM LINE
October 2003 - Ed: 5
Application Specific Discretes
A.S.D.™
TM: ASD is trademarks of STMicroelectronics.
CCITT K17 : 10/700 µs 1.5 kV
5/310 µs38A
VDE 0433 : 10/700 µs2kV
5/310 µs 40 A (*)
CNET : 0.5/700 µs 1.5 kV
0.2/310 µs38A
FCC part 68 : 2/10 µs 2.5 kV
2/10 µs 75 A (*)
BELLCORE
TR-NWT-000974 : 10/1000 µs1kV
10/1000 µs 30 A (*)
(*) with series resistors or PTC.
COMPLIES WITH THE FOLLOWING STANDARDS :
