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LCP3121 Folha de dados(PDF) 1 Page - STMicroelectronics

Nome de Peças LCP3121
Descrição Electrónicos  OVERVOLTAGE AND OVERCURRENT PROTECTION FOR TELECOM LINE
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

LCP3121 Folha de dados(HTML) 1 Page - STMicroelectronics

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Application Specific Discretes
A.S.D.™
LCP3121
OVERVOLTAGE AND OVERCURRENT
PROTECTION FOR TELECOM LINE
®
s
UNIDIRECTIONAL
OVERVOLTAGE
SUP-
PRESSOR PROGRAMMABLE BY VOLTAGE
AND CURRENT:
s
PROGRAMMABLE BREAKDOWN VOLTAGE
UP TO 100 V.
s
PROGRAMMABLE
CURRENT
LIMITATION
FROM 120 mA TO 600 mA.
s
MULTI-LINE PROTECTION MODE : ONE DE-
VICE CAN PROTECT SEVERAL LINES.
s
HIGH SURGE CURRENT CAPABILITY :
IPP = 100A for 10/1000
µs.
FEATURES AND BENEFITS
SO-8
Dedicated to the protection of sensitive telecom
equipment, the LCP3121 provides protection
which can be programmed by both voltage and
current.
The breakdown voltage can be easily programmed
by using an external zener diode.
The protection function programmed by the
current
is achieved with the use of a resistor
between the gate and the cathode. The value of
the resistor will determine the level of the desired
current before the triggering of the device.
A multiple protection mode is also performed when
using several diodes providing each line interface
with an optimized protection level.
If desired, a bidirectional protection function can
be achieved by the use of two LCP3121.
DESCRIPTION
April 2003 - Ed: 4
FUNCTIONAL DIAGRAM
A
Gp
C
Gn
CCITT K20 :
10/700
µs
6kV
5/310
µs
150A
VDE 0433 :
10/700
µs
2kV
5/310
µs
50A
VDE 0878 :
1.2/50
µs
1.5kV
1/20
µs
40A
FCC part 68 :
2/10
µs
2.5kV
2/10
µs
200A (*)
BELLCORE
TR-NWT-001089 :
2/10
µs
2.5kV
2/10
µs
200A (*)
BELLCORE
TR-NWT-000974 :
10/1000
µs
1kV
10/1000
µs
100A
(*) with series resistors or PTC.
COMPLIES WITH THE FOLLOWING STANDARDS :
PIN-OUT CONFIGURATION
1
2
3
4
5
6
7
8
C
Gn
Gp
A
A
C
C
C
All cathod pins must be externally connected
TM: ASD is trademarks of STMicroelectronics.


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