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PDF LCP3121 Data sheet ( Hoja de datos )
| Número de pieza | LCP3121 | |
| Descripción | OVERVOLTAGE AND OVERCURRENT PROTECTION FOR TELECOM LINE | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LCP3121 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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® LCP3121
Application Specific Discretes
A.S.D.™
OVERVOLTAGE AND OVERCURRENT
PROTECTION FOR TELECOM LINE
FEATURES AND BENEFITS
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 :
t(sIPP = 100A for 10/1000 µs.
DESCRIPTION
ucDedicated to the protection of sensitive telecom
dequipment, the LCP3121 provides protection
rowhich can be programmed by both voltage and
Pcurrent.
teThe breakdown voltage can be easily programmed
by using an external zener diode.
leThe protection function programmed by the
ocurrent is achieved with the use of a resistor
bsbetween the gate and the cathode. The value of
the resistor will determine the level of the desired
Ocurrent before the triggering of the device.
) -A multiple protection mode is also performed when
t(susing several diodes providing each line interface
with an optimized protection level.
ucIf desired, a bidirectional protection function can
dbe achieved by the use of two LCP3121.
roCOMPLIES WITH THE FOLLOWING STANDARDS :
PCCITT K20 :
leteVDE 0433 :
soVDE 0878 :
ObFCC part 68 :
10/700µs
5/310µs
10/700µs
5/310µs
1.2/50µs
1/20µs
2/10µs
6kV
150A
2kV
50A
1.5kV
40A
2.5kV
SO-8
PIN-OUT CONFIGURATION
C1
8C
Gn 2
7A
Gp 3
6A
C4
5C
All cathod pins must be externally connected
FUNCTIONAL DIAGRAM
A
Gp
BELLCORE
2/10µs
200A (*)
Gn
TR-NWT-001089 : 2/10µs
2.5kV
2/10µs
200A (*)
BELLCORE
TR-NWT-000974 : 10/1000µs 1kV
10/1000µs 100A
(*) with series resistors or PTC.
C
TM: ASD is trademarks of STMicroelectronics.
April 2003 - Ed: 4
1/6
1 page  
APPLICATION EXAMPLES
Application 1: Common protection for SLIC
without integrated ring generator
LCP3121
Application 2: Common protection for SLIC with
integrated ring generator
4*SMBYW01-200
-Vbat
TIP
SLIC
RING
4*SMBYW01-200
-Vbat +Vbat
TIP
SLIC
L3000N
RING
-Vbat
-Vbat +Vbat
te Product(s)4*SMBYW01-200
TIP
SLIC
RING
Gn
CA
LCP3121
-Vbat
4*SMBYW01-200
+Vbat
Gp
CA
LCP3121
TIP
SLIC
L3000N
RING
Gn
CA
LCP3121
-Vbat
bsoleApplication 3: Typical SLIC protection
Obsolete Product(s) - O4*SMBYW01-200
LCP3121
AC
Gn
-Vbat
TIP
SLIC
Application 4: Protection programmed by current
for any application
IT
+
A
LCP3121
C
Gn
Protected
Circuit
-
Ra
IT = IG + VG
Ra
CURRENT TOLERANCE
-Vbat
RING
Ra IT
IT
Ω mA mA
(+/-5%)
min
max
4.7 202 603
5.6 182 538
6.8 164 479
8.2 150 431
10 137 388
12 128 358
5/6
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet LCP3121.PDF ] | |
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