SGS Thomson Microelectronics LCP3121 Datasheet
LCP3121
ApplicationSpecific Discretes
A.S.D.
FEATURESAND BENEFITS
UNIDIRECTIONAL OVERVOLTAGE SUPPRESSOR PROGRAMMABLE BY VOLTAGE
ANDCURRENT:
PROGRAMMABLE BREAKDOWN VOLTAGE
UP TO100V.
PROGRAMMABLE CURRENT LIMITATION
FROM120mATO600mA.
MULTI-LINE PROTECTION MODE : ONE DEVICECANPROTECT SEVERALLINES.
HIGH SURGECURRENTCAPABILITY:
=100Afor 10/1000 µs.
I
PP
DESCRIPTION
Dedicated to the protection of sensitive telecom
equipment, the LCP3121 provides protection
which can be programmed by both voltage and
current.
Thebreakdownvoltagecanbe easilyprogrammed
by usingan externalzenerdiode.
Theprotectionfunctionprogrammedbythecurrent
is achievedwith the use of a resistorbetween the
gate andthe cathode.The value of the resistorwill
determine the level of the desired current before
the triggeringof thedevice.
A multipleprotectionmodeis alsoperformedwhen
using several diodesproviding each line interface
with an optimizedprotectionlevel.
If desired,abidirectionalprotectionfunctioncanbe
achievedby the use of twoLCP3121.
COMPLIESWITHTHEFOLLOWINGSTANDARDS:
CCITTK20 : 10/700µs 1kV
5/310µs 25A
VDE0433: 10/700µs 2kV
5/310µs 50A
VDE0878: 1.2/50µs 1.5kV
1/20µs 40A
FCCpart68 : 2/10µs 2.5kV
2/10µs 200A(*)
BELLCORE
TR-NWT-001089: 2/10µs 2.5kV
2/10µs 200A(*)
BELLCORE
TR-NWT-000974:
(*)with series resistors or PTC.
TM: ASD is trademarks of SGS-THOMSON Microelectronics.
September 1998 - Ed: 3
10/1000µs 1kV
10/1000µs 100A
OVERVOLTAGE AND OVERCURRENT
PROTECTION FOR TELECOM LINE
SO8
PIN-OUTCONFIGURATION
1
C
Gn
2
Gp
3
C
4
Allcathodpins must be externallyconnected
FUNCTIONAL DIAGRAM
A
Gp
Gn
C
C
8
7
A
6
A
C
5
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LCP3121
ABSOLUTE MAXIMUM RATINGS(T
amb
=25°C)
Symbol Parameter Value Unit
I
PP
I
TSM
V
V
T
T
T
Note 1 : Pulse waveform :
Peakpulse current(see note 1) 10/1000µs 100 A
Nonrepetitivesurgepeakon-statecurrent
(F= 50Hz)
MaximumvoltagebetweenA andC
AC
MaximumvoltagebetweenG (Gnor Gp)and A
GA
Storagetemperaturerange
stg
Maximumjunction temperature
j
Maximumleadtemperaturefor soldering during10s 260 °C
L
10/1000µst
=10µst
r
=1000µs
p
tp= 10ms
t=1s
%I
PP
100
50
0
16
8
100
80
- 40 to + 150
150
t
t
p
r
t
A
V
°C
THERMALRESISTANCE
Symbol Parameter Value Unit
R
th (j-a)
ELECTRICALCHARACTERISTICS(T
Junctionto ambient 170 °C/W
=25°C)
amb
Symbol Parameter
V
V
V
I
I
I
V
C
V
I
I
Stand-offvoltage
RM
Breakdownvoltage
BR
Breakovervoltage
BO
Holdingcurrent
I
H
Breakovercurrent
BO
Leakagecurrentat V
RM
I
Leakagecurrentat V
R
Peakpulse current
PP
Continuousreversevoltage
R
Off-statecapacitance
off
Gatevoltage
G
Gptriggeringcurrent
GP
Gntriggeringcurrent
GN
RM
R
I
PP
I
BO
I
H
V
R
I
RM
V
V
BR
I
R
RM
V
BO
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