LCP1511D Datasheet, PDF (1/7 Pages) STMicroelectronics – PROGRAMMABLE TRANSIENT VOLTAGE SUPPRESSOR FOR SLIC PROTECTION

®
Application Specific Discretes
A.S.D.™
LCP1511D
PROGRAMMABLE TRANSIENT VOLTAGE
SUPPRESSOR FOR SLIC PROTECTION
FEATURES
DUAL PROGRAMMABLE TRANSIENT SUP-
PRESSOR.
WIDE NEGATIVE FIRING VOLTAGE RANGE :
VMGL = -80V max.
LOW DYNAMIC SWITCHING VOLTAGES :
VFP and VDGL.
LOW GATE TRIGGERING CURRENT :
IGT = 5mA max.
PEAK PULSE CURRENT :
I_PP = 30A for 10/1000µs surge.
HOLDING CURRENT :
IH = 150mA.
DESCRIPTION
This device has been especially designed to pro-
tect subscriber line card interfaces (SLIC) against
transient overvoltages.
Positive overloads are clipped with 2 diodes.
Negative surges are suppressed by 2 thyristors,
their breakdown voltage being referenced to
-V_BAT through the gate.
This component presents a very low gate trigge-
ring current (IGT) in order to reduce the current con-
sumption on printed circuit board during the firing
phase.
A particular attention has beengiven to the internal
wire bonding. The ”4-point” configuration ensures
reliable protection, eliminating the overvoltage in-
troduced by the parasitic inductances of the wiring
(Ldi/dt), especially for very fast transients.
COMPLIESWITHTHE FOLLOWINGSTANDARDS :
CCITT K20 :
10/700µs
5/310µs
VDE 0433 :
10/700µs
5/310µs
VDE 0878 :
1.2/50µs
1/20µs
I3124 :
0.5/700µs
0.2/310µs
FCC part 68 :
2/10µs
2/10µs
BELLCORE
TR-NWT-001089 : 2/10µs
2/10µs
(*) with series resistors or PTC.
1kV
25A
2kV
38A (*)
1.5kV
40A
1kV
25A
2.5kV
170A (*)
2.5kV
170A (*)
February 1998 Ed: 3
SO8
SCHEMATIC DIAGRAM
TIP 1
GATE ₂
NC ₃
RING ₄
8 TIP
7 ^GND
6 ^GND
5 RING
TM: ASD is trademarks of SGS-THOMSON Microelectronics.
1/7