TISPPBL2SD
PROGRAMMABLE OVERVOLTAGE PROTECTORS
FOR ERICSSON COMPONENTS PBL 3xxx SLICS
Copyright © 1999, Power Innovations Limited, UK
AUGUST 1999
OVERVOLTAGE PROTECTION FOR ERICSSON COMPONENTS LINE INTERFACE CIRCUITS
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Overvoltage Protector‡ for:-
PBL 3762A
PBL 3764A/4, PBL 3764A/6
PBL 3766, PBL 3766/6
PBL 3767, PBL 3767/6
PBL 3796, PBL 3796/2
PBL 3798, PBL 3798/2
PBL 3798/5
PBL 3798/6
PBL 3799
PBL 3860A/1, PBL 3860A/6
PBL 386 10/2
PBL 386 11/2
PBL 386 20/1
PBL 386 21/1
PBL 386 30/1
PBL 386 40/1
PBL 386 50/1
PBL 3898/M
(Tip)
K1
NC
(Ring) K2
D PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
NC
A
A
NC
MD6XBA
(Gate) G
(Ground)
(Ground)
NC - No internal connection
Terminal typical application names shown in
parenthesis
device symbol
K1
A
G1,G2
A
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Rated for International Surge Wave Shapes
WAVE SHAPE
2/10 µs
1.2/50 µs
0.5/700 µs
10/700 µs
10/1000 µs
STANDARD
GR-1089-CORE
ITU-T K22
I3124
ITU-T K20, K21
GR-1089-CORE
I
TSP
A
100
100
40
40
30
K2
Terminals K1, K2 and A correspond to the alternative
line designators of T, R and G or A, B and C. The
negative protection voltage is controlled by the
voltage, V
GG,
applied to the G terminal.
SD6XAP
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Small Outline Surface Mount Package
- Available Ordering Options
CARRIER
Tube
Taped and reeled
ORDER #
TISPPBL2SD
TISPPBL2SDR
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Single-Lead Line Connection Version of
Feed-Through TISPPBL2D
- Ground Lead Creepage Distance . . > 3 mm
description
The TISPPBL2S is a dual forward-conducting buffered p-gate overvoltage protector. It is designed to protect
the Ericsson Components PBL 3xxx family of SLICs (Subscriber Line Interface Circuits) against overvoltages
on the telephone line caused by lightning, a.c. power contact and induction. The TISPPBL2S limits voltages
that exceed the SLIC supply rail levels.
The SLIC line driver section is typically powered from 0 V (ground) and a negative voltage in the region of
-10 V to -85 V. The protector gate is connected to this negative supply. This references the protection
(clipping) voltage to the negative supply voltage. As the protection voltage will track the negative supply
voltage the overvoltage stress on the SLIC is minimised.
Positive overvoltages are clipped to ground by diode forward conduction. Negative overvoltages are initially
clipped close to the SLIC negative supply rail value. If sufficient current is available from the overvoltage, then
the protector will crowbar into a low voltage ground referenced on-state condition. As the overvoltage
‡ Customers are advised to obtain the latest version of the relevant Ericsson Components SLIC information to verify, before placing orders, that
the information being relied on is current.
PRODUCT
INFORMATION
1
Information is current as of publication date. Products conform to specifications in accordance
with the terms of Power Innovations standard warranty. Production processing does not
necessarily include testing of all parameters.
POINN [ POWER INNOVATIONS LTD ]
