TI TCM1030P

TCM1030, TCM1050
DUAL TRANSIENT-VOLTAGE SUPPRESSORS
SCTS040B – JUNE 1989 – REVISED JUNE 1997
D
D
D
D
D
D
Meet or Exceed Bell Standard LSSGR
Requirements
Externally-Controlled Negative Firing
Voltage . . . – 90 V Max
Accurately Controlled, Wide Negative
Firing Voltage Range . . . – 5 V to – 85 V
Positive Surge Current (see Note 1):
TCM1030
TCM1050
10/1000
16 A
30 A
10/160
25 A
45 A
2/10
35 A
50 A
Negative Surge Current (see Note 1):
TCM1030
TCM1050
10/1000
– 16 A
– 25 A
10/160
– 25 A
– 29 A
2/10
– 35 A
– 36 A
High Holding Current
– TCM1030 . . . 100 mA Min
– TCM1050 . . . 150 mA Min
D OR P PACKAGE
(TOP VIEW)
TIP
VS
NC
RING
1
8
2
7
3
6
4
5
TIP
GND
GND
RING
NC – No internal connection
The D package is available taped and
reeled. Add R suffix (i.e., TCM1030DR).
description
The TCM1030 and TCM1050 dual transient-voltage suppressors are designed specifically for telephone line
card protection against lightning and transients (voltage transients) induced by ac lines. One of the TIP terminals
(pin 1 or 8) and one of the RING terminals (pin 4 or 5) are connected to the tip and ring circuits of a SLIC
(subscriber-line interface circuit). The battery feed connections between the SLIC and the subscriber line are
from the remaining TIP (pin 1 or 8) and RING (pin 4 or 5) through the TCM1030 or the TCM1050 to the tip and
ring lines. Transients are suppressed between tip and ground, and ring and ground.
Positive transients are clamped by diodes D1 and D2. Negative transients that are more negative than VS cause
the SCRs, Q1 and Q2, to crowbar. The high holding current of the SCRs prevent dc latchup as the transient
subsides.
The TCM1030 and TCM1050 are characterized for operation from – 40°C to 85°C.
NOTE 1: The notation 10/1000 refers to a waveshape having tr = 10 µs and tw = 1000 µs ending at 50% of the peak value. The notation 10/160
is tr = 10 µs and tw = 160 µs. The notation 2/10 is tr = 2 µs and tw = 10 µs.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright  1997, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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1
TCM1030, TCM1050
DUAL TRANSIENT-VOLTAGE SUPPRESSORS
SCTS040B – JUNE 1989 – REVISED JUNE 1997
functional block diagram
TIP
1
8
D1
Trip
Circuit
Q1
7
VS
TIP
GND
2
6
Trip
Circuit
GND
Q2
D2
RING
4
5
RING
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
TCM1030 nonrepetitive peak surge current (see Note 1): 10/1000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 16 A
10/160 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 25 A
2/10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 35 A
TCM1050 nonrepetitive peak positive surge current:
10/1000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 A
(see Note 1)
10/160 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 A
2/10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 A
TCM1050 nonrepetitive peak negative surge current:
10/1000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 25 A
(see Note 1)
10/160 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 29 A
2/10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 36 A
Nonrepetitive peak surge current, tw = 10 ms, half sinewave (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . 5 A
Continuous 60-Hz sinewave at 1 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 s
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D or P package . . . . . . . . . . . . . . . . . 260°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1 The notation 10/1000 refers to a waveshape having tr = 10 µs and tw = 1000 µs ending at 50% of the peak value. The notation 10/160
is tr = 10 µs and tw = 160 µs. The notation 2/10 is tr = 2 µs and tw = 10 µs.
2. This value applies when the case temperature is at or below 85°C. The surge current may be repeated after the device has returned
to thermal equilibrium.
DISSIPATION RATING TABLE
PACKAGE
2
TA ≤ 25°C
POWER RATING
OPERATING FACTOR
ABOVE TA = 25°C
TA = 85°C
POWER RATING
D
725 mW
5.8 mW/°C
377 mW
P
1000 mW
8.0 mW/°C
520 mW
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TCM1030, TCM1050
DUAL TRANSIENT-VOLTAGE SUPPRESSORS
SCTS040B – JUNE 1989 – REVISED JUNE 1997
electrical characteristics over operating free-air temperature range (unless otherwise noted)
PARAMETER
VCF
VC(R)
II(trip)
IH
VI(trip)
( )
II(stby)
Forward clamping voltage
(diode forward voltage) (see
Note 3)
Reverse clamping voltage
(SCR on-state
on state voltage) (see
Note 3)
Trip current (see Note 4)
TEST CONDITIONS
2
1.2
2
4
2
4
IFM = 16-A transient
IFM = 30-A transient
4
5
2.5
5
dv/dt
Critical rate of rise of off-state
voltage (see Note 5)
—
ITM = 1-A transient
ITM = 10-A transient
ITM = 16-A transient
ITM = 30-A transient
Trip voltage
Coff
ff
TCM1050
TYP†
MAX
2.5
VS = – 50 V,
VS = – 65 V,
Off-state ((high
g impedance))
capacitance
MIN
1.2
VS = – 50 V
VS = – 50 V
Transient overshoot voltage
TCM1030
TYP†
MAX
IFM = 1-A transient
IFM = 10-A transient
Holding current
Standby current
MIN
—
—
—
3.1
5
–1.2
–2
–1.2
–2
– 2.5
–4
– 2.5
–4
–4
–5
–3
–5
—
—
– 4.8
–7
– 100
– 325
– 100
I = trip current
– 50
I = trip current
– 65
VS = – 85 V, I = trip current
TIP and RING at – 85 V or GND,
VS = – 85 V
—
– 100
– 325
– 150
—
V
V
mA
mA
– 55
– 50
– 55
– 70
– 65
– 70
—
– 85
– 90
±5
±5
VS = – 50 V, tr = 10 ns
TIP and RING at – 50 V
2.5
2.5
25
25
TIP and RING at GND
50
50
VS open,
–1
–1
VS = – 50 V
UNIT
V
µA
V
pF
kV/µs
† All typical values are at TA = 25°C.
NOTES: 3. The current flows through one TIP (or RING) terminal and one of the GND terminals. The voltage is measured between the other
TIP (or RING) terminal and the other GND terminal. Measurement time ≤ 1 ms.
4. The negative value of trip current refers to the current flowing out of TIP or RING on the line side that is sufficient in magnitude to
trigger the SCRs. Measurement time ≤ 1 ns.
5. The critical dv/dt is measured using a linear rate of rise with the maximum voltage limited to – 50 V with VS connected to TIP or RING
being measured.
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3
TCM1030, TCM1050
DUAL TRANSIENT-VOLTAGE SUPPRESSORS
SCTS040B – JUNE 1989 – REVISED JUNE 1997
TYPICAL CHARACTERISTICS
TIP OR RING CURRENT
vs
TIP OR RING TO GND VOLTAGE
0.5
0.4
VS = – 48 V
TA = 25°C
TIP or RING Current – A
0.3
0.2
0.1
0
– 0.1
– 0.2
– 0.3
– 0.4
– 0.5
– 50 – 40 – 30 – 20 – 10
0
10
20
30
40
50
Tip or Ring to GND Voltage – V
Figure 1
APPLICATION INFORMATION
The trip voltage represents the most negative level of stress applied to the system. Positive transients are
clamped by diodes D1 and D2. When a negative transient is applied, current flows from VS to TIP or RING where
the transient voltage is applied. When the current through TIP or RING reaches the pulse-trip current, the SCR
turns on and shorts TIP or RING to GND. The majority of the transient energy is dissipated in the external resistor
(nominally 100 Ω for the TCM1030 and 70 Ω for the TCM1050). Current into VS ceases when the SCR turns
on. When the energy of the transient has been dissipated so that the current into TIP or RING due to the transient
plus the battery feed supply is less than the holding current, the SCR turns off.
To help ensure reliability and consistency in the firing voltage, it is recommended that two capacitors be
connected between VS and GND, as close to the device terminals as possible. One capacitor should be a 0.1-µF,
100-V ceramic unit and the other, a 0.47-µF, 100-V stacked-film (not wound) metalized plastic capacitor. If
inductance is present in the line to VS, these capacitors help prevent overshoot in the firing voltage during fast
rise-time transients.
To avoid dc latchup after the SCR has fired, the current must be less than the holding current, IH. To prevent
dc latchup, the line feed current must be limited to the following conditions:
* VRP t I
R
) 2Rp H
line
V
TP
where VTP and VRP are the voltages on TIP and RING, respectively, of the TCM1030 or TCM1050. Induced ac
currents into TIP or RING (e.g., power-line inductive coupling) must be less than the trip current to prevent the
SCR from firing.
4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TCM1030, TCM1050
DUAL TRANSIENT-VOLTAGE SUPPRESSORS
SCTS040B – JUNE 1989 – REVISED JUNE 1997
APPLICATION INFORMATION
Line short-circuits to external power sources can damage the suppressor due to excessive power dissipation.
Conventional protection techniques, such as fuses or PTC (positive temperature coefficient) thermistors, should
be used to eliminate or reduce the fault current.
Figure 2 shows a typical line card application circuit.
T
Control
Receive
Voice
Subscriber Line
Interface Circuit
(SLIC)
TP
VBAT
GND
1
2
RP
Transmit
Voice
TIP
4
TIP
TIP
8
7
TCM1030, GND
6
VS TCM1050
GND
5
RING
RING
R
RP (see Note A)
RP (see Note A)
RING
0.47 µF
(see Note B)
0.1 µF
(see Note C)
48 V
NOTES: A. RP is 100 Ω minimum for TCM1030 and 70 Ω minimum for TCM1050.
B. 0.47 µF, 100 V stacked film metalized plastic capacitor
C. 0.1 µF, 100 V ceramic capacitor
Figure 2. Typical Line Card Application Circuit
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• DALLAS, TEXAS 75265
5
TCM1030, TCM1050
DUAL TRANSIENT-VOLTAGE SUPPRESSORS
SCTS040B – JUNE 1989 – REVISED JUNE 1997
MECHANICAL DATA
D (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
14 PIN SHOWN
PINS **
0.050 (1,27)
8
14
16
A MAX
0.197
(5,00)
0.344
(8,75)
0.394
(10,00)
A MIN
0.189
(4,80)
0.337
(8,55)
0.386
(9,80)
DIM
0.020 (0,51)
0.014 (0,35)
14
0.010 (0,25) M
8
0.244 (6,20)
0.228 (5,80)
0.008 (0,20) NOM
0.157 (4,00)
0.150 (3,81)
1
Gage Plane
7
A
0.010 (0,25)
0°– 8°
0.044 (1,12)
0.016 (0,40)
Seating Plane
0.069 (1,75) MAX
0.010 (0,25)
0.004 (0,10)
0.004 (0,10)
4040047 / D 10/96
NOTES: A.
B.
C.
D.
6
All linear dimensions are in inches (millimeters).
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion, not to exceed 0.006 (0,15).
Falls within JEDEC MS-012
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TCM1030, TCM1050
DUAL TRANSIENT-VOLTAGE SUPPRESSORS
SCTS040B – JUNE 1989 – REVISED JUNE 1997
MECHANICAL DATA
P (R-PDIP-T8)
PLASTIC DUAL-IN-LINE PACKAGE
0.400 (10,60)
0.355 (9,02)
8
5
0.260 (6,60)
0.240 (6,10)
1
4
0.070 (1,78) MAX
PRODUCT PREVIEW
0.310 (7,87)
0.290 (7,37)
0.020 (0,51) MIN
0.200 (5,08) MAX
Seating Plane
0.125 (3,18) MIN
0.100 (2,54)
0.021 (0,53)
0.015 (0,38)
0°– 15°
0.010 (0,25) M
0.010 (0,25) NOM
4040082 / B 03/95
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001
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7
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Copyright  1998, Texas Instruments Incorporated