March 2007 Rev 2 1/16
16
TDE1767
TDE1787
Interface circuit (relay and Lamp-driver)
Features
■Open ground protection
■High output current
■Adjustable short-circuit protection
■Internal thermal protection with external reset
■Large supply voltage range
■Alarm output
■Input voltage can be higher than VCC
■Output voltage can be lower than ground
(VCC - VO ≤ VCC[max])
Description
The TDE1767, TDE1767A, TDE1787, TDE1787A
are a monolithic amplifiers designed for high
current and high voltage applications, specifically
to drive lamps, relays, stepping motors.
The devices are assentially blow-out proof. The
output is prois protected from short-circuits with
the positive supply or drive. In addition thermal
shut down is provited to keep the IC from
overheathing.
If internal dissipation becomes too high, the driver
will shut down to prevent excessive heating. The
output stays null after the overheating is off, if the
reset input is low. If high the output will
alternatively switch-on and off until the overload is
removed.
The devices operates over a wide range voltages
from standard 15V operational amplifier supplies
to the single +6V or +48V used for industrial
electric systems. Input voltages can be higher
than in the VCC.
An alarm output suitable for driving a LED is
provited. This LED, normally on (if referred to
ground), will die out or flash during an overload
depending on the state of the reset input.
The output is low in open ground conditions.
DIP-8
www.st.com
Table 1. Device summary
Part number Package Packaging
TDE1767DP DIP8 Tube
TDE1767ADP DIP8 Tube
TDE1787DP DIP8 Tube
TDE1787ADP DIP8 Tube
Contents TDE1767 - TDE1787
2/16
Contents
1 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 Electrical characteristcs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 Using alarm output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TDE1767 - TDE1787 Pin connections
3/16
1 Pin connections
Figure 1. Pin connection (top view)
2 Maximum ratings
2.1 Absolute maximum ratings
2.2 Thermal data
Note: Devices bonded on a 40 cm2 glass-epoxy printed circuit 0.15 cm thick with 4 cm2 of copper.
ALARM OUTPUT
INVERTING INPUT
NON INVERTING INPUT
GND
1
3
2
4 RESET
OUTPUT
V
CC
CURRENT LIMIT8
7
6
5
D03IN1475
Table 2. Absolute maximum ratings
Symbol Parameter TDE1767A
TDE1787A
TDE1767
TDE1787 Unit
VCC Supply voltage 60 50 V
VID Input differential voltage 60 50 V
VlInput voltage - 10 to + 60 - 10 to + 50 V
IOOutput current 1.3 1.2 A
Vl(reset) Reset input voltage - 0.5 to + 60 - 0.5 to + 50 V
IOA Alarm output current - 10 to + 20 - 10 to + 20 mA
Ptot Power dissipation Internally Limited mW
T
oper Operating ambient temperature
range - 25 to + 85 - 25 to + 85 °C
Tstg Storage temperature range - 65 to + 150 - 65 to + 150 °C
Table 3. Thermal data
Symbol Parameter Value Unit
Rth(JC) Thermal resistance junction-case max 30 °C/W
Rth(JA) Thermal resistance junction-ambient max 80 °C/W
Electrical characteristcs TDE1767 - TDE1787
4/16
3 Electrical characteristcs
TDE1767A: - 25°C ≤ TA ≤ 85°C, 6V ≤ VCC ≤ 55V, Io ≤ 500mA, TJ ≤ 150°C
TDE1767: - 25°C ≤ TA ≤ 85°C, 6V ≤ VCC ≤ 45V, Io ≤ 500mA, TJ ≤ 150°C
TDE1787A: - 25°C ≤ TA ≤ 85°C, 6V ≤ VCC ≤ 55V, Io ≤ 300mA, TJ ≤ 150°C
TDE1787: 25°C ≤ TA ≤ 85°C, 6V ≤ VCC ≤ 45V, Io ≤ 300mA, TJ ≤ 150°C
Unless otherwise specified.
Table 4. Electrical characteristics
Symbol Parameter Test condition Min. Typ. Max. Unit
VIO Input offset voltage (note 1) 2 50 mV
ICC Power supply current
(measured on pin 4)
Output high (TA = 25°C) 5.8 8 mA
Output high
(VCC = VCCmax, (TJ = 150°C) 57mA
Output low
(VCC = VCCmax, (TA = 25°C) 1.5 4 mA
IIB Imput bias current 15 100 µA
VCM
Common-mode input
voltage range
TDE1787A, TDE1767A
TDE1787, TDE1767
1
1
60
45
V
V
VI Input voltage range
Vref ≥ 1V (figure1, note2)
TDE1787A, TDE1767A
TDE1787, TDE1767
1
1
60
45
V
V
ISC
Short circuit output
current
VCC = 35V, t = 10ms
TDE1767A: RSC = 0.22Ω
TDE1787A: RSC = 0.33Ω
700
380
mA
mA
Vsense
Output limit sense
voltage VO = VCC -2V, t = 10ms 130 150 170 mV
Vsense
Output limit sense
voltage VO = 0V, t = 10ms 120 140 165 mV
VO(sat) Output saturation voltage
Output high VI+- VI- ≥ 50mV;
RSC = 0; VCC = 30V
TDE1787A, TDE1767A:
TJ = 25°C
TDE1787, TDE1767: TJ = 25°C
TDE1787A, TDE1767A:
TJ = 150°C
TDE1787, TDE1767:
TJ = 150°C
1
1
1.1
1.1
1.1
1.2
1.2
1.3
V
V
V
V
IOL Output leakage current Output low 100 µA
TDE1767 - TDE1787 Electrical characteristcs
5/16
Note: 1 The offset voltage given is the maximum value of different input voltage reguired to drive the
output voltage whitin 2 V of the ground or the supply voltage.
2 Input voltage range is indipendent of the supply voltage.
IA
Available alarm output
current
Output source current
VAH = VCC-2.5V -4 -5 mA
Output sink current
(in thermal shut-down)
VA = 1.4V
510 mA
Ireset Reset input current 2 40 µA
Vth-reset Reset threhold 1.4 A
Output leakage current open ground 10 µA
Table 4. Electrical characteristics (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
Schematic diagrams TDE1767 - TDE1787
6/16
4 Schematic diagrams
Figure 2. Schematic diagram
Figure 3. Equivalent schematic
8.4KΩ
3.6KΩ
210Ω
3 1
54
7
8
6
2
+-
3KΩ2KΩ
2KΩ2KΩ
200
Ω
5KΩ
20
pF
600
Ω
10
KΩ1.8
KΩ
1.1KΩ
300Ω20
KΩ
20
KΩ
20
KΩ
300
Ω
10
KΩ
3
KΩ
D03IN1476
SHORT-CIRCUIT
PROTECTION
THERMAL
PROTECTION
-
+
AMP
G1 G2
2
7
8
6 OUTPUT
GROUND
V
CC
CURRENT LIMIT
4
3INPUTS
ALARM OUTPUT
RESET
1
5
R
SC
R
L
D03IN1477
E
E
2
3
VREF
≥1V
VCC +6V<VCC<VCC(max)
The reference input can be the inverting or non-inverting one
D03IN147
8
0
1Vl(max)
Vl
TDE1767 - TDE1787 Typical characteristics
7/16
5 Typical characteristics
Figure 4. Peak short-circuit vs limiting
resistor
Figure 5. Available output current vs
limiting resistor
Figure 6. Power supply current (pin 4) Figure 7. Output saturation voltage vs
output current
0
00.1
0.1
0.2
0.2
0.3
0.3
0.4
0.4
0.5
0.5
0.6
0.6
0.7
0.7
R
L
(Ω)
0.8
0.9
I
CS
(A)
D03IN1479
V
CC
= +30V
Tamb = +25˚C
0
00.1
0.1
0.2
0.2
0.3
0.3
0.4
0.4
0.5
0.5
0.6
0.6
0.7
0.7
R
L
(Ω)
0.8
0.9
I
O
(A)
D03IN1480
V
CC
= +30V
T
amb
= +25˚C
T
amb
= +85˚C
0
010 20
2
30 40 50 60
4
70
6
V
S
(V)
I
S
(mA)
D03IN1481
I
O
= 0.5A
Output low
T
j
= +150˚C
T
j
= +25˚C
Output high
0
0.5 0.1
0.6
0.2
0.7
0.3
0.8
0.4
0.9
0.5
1.0
0.6
1.1
0.7
1.2
I
O
(A)
1.3
1.4
V
O (sat)
(V)
D03IN1482
R
SC
= 0
T
j
= +150˚C
T
j
= +25˚C
Typical characteristics TDE1767 - TDE1787
8/16
Figure 8. Output transistor safe
operating area (pulsed))
Figure 9. Normal operating area (short
circuit protected)
Figure 10. Current sinking Figure 11. Current sourcing
Figure 12. Response time Figure 13. Response time
0
0.2
10
0.4
20
0.6
30
0.8
40
1.0
50
1.2
060 VS(V)
IO
(A)
D03IN1483
t = 10ms
t = 100ms
TDE1767
TDE1787
TDE1787A
TDE1767A
0
0.5
10
0.4
20
0.3
30
0.2
40
0.1
50
0.6 60 V
S
(V)
R
L
(Ω)
D03IN1484
no short circuit
protection
TDE1767
TDE1787
TDE1787A
TDE1767A
0
01
8
23
16
24
4
12
20
28
V
O
(V)
I
sync
(mA)
D03IN1485
T
amb
= +25˚C
Alarm output
after thermal
shutdown
0
01
4
23
8
12
2
6
10
14
V
O
(V)
I
sync
(mA)
D03IN1486
T
amb
= +25˚C
Alarm output
normal operation
0
0
0
1234t(µs)
Vi
(V)
Vo
(V)
D03IN1487
0
0
2.5V
0
5101520t(µs)
Vi
(V)
Vo
(V)
D03IN1488
TDE1767 - TDE1787 Typical application
9/16
6 Typical application
Figure 14. Test circuit
Figure 15. Open load detection.4
Figure 16. Driving lamps, relays, etc...
+
-
0.22Ω
100Ω
1.4V
V
CC
+30V
D03IN1489
+
-
RSC
RS
LOADIL
≥ 50mV
R
S
I
L
≥ 100mV
V
CC
V
CC
R
1
R
2
D03IN1492
R
1
R
2
-
+
RSC
RL
INPUT
ALARM
OUTPUT
5.6KΩ100KΩ
(max)
V
CC
CURRENT LIMITING
D03IN1493
GROUND
RESET OUTPUT
Typical application TDE1767 - TDE1787
10/16
Figure 17. Common reset.
Figure 18. Parallel driving of loads up to 1 A.
-
++
RSC RSC
OUTPUT
ALARM
100KΩ
(max)
V
CC
D03IN1494
GROUND
-
RESET RESET
-
++
0.15Ω0.15Ω
V
ref
V
i
V
ref
V
i
R
L
100KΩ
(max)
V
CC
D03IN1495
-
RESET
TDE1767 - TDE1787 Using alarm output
11/16
7 Using alarm output
Figure 19. Parallel alarm output
Figure 20. LED to VCC
Figure 21. LED to ground
-
++
10KΩ
71 71
ALARM SIGNAL
VCC
D03IN1496
4
-
4
5.6KΩ
V
CC
D03IN1497
71
4
5.6KΩ
V
CC
D03IN1498
7
14
Using alarm output TDE1767 - TDE1787
12/16
Figure 22. Interface between high voltage and low voltage system.
Figure 23. Increasing current up to 10A.
R
SC
V
CC
≥+6VV
CC
≤+50V
+1<V
I
<+50
0<V
I
<+50
D03IN1499
LOW
VOLTAGE
SYSTEM
HIGH
VOLTAGE
SYSTEM
-
+
CURRENT LIMITING
RL
OUTPUT
ALARM
OUTPUT
GROUND
100KΩ
(max)
0.01Ω
V
CC
V
CC
D03IN1500
RESET RESET
TDE1767 - TDE1787 Mechanical data
13/16
8 Mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect. The category of
second Level Interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
Mechanical data TDE1767 - TDE1787
14/16
Figure 24. Package dimensions
Table 5. DIP-8 Mechanical data
Dim.
mm Inch
Min Typ Max Min Typ Max
A 3.32 0.131
a1 0.51 0.020
B 1.15 1.65 0.045 0.065
b 0.356 0.55 0.014 0.022
b1 0.204 0.304 0.008 0.012
D 10.92 0.430
E 7.95 9.75 0.313 0.384
e 2.54 0.100
e3 7.62 0.300
e4 7.62 0.300
F 6.6 0.260
I 5.08 0.200
L 3.18 3.81 0.125 0.150
Z 1.52 0.060
TDE1767 - TDE1787 Revision history
15/16
9 Revision history
Table 6. Revision history
Date Revision Changes
20-Sep-2003 1 Initial release.
3-Mar-2007 2 Document reformatted, typo Figure 1 on page 3
TDE1767 - TDE1787
16/16
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