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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])
DIP-8
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.
Table 1.
Device summary
Part number TDE1767DP TDE1767ADP TDE1787DP TDE1787ADP Package DIP8 DIP8 DIP8 DIP8 Packaging Tube Tube Tube Tube
March 2007
Rev 2
1/16
www.st.com 16
Contents
TDE1767 - TDE1787
Contents
1 2 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 2.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 4 5 6 7 8 9
Electrical characteristcs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Using alarm output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2/16
TDE1767 - TDE1787
Pin connections
1
Pin connections
Figure 1. Pin connection (top view)
ALARM OUTPUT INVERTING INPUT NON INVERTING INPUT GND
1 2 3 4
D03IN1475
8 7 6 5
CURRENT LIMIT VCC OUTPUT RESET
2
2.1
Maximum ratings
Absolute maximum ratings
Table 2.
Symbol VCC VID Vl IO Vl(reset) IOA Ptot
Toper
Absolute maximum ratings
Parameter Supply voltage Input differential voltage Input voltage Output current Reset input voltage Alarm output current Power dissipation Operating ambient temperature range Storage temperature range TDE1767A TDE1787A 60 60 - 10 to + 60 1.3 - 0.5 to + 60 - 10 to + 20 TDE1767 TDE1787 50 50 - 10 to + 50 1.2 - 0.5 to + 50 - 10 to + 20 Unit V V V A V mA mW C C
Internally Limited - 25 to + 85 - 65 to + 150 - 25 to + 85 - 65 to + 150
Tstg
2.2
Thermal data
Table 3.
Symbol Rth(JC) Rth(JA)
Thermal data
Parameter Thermal resistance junction-case Thermal resistance junction-ambient Value max 30 max 80 Unit C/W C/W
Note:
Devices bonded on a 40 cm2 glass-epoxy printed circuit 0.15 cm thick with 4 cm2 of copper.
3/16
Electrical characteristcs
TDE1767 - TDE1787
3
Electrical characteristcs
TDE1767A: - 25C TA 85C, 6V VCC 55V, Io 500mA, TJ 150C TDE1767: - 25C TA 85C, 6V VCC 45V, Io 500mA, TJ 150C TDE1787A: - 25C TA 85C, 6V VCC 55V, Io 300mA, TJ 150C TDE1787: 25C TA 85C, 6V VCC 45V, Io 300mA, TJ 150C Unless otherwise specified. Table 4.
Symbol VIO
Electrical characteristics
Parameter Input offset voltage (note 1) (measured on pin 4) Output high (TA = 25C) 5.8 5 1.5 15 TDE1787A, TDE1767A TDE1787, TDE1767 Vref 1V (figure1, note2) TDE1787A, TDE1767A TDE1787, TDE1767 VCC = 35V, t = 10ms TDE1767A: RSC = 0.22 TDE1787A: RSC = 0.33 VO = VCC -2V, t = 10ms VO = 0V, t = 10ms 130 120 1 1 1 1 700 380 150 140 170 165 8 7 4 100 60 45 60 45 mA mA mA A V V V V mA mA mV mV Test condition Min. Typ. 2 Max. 50 Unit mV
ICC
Power supply current
Output high (VCC = VCCmax, (TJ = 150C) Output low (VCC = VCCmax, (TA = 25C)
IIB VCM
Imput bias current Common-mode input voltage range Input voltage range
VI
ISC
Short circuit output current Output limit sense voltage Output limit sense voltage
Vsense Vsense
VO(sat)
Output high VI+- VI- 50mV; RSC = 0; VCC = 30V TDE1787A, TDE1767A: TJ = 25C TDE1787, TDE1767: TJ = 25C Output saturation voltage TDE1787A, TDE1767A: TJ = 150C TDE1787, TDE1767: TJ = 150C Output leakage current Output low
1 1 1.1 1.1
1.1 1.2 1.2 1.3 100
V V V V A
IOL
4/16
TDE1767 - TDE1787 Table 4.
Symbol
Electrical characteristcs Electrical characteristics (continued)
Parameter Test condition Output source current VAH = VCC-2.5V Output sink current (in thermal shut-down) VA = 1.4V Min. -4 Typ. -5 Max. Unit mA
IA
Available alarm output current
5
10 2 1.4 40
mA A A A
Ireset
Reset input current
Vth-reset Reset threhold Output leakage current open ground
10
Note:
1 2
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. Input voltage range is indipendent of the supply voltage.
5/16
Schematic diagrams
TDE1767 - TDE1787
4
Schematic diagrams
Figure 2.
2 + 3 1 7 20 K 5K 8
Schematic diagram
210
3K
2K
600
20 pF
300
200
2K
2K
6 3.6K 10 K 1.8 K
1.1K
8.4K
300
20 K
20 K
10 K 5
3 K 4
D03IN1476
Figure 3.
Equivalent schematic
7 G1 2 + SHORT-CIRCUIT PROTECTION 6 THERMAL PROTECTION 4 GROUND
D03IN1477
VCC RSC
G2 8
AMP
INPUTS
3 1
CURRENT LIMIT
ALARM OUTPUT
RESET
5
OUTPUT RL
Vl VCC +6V0
The reference input can be the inverting or non-inverting one
D03IN1478
6/16
TDE1767 - TDE1787
Typical characteristics
5
Typical characteristics
Figure 4. Peak short-circuit vs limiting resistor
D03IN1479
Figure 5.
IO (A) 0.9
Available output current vs limiting resistor
D03IN1480
ICS (A) 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0
VCC = +30V Tamb = +25C
0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1
Tamb = +85C
VCC = +30V
Tamb = +25C
0.1 0.2 0.3 0.4 0.5 0.6 0.7 RL()
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 RL()
Figure 6.
Power supply current (pin 4)
Figure 7.
VO (sat) (V) 1.4
Output saturation voltage vs output current
D03IN1482
IS (mA)
D03IN1481
6
Tj = +25C IO = 0.5A Tj = +150C Output high
1.3 1.2 1.1 1.0 0.9 0.8
Tj = +25C
RSC = 0
4
Tj = +150C
2
Output low
0.7 0.6
0
0
10
20
30
40
50
60
70
VS(V)
0.5
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
IO(A)
7/16
Typical characteristics Figure 8. Output transistor safe operating area (pulsed))
D03IN1483
TDE1767 - TDE1787 Figure 9. Normal operating area (short circuit protected)
D03IN1484
IO (A) 1.2
t=
RL ()
no short circuit protection
t= ms 10
1.0 0.8 0.6 0.4
0.1 0.2 0.3 0.4
TDE1767A
TDE1767A
TDE1787A
TDE1767 TDE1787
0.2 0 0 10 20 30 40
0.5 0.6 0 10 20 30 40
50
60
VS(V)
50
60
TDE1787A
TDE1767 TDE1787
Figure 10. Current sinking
Isync (mA) 28 24 20 16 12 8 4 0 0 1 2 3 VO(V)
Alarm output after thermal shutdown
D03IN1485
Figure 12. Response time
D03IN1487
10 0m s
VS(V)
Figure 11. Current sourcing
Isync (mA) 14 12 10 8 6 4 2 0 0 1 2 3 VO(V)
Alarm output normal operation
D03IN1486
Tamb = +25C
Tamb = +25C
Figure 13. Response time
D03IN1488
Vo (V) 0
Vo (V) 0 2.5V Vi (V) 0
Vi (V) 0
0
1
2
3
4
t(s)
0
5
10
15
20
t(s)
8/16
TDE1767 - TDE1787
Typical application
6
Typical application
Figure 14. Test circuit
VCC +30V
0.22 + 100
1.4V
D03IN1489
Figure 15. Open load detection.4
RS RSC + RSIL 100mV R2
D03IN1492
VCC VCCR1 R2 50mV
R1
IL
LOAD
Figure 16. Driving lamps, relays, etc...
RSC
VCC INPUT +
CURRENT LIMITING
ALARM OUTPUT GROUND 5.6K
RESET
OUTPUT
100K (max)
RL
D03IN1493
9/16
Typical application Figure 17. Common reset.
TDE1767 - TDE1787
VCC RSC RSC
OUTPUT + RESET GROUND ALARM 100K (max) RESET
+
D03IN1494
Figure 18. Parallel driving of loads up to 1 A.
VCC 0.15 Vref Vi + RL 0.15 + Vref Vi
RESET 100K (max)
D03IN1495
10/16
TDE1767 - TDE1787
Using alarm output
7
Using alarm output
Figure 19. Parallel alarm output
VCC 10K 7 + 4 ALARM SIGNAL 1 + 4
D03IN1496
1
7
Figure 20. LED to VCC
VCC 5.6K
7
1
4
D03IN1497
Figure 21. LED to ground
VCC 7
4
1 5.6K
D03IN1498
11/16
Using alarm output
TDE1767 - TDE1787
Figure 22. Interface between high voltage and low voltage system.
VCC+50V RSC +1HIGH VOLTAGE SYSTEM
VCC+6V
0LOW VOLTAGE SYSTEM
D03IN1499
Figure 23. Increasing current up to 10A.
VCC VCC + RESET ALARM OUTPUT RESET RL 0.01 CURRENT LIMITING OUTPUT
100K (max)
GROUND
D03IN1500
12/16
TDE1767 - TDE1787
Mechanical data
8
Mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) 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.
13/16
Mechanical data Table 5.
Dim. Min A Typ 3.32 Max Min
TDE1767 - TDE1787 DIP-8 Mechanical data
mm Inch Typ 0.131 Max
a1 B b b1 D E e e3 e4 F I L Z
0.51 1.15 0.356 0.204 1.65 0.55 0.304 10.92 7.95 2.54 7.62 7.62 6.6 5.08 3.18 3.81 1.52 9.75
0.020 0.045 0.014 0.008 0.065 0.022 0.012 0.430 0.313 0.100 0.300 0.300 0.260 0.200 0.125 0.150 0.060 0.384
Figure 24. Package dimensions
14/16
TDE1767 - TDE1787
Revision history
9
Revision history
Table 6.
Date 20-Sep-2003 3-Mar-2007
Revision history
Revision 1 2 Initial release. Document reformatted, typo Figure 1 on page 3 Changes
15/16
TDE1767 - TDE1787
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