STMICROELECTRONICS TDE1747FP

TDE1747
Interface circuit - relay and lamp-driver
Features
■
Open ground protection
■
High output current
■
Adjustable short-circuit protection to ground
■
Thermal protection with hysteresis to avoid the
intermediate output levels
■
Large supply voltage range: + 8V to +45V
■
Short-circuit protection to VCC
SO14
DIP-8
Description
The TDE1747 is a monolithic comparator
designed for high current and high voltage
applications, specifically to drive lamps, relays,
stepping motors.
This device is essentially blow-out proof. Current
limiting is available to limit the peak output current
to safe values.
Adjustment only requires one external resistor. In
addition, thermal shut down is provided to keep
the IC from overheating. If internal dissipation
becomes too high, the driver will shut down to
prevent excessive heating. TDE1747 has an open
ground protection. The output is also protected
from shortcircuits with the positive power supply.
The device operates over a wide range of supply
voltages from standard ± 15V operational
amplifier supplies down to the single +12V or
+24V used for industrial electronic systems.
.
Order codes
Part number
Temp range, ° C
Package
Packing
TDE1747DP
-25°C to +85°C
DIP-8
Tube
TDE1747FP
-25°C to +85°C
SO14
Tube
TDE1747FPT
-25°C to +85°C
SO14
Tape and reel
September 2006
Rev 1
1/17
www.st.com
17
TDE1747
Contents
Contents
1
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Pin connections and schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5
Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
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TDE1747
Maximum ratings
1
Maximum ratings
1.1
Absolute maximum ratings
Table 1.
Absolute maximum ratings
Symbol
Value
Unit
50 (1)
V
Input voltage
50
V
VID
Differential input voltage
50
V
IO
Output current
1
A
Internally Limited
W
VCC
VI
Parameter
Supply voltage
Ptot
Power dissipation (TA = +25°C)
Toper
Operating Free–air Temperature Range
– 25 to + 85
°C
TSTG
Storage temperature range
– 65 to + 150
°C
1. 60V, t ≤10ms
1.2
Table 2.
Symbol
Thermal data
Thermal data
Description
Value
Unit
RthJA
Thermal Resistance Junction-ambient
120
°C/W
RthJC
Thermal Resistance Junction-case
50
°C/W
Rth
Junction-ceramic Substrate (case glued to substrate) SO14
90
°C/W
Rth
Junction-ceramic Substrate (case glued to substrate, substrate
temperature maintained constant) SO14
65
°C/W
3/17
TDE1747
Electrical characteristics
2
Electrical characteristics
TJ =
Table 3.
− 25 to +85°C, VCC = 8 to 45 V, unless otherwise specified (note 1)
Electrical characteristics
Symbol
Parameter
Min
Typ
Max
Unit
VIO
Input offset voltage(1)(2)
–
2
50
mV
IIB
Input bias current
–
0.1
1.5
mA
High level
Low level
–
–
4
2
6
4
mA
mA
Common–mode input voltage range
2
–
VCC–2
V
–
–
480
35
–
50
mA
mA
–
–
1.15
1.05
1.4
1.3
V
V
–
0.01
10
µA
Supply Current (VCC = +24V, IO = 0)
ICC
VI(max)
Short–circuit Current Limit (TA = 25°C, VCC = +24V)
ISC
RSC= 1.5Ω
RSC= ∞
VCC–VO
Output saturation voltage (output low)
(VI+– VI- ≥ 50mV, RSC = 0, IO = 300mA, )
TJ = + 25°C
TA = + 25°C
IOL
Output leakage current (output high)
(VO = 0, VCC = +24V, TA = + 25°C)
1. For operating at high temperature, the TDE1747, must be derated based on a +150°C maximum junction temperature and
junction-ambient thermal resistance of 120°C/W for DIP-8 and 100°C/W for the SO14.
2. The offset voltage given is the maximum value of input voltage required to drive the output voltage within 2V of the ground
or the supply voltage.
4/17
TDE1747
3
Pin connections and schematic diagrams
Pin connections and schematic diagrams
Figure 1.
Pin connections (top views)
Figure 2.
Schematic diagram
5/17
Pin connections and schematic diagrams
6/17
Figure 3.
Test circuit
Figure 4.
Simplified schematic
TDE1747
TDE1747
4
Typical characteristics
Typical characteristics
Figure 5.
Available output current vs
limiting resistors
Figure 6.
Peak short-circuit vs
limiting resistor
Figure 7.
Short-circuit current vs
case temperature
Figure 8.
Minimum limiting resistor value vs
supply voltage
7/17
TDE1747
Typical characteristics
Figure 9.
Output current vs
output saturation voltage
Figure 11. Supply current vs
junction temperature
8/17
Figure 10. Supply current vs supply voltage
Figure 12. Safe operating area
(not repetitive surge)
TDE1747
Typical characteristics
Figure 13. Response time
9/17
Typical applications
5
Typical applications
Figure 14. Base circuit
Figure 15. Output current extension (5A)
10/17
TDE1747
TDE1747
Typical applications
Figure 16. Driving low impedance relays (IO = 300mA)
11/17
Waveforms
6
Waveforms
Figure 17. Input current vs time
Figure 18. Response time with zener diode
Figure 19. Response time without zener diode
12/17
TDE1747
TDE1747
7
Package mechanical data
Package 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
13/17
TDE1747
Package mechanical data
Table 4.
SO14 Mechanical data
mm
Inch
Dim.
Min
Typ
Max
Min
Typ
Max
A
1.35
1.75
0.053
0.069
A1
0.10
0.30
0.004
0.012
A2
1.10
1.65
0.043
0.065
B
0.33
0.51
0.013
0.020
C
0.19
0.25
0.007
0.01
(1)
8.55
8.75
0.337
0.344
E
3.80
4.0
0.150
0.157
D
e
H
1.27
5.8
0.050
6.20
0.228
0.244
h
0.25
0.50
0.01
0.02
L
0.40
1.27
0.016
0.050
k
ddd
0° (min.), 8° (max.)
0.10
0.004
1. “D” dimension does not include mold flash, protusions or gate burrs. Mold flash, protusions or gate burrs shall not exceed
0.15mm per side.
Figure 20. Package dimensions
0016019 D
14/17
TDE1747
Table 5.
Package mechanical data
DIP-8 Mechanical data
mm
Inch
Dim.
Min
A
Typ
Min
3.32
a1
0.51
B
1.15
b
b1
Typ
0.131
1.65
0.045
0.065
0.356
0.55
0.014
0.022
0.204
0.304
0.008
0.012
10.92
7.95
9.75
0.430
0.313
0.384
e
2.54
0.100
e3
7.62
0.300
e4
7.62
0.300
F
6.6
I
L
Max
0.020
D
E
Max
0.260
5.08
3.18
Z
3.81
1.52
0.200
0.125
0.150
0.060
Figure 21. Package dimensions
15/17
TDE1747
Revision history
8
Revision history
Table 6.
16/17
Revision history
Date
Revision
20-Sep-2006
1
Changes
New template
TDE1747
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