Page 1
Interface circuit (relay and lamp driver)
Features
■ High output current
■ Adjustable short-circuit protection to ground
■ Internal thermal protection with hysteresis to
avoid the intermediate output levels
■ Large supply voltage range: 8 to 30V
■ Short-circuit protection to V
■
Open ground protection
Description
The TDE3247 is a monolithic amplifier designed
for high current and high voltage applications,
specifically to drive lamps, relays and stepping
motors.
CC
TDE3247
SO-14
The Device is essentialy blow-out proof. Current
limiting is available to limit the peak output current
to a safe value, the adjustment only required an
external resistor.
In addition, thermal shut-down is provided to keep
the IC from overheating.
If external dissipation becomes too high, the
driver will shut-down to prevent excessive
heating.
The output is also protected against short-circuit
with the positive power supply.
The device operates over a wide range of supply
voltage from standard
supplies down to the single 12V or 24V used for
industrial electronic systems.
±15V operational amplifier
Order codes
Part number Package Packaging
TDE3247FP SO-14 Tube
TDE3247FPT SO-14 Tape & Reel
June 2006 Rev 2 1/15
www.st.com
15
Page 2
Contents TDE3247
Contents
1 Schematic diagram and pin connections . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Electrical characteristics (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2/15
Page 3
TDE3247 Schematic diagram and pin connections
1 Schematic diagram and pin connections
Figure 1. Schematic diagram
Figure 2. Pin connections
3/15
Page 4
Electrical ratings TDE3247
2 Electrical ratings
Table 1. Absolute maximum ratings
Symbol Parameter Value Unit
V
P
T
T
CC
V
V
I
O
TOT
oper
STG
Supply Voltage 36 V
Differential Input Voltage 36 V
O
Input Voltage 36 V
I
Output Current 300 mA
Power Dissipation Internally limited W
Ambient Temperature Range –25 to 85 ° C
Storage Temperature Range –65 to +150 ° C
Table 2. Thermal data
Junction-ceramic Substrate
R
th
R
th
(case glued to substrate)
For SO-14
Junction-ceramic Substrate
(case glued to substrate, substrate
temperature maintened constant)
For SO-14
90 °C/W
65 °C/W
4/15
Page 5
TDE3247 Electrical characteristics
3 Electrical characteristics
(-25°C ≤ TA 85°C, 8V ≤ V
CC
≤ 30V, I
≤ 150mA, TJ ≤ 150°C, unless otherwise specified) Note: 1
O
Table 3. Electrical characteristics
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
I
V
I
V
CC
I
Input Offset Voltage Note 2 250mV
IO
Input Bias Current 0.1 1.5 µA
I
IB
VCC = 24V, IO = 0A,
25°C
T
amb =
High Level 4 10 mA
CC
Supply Current
Low Level 2 mA
Common Mode Input
CM
Voltage Range
Short-circuit Current
SC
Output Saturation Voltage
- V
O
(Output High)
V
= 24V, T
CC
amb =
RSC = 3.3Ω
+
-
- V
(V
I
) ≤ 50mV
I
I
= 150mA, RSC = 0
O
TJ = 25°C
25°C
2V
CC
250 mA
1.2 1.8 V
VO = 0V, VCC = 24V
Output Leakage Current
I
OL
(Output Low)
Minimum Short-current
OS
Output Current
T
= 25°C 1 100 µA
J
= 85°C 500 µA
T
J
T
25°C, VCC = 24V
amb =
R
SC
= ∞
50 mA
-2 V
Note: 1 For operating at high temperatures, the device must be derated based on a 150°C
maximum junction and a junction to ambient thermal resistance of 110°C/W
2 The offset voltage given in the maximum value of input voltage required to drive the output
voltage within 2V of the ground or the supply voltage.
5/15
Page 6
Electrical characteristics TDE3247
3.1 Electrical characteristics (curves)
Figure 3. Available output current vs. limiting
resistor
Figure 5. Saturation output voltage vs. case
temperature and available output
current
Figure 4. Supply current vs. junction
temperature
Figure 6. Supply current vs. supply voltage
6/15
Page 7
TDE3247 Electrical characteristics
Figure 7. Supply voltage vs. minimum limiting
resistor value
Figure 9. Response time
Figure 8. Response time
7/15
Page 8
Application circuit TDE3247
4 Application circuit
Figure 10. Basic application circuit
Figure 11. Output current boosting (5A)
8/15
Page 9
TDE3247 Package mechanical data
5 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
9/15
Page 10
Package mechanical data TDE3247
Table 4. SO-14 Mechanical data
mm. inch
Dim.
Min. Typ Max. Min. Typ. Max.
A 1.75 0.068
a1 0.1 0.2 0.003 0.007
a2 1.65 0.064
b 0.35 0.46 0.013 0.018
b1 0.19 0.25 0.007 0.010
C 0.5 0.019
c1 45° (typ.)
D 8.55 8.75 0.336 0.344
E 5.8 6.2 0.228 0.244
e 1.27 0.050
e3 7.62 0.300
F 3.8 4.0 0.149 0.157
G 4.6 5.3 0.181 0.208
L 0.5 1.27 0.019 0.050
M 0.68 0.026
S 8° (max.)
Figure 12. Package dimensions
10/15
Page 11
TDE3247 Package mechanical data
Table 5. Tube shipment information
Tube mechanical data
mm. inch.
A 6.60 ±0.10 0.260 ±0.004
B 1.90 ±0.10 0.075 ±0.004
C 0.60 ±0.10 0.024 ±0.004
D 7.80 ±0.10 0.307 ±0.004
E 4.30 ±0.10 0.169 ±0.004
BASE QUANTITY 100 pcs.
BULK QUANTITY 2000 pcs.
Figure 13. Tube dimension
11/15
Page 12
Package mechanical data TDE3247
Table 6. Tape & reel shipment information
Tape mechanical data
mm. inch
D 1.50 +0.1/0 0.059 +0.004/0
E 1.75 ±0.1 0.069 ±0.004
Po 4.00 ±0.1 0.157 ±0.004
T max. 0.40 0.016
D1 min. 1.50 0.059
F 7.5 ±0.05 0.295 ±0.002
K max. 6.50 0.256
P2 2.00 ±0.05 0.079 ±0.002
R 40 1.575
W 16.00 ±0.30 0.630 ±0.012
P1 12.00 0.472
Ao, Bo, Ko 0.05 min to 0.90 max. 0.002 min to 0.035 max.
Figure 14. Tape specification
12/15
Page 13
TDE3247 Package mechanical data
Table 7. Reel mechanical data
mm. inch
Tape size 16.0 ±0.30 0.630 ±0.012
A max. 330.0 12.992
B min. 1.5 0.059
C 13.0 ±0.20 0.512 ±0.008
D min. 20.2 0.795
N min. 60 2.362
G 16.4 +2/-0 0.646 +0.079/-0
T max. 22.4 0.882
Figure 15. Tape & reel shipment information
13/15
Page 14
Revision history TDE3247
6 Revision history
Table 8. Revision history
Date Revision Changes
20-Apr-2006 1 First release
27-Jun-2006 2 Typo in cover page
14/15
Page 15
TDE3247 Revision history
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