ST TDE1737 User Manual
Interface circuit - relay and lamp-driver
Features
■ High output current
■ Adjustable short-circuit protection
■ Thermal protection with hysteresis to avoid the
intermediate output levels
■ Large supply voltage range: + 8V to +45V
Description
The TDE1737 is a monolithic amplifier designed
for high current and high voltage applications,
specifically to drive lamps, relays and control of
stepper motors.
This device is essentially blow-out proof.
Current limiting is available to limit the peak output
current to a safe value, the adjustment only
requires one external resistor. In addition, thermal
shut down is provided to keep the I.C. from
overheating. If internal dissipation becomes too
great, the driver will shut down to prevent
excessive heating.
SO14
TDE1737
DIP-8
The output is also protected against short-circuits
with the positive power supply.
The device operates over a wide range of supply
voltages from standard ± 15 V operational
amplifier supplies down to the single + 12 V or +
24 used for industrial electronic systems
.
Order codes
Part number Temp range, ° CPackage Packing
TDE1737DP -25°C to +85°C DIP-8 Tube
TDE1737FP -25°C to +85°C SO14 Tube
TDE1737FPT -25°C to +85°C SO14 Tape and reel
May 2006 Rev 3 1/13
www.st.com
13
Contents TDE1737
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 application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2/13
TDE1737 Maximum ratings
1 Maximum ratings
1.1 Absolute maximum ratings
Table 1. Absolute maximum ratings
Symbol Parameter Value Unit
V
VID Differential Input Voltage 50 V
P
Toper Operating Free–air Temperature Range for TDE1737 – 25 to + 85 °C
T
STG
1.2 Thermal data
Supply Voltage 50 V
S
VI
Input Voltage 50 V
IO
Output Current 1000 mA
Power Dissipation Internally Limited W
tot
Storage Temperature Range – 65 to + 150 °C
Table 2. Thermal data
Symbol Description Value Unit
R
R
thJA
thJC
Thermal Resistance Junction-ambient (DIP-8) Max. 120 °C/W
Thermal Resistance Junction-case (DIP-8) Max. 50 °C/W
Junction-ceramic substrate (case glued to substrate) 90 °C/W
3/13
Electrical characteristics TDE1737
2 Electrical characteristics
25°C ≤ TA ≤ +85°C, + 8V ≤ VCC ≤ +45 V, IO ≤ 300mA, TJ ≤ +150°C (unless otherwise specified)
Table 3. Electrical characteristics
Symbol Parameter Min. Typ. Max. Unit
V
Input Offset Voltage
IO
I
Input Bias Current – 0.1 1.5 mA
IB
ICC Supply Current (V
VCM Common–mode Input Voltage Range 2 –
ISC
VCC–VO
I
1. 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.
2. Devices bonded on a 40 cm
Short–circuit Current Limit (R
Output Saturation Voltage (output low) (V
= 300mA, RSC = 0)
I
O
Output Leakage Current (output high) (VO = V
OL
= + 25°C)
T
A
(1)
= +24V, IO = 0)
CC
= 1.5Ω, T
SC
2
glass-epoxy printed circuit 0.15cm thick with 4 cm2 of cooper.
CASE
+
– V
I
= + 25°C)
≤ 50mV
I
= +24V,
CC
– 2 50 mV
–
3 5 mA
VCC–2
500 – mA
–
– 1 1.5 V
– 10 mA
–
V
4/13
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