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TDE1767 Datasheet

  • TDE1767

  • INTERFACE CIRCUIT RELAY AND LAMP-DRIVER

  • 10頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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TDE1767, A
TDE1787, A
INTERFACE CIRCUIT (RELAY AND LAMP-DRIVER)
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 V
CC
OUTPUT VOLTAGE CAN BE LOWER THAN
GROUND (V
CC
- V
O
鈮?/div>
V
CC
[max])
Minidip
DESCRIPTION
The TDE1767, A/TDE1787, A are a monolithic am-
plifiers 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 15 V operational amplifier supplies
to the single +6V or +48V used for industrial electric
systems. Input voltages can be higher than in the
V
CC
.
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.
THERMAL DATA
Symbol
R
th (j - c)
R
th (j - a)
Parameter
Maximum Junction-case Thermal Resistance
ORDERING NUMBERS :
TDE1767 DP
TDE1767 ADP
TDE1787 DP
TDE1787 ADP
PIN CONNECTION
(top view)
Value
30
80
Unit
擄
C/W
擄C/W
Maximum Junction-ambient Thermal Resistence
* Devices bonded on a 40 cm2 glass-epoxy printed circuit 0.15 cm thick with 4 cm2 of copper.
March 1993
1/10

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