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])
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.
DIP-8
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
March 2007
Package
DIP8
DIP8
DIP8
DIP8
Rev 2
Packaging
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