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 DIP-8 Input voltage can be higher than V CC Output voltage can be lower than ground (V - V V ) CC O CC max Description The devices operates over a wide range voltages The TDE1767, TDE1767A, TDE1787, TDE1787A from standard 15V operational amplifier supplies are a monolithic amplifiers designed for high to the single +6V or +48V used for industrial current and high voltage applications, specifically electric systems. Input voltages can be higher to drive lamps, relays, stepping motors. than in the V . CC The devices are assentially blow-out proof. The An alarm output suitable for driving a LED is output is prois protected from short-circuits with provited. This LED, normally on (if referred to the positive supply or drive. In addition thermal ground), will die out or flash during an overload shut down is provited to keep the IC from depending on the state of the reset input. overheathing. The output is low in open ground conditions. 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. Table 1. Device summary Part number Package Packaging TDE1767DP DIP8 Tube TDE1767ADP DIP8 Tube TDE1787DP DIP8 Tube TDE1787ADP DIP8 Tube March 2007 Rev 2 1/16 www.st.com 16Contents TDE1767 - TDE1787 Contents 1 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Electrical characteristcs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 Using alarm output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16