TDE1747FPT STMicroelectronics

TDE1747 Datasheet Interface circuit - relay and lamp-driver Features Open ground protection High output current Adjustable short-circuit protection to ground Thermal protection with hysteresis to avoid the intermediate output levels Large supply voltage range: + 8 V to +45 V Short-circuit protection to V CC Applications Industrial PC peripheral input/output Interface circuit Relay and lamp driver Stepping-motor driver Description TDE1747 is a monolithic comparator designed for high current and high voltage applications, specifically to drive lamps, relays, stepping motors. This device is essentially blow-out proof. Current limiting is available to limit the peak output current to safe values. Adjustment only requires one external resistor. In addition, thermal shut down is Product status link provided to keep the IC from overheating. If internal dissipation becomes too high, the driver will shut down to prevent excessive heating. TDE1747 has an open ground TDE1747 protection. The output is also protected from shortcircuits with the positive power supply. Product label 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 V used for industrial electronic systems. DS4791 - Rev 2 - December 2021 www.st.com For further information contact your local STMicroelectronics sales office.TDE1747 Maximum ratings 1 Maximum ratings Table 1. Absolute maximum ratings Symbol Parameter Value Unit (1) V Supply voltage 50 V CC V Input voltage 50 V I V Differential input voltage 50 V ID I Output current 1 A O P Power dissipation (TA = 25 C) Internally Limited W tot T Operating freeair temperature range -25 to 85 C oper T Storage temperature range -65 to 150 C STG Note: (1) 60 V, t 10 ms Table 2. Thermal data Symbol Description Value Unit R Thermal resistance junction-ambient 120 th(JA) R Thermal resistance junction-case 50 th(JC) C/W R Junction-ceramic substrate (case glued to substrate) 90 th Junction-ceramic Substrate (case glued to substrate, R 65 th substrate temperature maintained constant) DS4791 - Rev 2 page 2/20