ANALOG DEVICES LTC4366HTS8-1#TRMPBF Hot-Swap Controller, Surge Stopper, 9 to 500V in, TSOT-23-8, -40 to 125°C

LTC4366HTS8-1#TRMPBF is a high-voltage surge stopper that protects loads from high-voltage transients. By controlling the gate of an external N-channel MOSFET, the LTC4366 regulates the output during an overvoltage transient. The load may remain operational while the overvoltage is dropped across the MOSFET. Placing a resistor in the return line isolates the LTC4366 and allows it to float up with the supply; therefore, the upper limit on the output voltage depends only on the availability of high-valued resistors and MOSFET ratings. An adjustable overvoltage timer prevents MOSFET damage during the surge, while an additional 9-second timer provides for MOSFET cool down. A shutdown pin reduces the quiescent current to less than 14µA during shutdown. After a fault, the LTC4366-1 latches off, while the LTC4366-2 will auto-retry. Applications include industrial, automotive, and avionic surge protection, high-voltage DC distribution, and 28V vehicle systems.

• Rugged floating topology, adjustable output clamp voltage
• Wide operating voltage range from 9V to <gt/>500V
• Controls N-channel MOSFET, adjustable protection timer
• VDD shunt regulator load regulation is 60mV typ (I = 1mA to 5mA)
• OUT shunt regulator voltage range from 5.0 to 6.0V (I = 1mA, BASE = 0V)
• VDD pin current � shutdown is 5µA typ (VDD = 7V, OUT = 0V)
• BASE shunt regulator voltage (OUT � BASE) is 6.1V typ (I = �10µA, OUT = 4.5V)
• TIMER pin pull-up current is �9µA typ at TIMER = 1V
• TIMER pin pull-down current is 1.8µA at TIMER = 1V
• 8-lead plastic TSOT-23 package, operating ambient temperature range from -40°C to 125°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party