LTC4366IDDB-2#TRMPBF

LTC4366-2 surge stopper protects loads from high voltage transients. By controlling the gate of an external N-channel MOSFET, the device 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 LTC4366-2 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 LTC4366-2 will auto-retry. Applications include industrial, automotive and avionic surge protection, high voltage DC distribution and 28V vehicle systems.

• Rugged floating topology
• Wide operating voltage range from 9V to <gt/>500V
• Adjustable output clamp voltage
• Controls N-channel MOSFET
• Adjustable protection timer
• Internal 9-second cool-down timer
• Shutdown IQ <lt/> 14µA
• 8-lead plastic DFN package, -40°C to 85°C temperature range

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