LTC4366
Info : RECOMMENDED FOR NEW DESIGNS
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LTC4366

High Voltage Surge Stopper

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 32
1ku List Price Starting From $3.18
Features
  • Rugged Floating Topology
  • Wide Operating Voltage Range: 9V to >500V
  • Adjustable Output Clamp Voltage
  • Controls N-Channel MOSFET
  • Adjustable Protection Timer
  • Internal 9 Second Cool-Down Timer
  • Shutdown IQ < 14μA
  • Available in 8-Lead TSOT and 8-Lead 3mm × 2mm DFN Packages
Additional Details
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The LTC4366 surge stopper 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

  • Industrial, Automotive and Avionic Surge Protection
  • High Voltage DC Distribution
  • 28V Vehicle Systems
Part Models 32
1ku List Price Starting From $3.18

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4366CDDB-1#TRMPBF
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Oct 7, 2021

- 21_0074

LTC4366 Datasheet Limit Change

LTC4366CDDB-1#TRMPBF

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LTC4366 Datasheet Limit Change

LTC4366CDDB-1#TRMPBF

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LTC4366CDDB-2#TRMPBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

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DC1850A-A

LTC4366-1 Demoboard | Very High Voltage Surge Stopper with Latchoff

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DC1850A-B

LTC4366-2 Demoboard | Very High Voltage Surge Stopper with Auto-Retry

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DC2150A-C

28V, 5A MIL-STD-1275D Surge Stopper (Featuring LTC4366HTS8-2 and LT4363HS-2)

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DC2150A-C

28V, 5A MIL-STD-1275D Surge Stopper (Featuring LTC4366HTS8-2 and LT4363HS-2)

28V, 5A MIL-STD-1275D Surge Stopper (Featuring LTC4366HTS8-2 and LT4363HS-2)

Product Detail

Demonstration circuit 2150A uses the LTC4366-2 and LT4363-2 surge stoppers to satisfy MIL-STD-1275D. This specification, created by the United States Department of Defense, sets down requirements of electrical systems powered from a military vehicle’s 28V power supply. DC2150A’s output voltage is limited to 44V when faced with MIL-STD-1275D’s onerous surge, spike, and ripple conditions. In most circumstances, satisfying MIL-STD-1275D is as simple as placing this circuit in front of a 44V tolerant device. The default version, DC2150A-C, provides a minimum of 4A to the output in all conditions except the ±7V ripple condition (14Vpeak-to-peak). During the ripple condition, DC2150A-C provides a minimum of 2.8A to the load. Exceeding 2.8A during the input ripple condition may cause DC2150A-C to timeout and shutoff in less than MIL-STD-1275D’s one minute ripple ride-through requirement.

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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