LTC4366 - High Voltage Surge Stopper

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
Designed for Automotive and Transportation Applications
AEC-Q100 data available for specific packages


Typical Application

LTC4366 Typical Application
LTC4366 Typical Application

Description

The LTC®4366 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.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTC4366CDDB-1#PBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC4366CDDB-1#TRMPBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC4366CDDB-1#TRPBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC4366CDDB-2#PBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC4366CDDB-2#TRMPBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC4366CDDB-2#TRPBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC4366CTS8-1#PBF SOT-23 TS8 C 05-08-1637 Yes
LTC4366CTS8-1#TRMPBF SOT-23 TS8 C 05-08-1637 Yes
LTC4366CTS8-1#TRPBF SOT-23 TS8 C 05-08-1637 Yes
LTC4366CTS8-2#PBF SOT-23 TS8 C 05-08-1637 Yes
LTC4366CTS8-2#TRMPBF SOT-23 TS8 C 05-08-1637 Yes
LTC4366CTS8-2#TRPBF SOT-23 TS8 C 05-08-1637 Yes
LTC4366HDDB-1#PBF 3x2 DFN-8 DDB H 05-08-1702 Yes
LTC4366HDDB-1#TRMPBF 3x2 DFN-8 DDB H 05-08-1702 Yes
LTC4366HDDB-1#TRPBF 3x2 DFN-8 DDB H 05-08-1702 Yes
LTC4366HDDB-2#PBF 3x2 DFN-8 DDB H 05-08-1702 Yes
LTC4366HDDB-2#TRMPBF 3x2 DFN-8 DDB H 05-08-1702 Yes
LTC4366HDDB-2#TRPBF 3x2 DFN-8 DDB H 05-08-1702 Yes
LTC4366HTS8-1#PBF SOT-23 TS8 H 05-08-1637 Yes
LTC4366HTS8-1#TRMPBF SOT-23 TS8 H 05-08-1637 Yes
LTC4366HTS8-1#TRPBF SOT-23 TS8 H 05-08-1637 Yes
LTC4366HTS8-2#PBF SOT-23 TS8 H 05-08-1637 Yes
LTC4366HTS8-2#TRMPBF SOT-23 TS8 H 05-08-1637 Yes
LTC4366HTS8-2#TRPBF SOT-23 TS8 H 05-08-1637 Yes
LTC4366IDDB-1#PBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC4366IDDB-1#TRMPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC4366IDDB-1#TRPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC4366IDDB-2#PBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC4366IDDB-2#TRMPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC4366IDDB-2#TRPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC4366ITS8-1#PBF SOT-23 TS8 I 05-08-1637 Yes
LTC4366ITS8-1#TRMPBF SOT-23 TS8 I 05-08-1637 Yes
LTC4366ITS8-1#TRPBF SOT-23 TS8 I 05-08-1637 Yes
LTC4366ITS8-2#PBF SOT-23 TS8 I 05-08-1637 Yes
LTC4366ITS8-2#TRMPBF SOT-23 TS8 I 05-08-1637 Yes
LTC4366ITS8-2#TRPBF SOT-23 TS8 I 05-08-1637 Yes
LTC4366MPDDB-1#PBF 3x2 DFN-8 DDB MP 05-08-1702 Yes
LTC4366MPDDB-1#TRMPBF 3x2 DFN-8 DDB MP 05-08-1702 Yes
LTC4366MPDDB-1#TRPBF 3x2 DFN-8 DDB MP 05-08-1702 Yes
LTC4366MPDDB-2#PBF 3x2 DFN-8 DDB MP 05-08-1702 Yes
LTC4366MPDDB-2#TRMPBF 3x2 DFN-8 DDB MP 05-08-1702 Yes
LTC4366MPDDB-2#TRPBF 3x2 DFN-8 DDB MP 05-08-1702 Yes
LTC4366MPTS8-1#PBF SOT-23 TS8 MP 05-08-1637 Yes
LTC4366MPTS8-1#TRMPBF SOT-23 TS8 MP 05-08-1637 Yes
LTC4366MPTS8-1#TRPBF SOT-23 TS8 MP 05-08-1637 Yes
LTC4366MPTS8-2#PBF SOT-23 TS8 MP 05-08-1637 Yes
LTC4366MPTS8-2#TRM SOT-23 TS8 MP 05-08-1637 No
LTC4366MPTS8-2#TRMPBF SOT-23 TS8 MP 05-08-1637 Yes
LTC4366MPTS8-2#TRPBF SOT-23 TS8 MP 05-08-1637 Yes


LTC4366 Package Drawing
LTC4366 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC4366CDDB-1#PBF 3x2 DFN-8 C $3.79 Yes
LTC4366CDDB-1#TRMPBF 3x2 DFN-8 C $3.79 $2.70 Yes
LTC4366CDDB-1#TRPBF 3x2 DFN-8 C $3.79 $2.65 Yes
LTC4366CDDB-2#PBF 3x2 DFN-8 C $3.79 Yes
LTC4366CDDB-2#TRMPBF 3x2 DFN-8 C $3.79 $2.70 Yes
LTC4366CDDB-2#TRPBF 3x2 DFN-8 C $3.79 $2.65 Yes
LTC4366CTS8-1#PBF SOT-23 C $3.79 Yes
LTC4366CTS8-1#TRMPBF SOT-23 C $3.79 $2.70 Yes
LTC4366CTS8-1#TRPBF SOT-23 C $3.79 $2.65 Yes
LTC4366CTS8-2#PBF SOT-23 C $3.79 Yes
LTC4366CTS8-2#TRMPBF SOT-23 C $3.79 $2.70 Yes
LTC4366CTS8-2#TRPBF SOT-23 C $3.79 $2.65 Yes
LTC4366HDDB-1#PBF 3x2 DFN-8 H $5.00 Yes
LTC4366HDDB-1#TRMPBF 3x2 DFN-8 H $5.00 $3.55 Yes
LTC4366HDDB-1#TRPBF 3x2 DFN-8 H $5.00 $3.50 Yes
LTC4366HDDB-2#PBF 3x2 DFN-8 H $5.00 Yes
LTC4366HDDB-2#TRMPBF 3x2 DFN-8 H $5.00 $3.55 Yes
LTC4366HDDB-2#TRPBF 3x2 DFN-8 H $5.00 $3.50 Yes
LTC4366HTS8-1#PBF SOT-23 H $5.00 Yes
LTC4366HTS8-1#TRMPBF SOT-23 H $5.00 $3.55 Yes
LTC4366HTS8-1#TRPBF SOT-23 H $5.00 $3.50 Yes
LTC4366HTS8-2#PBF SOT-23 H $5.00 Yes
LTC4366HTS8-2#TRMPBF SOT-23 H $5.00 $3.55 Yes
LTC4366HTS8-2#TRPBF SOT-23 H $5.00 $3.50 Yes
LTC4366IDDB-1#PBF 3x2 DFN-8 I $4.36 Yes
LTC4366IDDB-1#TRMPBF 3x2 DFN-8 I $4.36 $3.10 Yes
LTC4366IDDB-1#TRPBF 3x2 DFN-8 I $4.36 $3.05 Yes
LTC4366IDDB-2#PBF 3x2 DFN-8 I $4.36 Yes
LTC4366IDDB-2#TRMPBF 3x2 DFN-8 I $4.36 $3.10 Yes
LTC4366IDDB-2#TRPBF 3x2 DFN-8 I $4.36 $3.05 Yes
LTC4366ITS8-1#PBF SOT-23 I $4.36 Yes
LTC4366ITS8-1#TRMPBF SOT-23 I $4.36 $3.10 Yes
LTC4366ITS8-1#TRPBF SOT-23 I $4.36 $3.05 Yes
LTC4366ITS8-2#PBF SOT-23 I $4.36 Yes
LTC4366ITS8-2#TRMPBF SOT-23 I $4.36 $3.10 Yes
LTC4366ITS8-2#TRPBF SOT-23 I $4.36 $3.05 Yes
LTC4366MPDDB-1#PBF 3x2 DFN-8 MP $11.36 Yes
LTC4366MPDDB-1#TRMPBF 3x2 DFN-8 MP $11.36 $8.00 Yes
LTC4366MPDDB-1#TRPBF 3x2 DFN-8 MP $11.36 $7.95 Yes
LTC4366MPDDB-2#PBF 3x2 DFN-8 MP $11.36 Yes
LTC4366MPDDB-2#TRMPBF 3x2 DFN-8 MP $11.36 $8.00 Yes
LTC4366MPDDB-2#TRPBF 3x2 DFN-8 MP $11.36 $7.95 Yes
LTC4366MPTS8-1#PBF SOT-23 MP $11.36 Yes
LTC4366MPTS8-1#TRMPBF SOT-23 MP $11.36 $8.00 Yes
LTC4366MPTS8-1#TRPBF SOT-23 MP $11.36 $7.95 Yes
LTC4366MPTS8-2#PBF SOT-23 MP $11.36 Yes
LTC4366MPTS8-2#TRM SOT-23 MP $11.36 $8.00 No
LTC4366MPTS8-2#TRMPBF SOT-23 MP $11.36 $8.00 Yes
LTC4366MPTS8-2#TRPBF SOT-23 MP $11.36 $7.95 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1850A-A LTC4366-1 Demoboard | Very High Voltage Surge Stopper with Latchoff $75.00
DC1850A-B LTC4366-2 Demoboard | Very High Voltage Surge Stopper with Auto-Retry $75.00
DC2150A-C 28V, 5A MIL-STD-1275D Surge Stopper [Featuring LTC4366HTS8-2 and LT4363HS-2] $150.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC4366HTS8-1#PBF SOT-23 H $5.00 Yes
LTC4366HTS8-1#TRMPBF SOT-23 H $5.00 $3.55 Yes
LTC4366HTS8-1#TRPBF SOT-23 H $5.00 $3.50 Yes
LTC4366HTS8-2#PBF SOT-23 H $5.00 Yes
LTC4366HTS8-2#TRMPBF SOT-23 H $5.00 $3.55 Yes
LTC4366HTS8-2#TRPBF SOT-23 H $5.00 $3.50 Yes
LTC4366ITS8-1#PBF SOT-23 I $4.36 Yes
LTC4366ITS8-1#TRMPBF SOT-23 I $4.36 $3.10 Yes
LTC4366ITS8-1#TRPBF SOT-23 I $4.36 $3.05 Yes
LTC4366ITS8-2#PBF SOT-23 I $4.36 Yes
LTC4366ITS8-2#TRMPBF SOT-23 I $4.36 $3.10 Yes
LTC4366ITS8-2#TRPBF SOT-23 I $4.36 $3.05 Yes
LTC4366MPTS8-1#PBF SOT-23 MP $11.36 Yes
LTC4366MPTS8-1#TRMPBF SOT-23 MP $11.36 $8.00 Yes
LTC4366MPTS8-1#TRPBF SOT-23 MP $11.36 $7.95 Yes
LTC4366MPTS8-2#PBF SOT-23 MP $11.36 Yes
LTC4366MPTS8-2#TRMPBF SOT-23 MP $11.36 $8.00 Yes
LTC4366MPTS8-2#TRPBF SOT-23 MP $11.36 $7.95 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Applications

  • Industrial, Automotive and Avionic Surge Protection
  • High Voltage DC Distribution
  • 28V Vehicle Systems

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice does not automatically open after clicking the link above, 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

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice IV:
LTC4366-1
LTC4366-2

Technical Support