LTC4367 - 100V Overvoltage, Undervoltage and Reverse Supply Protection Controller


  • Wide Operating Voltage Range: 2.5V to 60V
  • Overvoltage Protection to 100V
  • Reverse Supply Protection to –40V
  • LTC4367: Blocks 50Hz and 60Hz AC Power
  • LTC4367: 32ms Recovery from Fault
  • LTC4367-1: Fast 500μs Recovery from Fault
  • No Input Capacitor or TVS Required for Most Applications
  • Adjustable Undervoltage and Overvoltage Thresholds
  • Controls Back-to-Back N-Channel MOSFETs
  • Low Operating Current: 70μA
  • Low Shutdown Current: 5μA
  • 8-Pin MSOP and 3mm × 3mm DFN Packages

Typical Application

LTC4367 Typical Application
LTC4367 Typical Application


The LTC®4367 protects applications where power supply input voltages may be too high, too low or even negative. It does this by controlling the gate voltages of a pair of external N-channel MOSFETs to ensure that the output stays within a safe operating range.The LTC4367 withstands voltages between –40V and 100V and has an operating range of 2.5V to 60V, while consuming only 70μA in normal operation.

Two comparator inputs allow configuration of the overvoltage (OV) and undervoltage (UV) set points using an external resistive divider. A shutdown pin provides external control for enabling and disabling the MOSFETs as well as placing the device in a low current shutdown state. A fault output indicates that the GATE pin is pulling low when the part is in shutdown or the input voltage is outside the UV and OV set points.

The LTC4367 has a 32ms turn-on delay that debounces live connections and blocks 50Hz to 60Hz AC power. For fast recovery after faults, the LTC4367-1 has a reduced turn-on delay of 500μs.


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

Part Number Package Code Temp Package
LTC4367CDD-1#PBF 3x3 DFN-8 DD C 05-08-1698 Yes
LTC4367CDD-1#TRPBF 3x3 DFN-8 DD C 05-08-1698 Yes
LTC4367CDD#PBF 3x3 DFN-8 DD C 05-08-1698 Yes
LTC4367CDD#TRPBF 3x3 DFN-8 DD C 05-08-1698 Yes
LTC4367CMS8-1#PBF MS-8 MS8 C 05-08-1660 Yes
LTC4367CMS8-1#TRPBF MS-8 MS8 C 05-08-1660 Yes
LTC4367CMS8#PBF MS-8 MS8 C 05-08-1660 Yes
LTC4367CMS8#TRPBF MS-8 MS8 C 05-08-1660 Yes
LTC4367HDD-1#PBF 3x3 DFN-8 DD H 05-08-1698 Yes
LTC4367HDD-1#TRPBF 3x3 DFN-8 DD H 05-08-1698 Yes
LTC4367HDD#PBF 3x3 DFN-8 DD H 05-08-1698 Yes
LTC4367HDD#TRPBF 3x3 DFN-8 DD H 05-08-1698 Yes
LTC4367HMS8-1#PBF MS-8 MS8 H 05-08-1660 Yes
LTC4367HMS8-1#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC4367HMS8#PBF MS-8 MS8 H 05-08-1660 Yes
LTC4367HMS8#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC4367IDD-1#PBF 3x3 DFN-8 DD I 05-08-1698 Yes
LTC4367IDD-1#TRPBF 3x3 DFN-8 DD I 05-08-1698 Yes
LTC4367IDD#PBF 3x3 DFN-8 DD I 05-08-1698 Yes
LTC4367IDD#TRPBF 3x3 DFN-8 DD I 05-08-1698 Yes
LTC4367IMS8-1#PBF MS-8 MS8 I 05-08-1660 Yes
LTC4367IMS8-1#TRPBF MS-8 MS8 I 05-08-1660 Yes
LTC4367IMS8#PBF MS-8 MS8 I 05-08-1660 Yes
LTC4367IMS8#TRPBF MS-8 MS8 I 05-08-1660 Yes

LTC4367 Package Drawing
LTC4367 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
LTC4367CDD-1#PBF 3x3 DFN-8 C $2.50 $1.75 Yes
LTC4367CDD-1#TRPBF 3x3 DFN-8 C $2.56 $1.81 Yes
LTC4367CDD#PBF 3x3 DFN-8 C $2.50 $1.75 Yes
LTC4367CDD#TRPBF 3x3 DFN-8 C $2.56 $1.81 Yes
LTC4367CMS8-1#PBF MS-8 C $2.50 $1.75 Yes
LTC4367CMS8-1#TRPBF MS-8 C $2.56 $1.81 Yes
LTC4367CMS8#PBF MS-8 C $2.50 $1.75 Yes
LTC4367CMS8#TRPBF MS-8 C $2.56 $1.81 Yes
LTC4367HDD-1#PBF 3x3 DFN-8 H $3.16 $2.21 Yes
LTC4367HDD-1#TRPBF 3x3 DFN-8 H $3.22 $2.27 Yes
LTC4367HDD#PBF 3x3 DFN-8 H $3.16 $2.21 Yes
LTC4367HDD#TRPBF 3x3 DFN-8 H $3.22 $2.27 Yes
LTC4367HMS8-1#PBF MS-8 H $3.16 $2.21 Yes
LTC4367HMS8-1#TRPBF MS-8 H $3.22 $2.27 Yes
LTC4367HMS8#PBF MS-8 H $3.16 $2.21 Yes
LTC4367HMS8#TRPBF MS-8 H $3.22 $2.27 Yes
LTC4367IDD-1#PBF 3x3 DFN-8 I $2.75 $1.93 Yes
LTC4367IDD-1#TRPBF 3x3 DFN-8 I $2.81 $1.99 Yes
LTC4367IDD#PBF 3x3 DFN-8 I $2.75 $1.93 Yes
LTC4367IDD#TRPBF 3x3 DFN-8 I $2.81 $1.99 Yes
LTC4367IMS8-1#PBF MS-8 I $2.75 $1.93 Yes
LTC4367IMS8-1#TRPBF MS-8 I $2.81 $1.99 Yes
LTC4367IMS8#PBF MS-8 I $2.75 $1.93 Yes
LTC4367IMS8#TRPBF MS-8 I $2.81 $1.99 Yes
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* 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
DC2417A-A LTC4367IMS8 Demo Board | UV, OV and Reverse Supply Protection with 32ms Fault Recovery $50.00
DC2417A-B LTC4367IMS8-1 Demo Board | UV, OV and Reverse Supply Protection with 0.5ms Fault Recovery $50.00
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