LTC4367 - 100V Overvoltage, Undervoltage and Reverse Supply Protection Controller
Features
- 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
Description
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.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| 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 |
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
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 | |
| Buy Now | |||
Applications
- Portable Instrumentation
- Industrial Automation
- Laptops
- Automotive Surge (Load Dump) Protection
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Design Tools
LTspice
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Models for the following parts are available in LTspice:
LTC4367
LTC4367-1
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.