LTC4365 - Overvoltage, Undervoltage and Reverse Supply Protection Controller
Features
- Wide Operating Voltage Range: 2.5V to 34V
- Overvoltage Protection to 60V
- Reverse Supply Protection to –40V
- LTC4365: Blocks 50Hz and 60Hz AC Power
- LTC4365-1: Fast (1ms) Recovery from Fault
- No Input Capacitor or TVS Required for Most Applications
- Adjustable Undervoltage and Overvoltage Protection Range
- Charge Pump Enhances External N-Channel MOSFET
- Low Operating Current: 125μA
- Low Shutdown Current: 10μA
- Compact 8-Lead, 3mm × 2mm DFN and TSOT-23 (ThinSOT™) Packages
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC®4365 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 LTC4365 can withstand voltages between –40V and 60V and has an operating range of 2.5V to 34V, while consuming only 125μA 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 provides status of the gate pin pulling low. A fault is indicated when the part is in shutdown or the input voltage is outside the UV and OV set points.
The LTC4365 has a 36ms turn-on delay that debounces live connections and blocks 50Hz to 60Hz AC power. For fast recovery after faults, the LTC4365-1 has a reduced 1ms turn-on delay.
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 |
|---|---|---|---|---|---|
| LTC4365CDDB-1#PBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC4365CDDB-1#TRMPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC4365CDDB-1#TRPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC4365CDDB#PBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC4365CDDB#TRMPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC4365CDDB#TRPBF | 3x2 DFN-8 | DDB | C | 05-08-1702 | Yes |
| LTC4365CTS8-1#PBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC4365CTS8-1#TRMPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC4365CTS8-1#TRPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC4365CTS8#PBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC4365CTS8#TRMPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC4365CTS8#TRPBF | SOT-23 | TS8 | C | 05-08-1637 | Yes |
| LTC4365HDDB-1#PBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC4365HDDB-1#TRMPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC4365HDDB-1#TRPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC4365HDDB#PBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC4365HDDB#TRMPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC4365HDDB#TRPBF | 3x2 DFN-8 | DDB | H | 05-08-1702 | Yes |
| LTC4365HTS8-1#PBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC4365HTS8-1#TRMPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC4365HTS8-1#TRPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC4365HTS8#PBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC4365HTS8#TRMPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC4365HTS8#TRPBF | SOT-23 | TS8 | H | 05-08-1637 | Yes |
| LTC4365IDDB-1#PBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC4365IDDB-1#TRMPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC4365IDDB-1#TRPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC4365IDDB#PBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC4365IDDB#TRMPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC4365IDDB#TRPBF | 3x2 DFN-8 | DDB | I | 05-08-1702 | Yes |
| LTC4365ITS8-1#PBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC4365ITS8-1#TRMPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC4365ITS8-1#TRPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC4365ITS8#PBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC4365ITS8#TRMPBF | SOT-23 | TS8 | I | 05-08-1637 | Yes |
| LTC4365ITS8#TRPBF | SOT-23 | TS8 | I | 05-08-1637 | 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 |
|---|---|---|---|
| DC1555B | LTC4365CTS8 Demo Board: High Voltage NFET Driver for UV, OV and Reverse Supply Protection | $25.00 | |
| DC1555C-B | LTC4365CTS8-1 Demo Board | High Voltage NFET Driver for UV, OV and Reverse Supply Protection with 1ms Fault Recovery | $25.00 | |
| Buy Now | |||
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 | |
|---|---|---|---|---|---|---|
| LTC4365HTS8-1#PBF | SOT-23 | H | $2.63 | Yes | ||
| LTC4365HTS8-1#TRMPBF | SOT-23 | H | $2.63 | $1.85 | Yes | |
| LTC4365HTS8-1#TRPBF | SOT-23 | H | $2.58 | $1.80 | Yes | |
| LTC4365HTS8#PBF | SOT-23 | H | $2.63 | Yes | ||
| LTC4365HTS8#TRMPBF | SOT-23 | H | $2.63 | $1.85 | Yes | |
| LTC4365HTS8#TRPBF | SOT-23 | H | $2.58 | $1.80 | Yes | |
| LTC4365ITS8-1#PBF | SOT-23 | I | $2.39 | Yes | ||
| LTC4365ITS8-1#TRMPBF | SOT-23 | I | $2.39 | $1.69 | Yes | |
| LTC4365ITS8-1#TRPBF | SOT-23 | I | $2.34 | $1.64 | Yes | |
| LTC4365ITS8#PBF | SOT-23 | I | $2.39 | Yes | ||
| LTC4365ITS8#TRMPBF | SOT-23 | I | $2.39 | $1.69 | Yes | |
| LTC4365ITS8#TRPBF | SOT-23 | I | $2.34 | $1.64 | Yes | |
| Buy Now • Request Samples | ||||||
Applications
- Portable Instrumentation
- Industrial Automation
- Laptops
- Automotive Surge Protection
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Design Tools
LTspice
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Models for the following parts are available in LTspice:
LTC4365
LTC4365-1
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.
