DocumentationDatasheet
Reliability Data
Product Selector Card
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.
3x3 DFN-8,MS-8
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC4367HMS8#TRPBF | MSOP | 8 | H | $3.22 | $2.27 |
| LTC4367HMS8#PBF | MSOP | 8 | H | $3.16 | $2.21 |
| LTC4367CMS8#PBF | MSOP | 8 | C | $2.50 | $1.75 |
| LTC4367IDD#PBF | DFN | 8 | I | $2.75 | $1.93 |
| LTC4367HMS8-1#PBF | MSOP | 8 | H | $3.16 | $2.21 |
| LTC4367CDD#TRPBF | DFN | 8 | C | $2.56 | $1.81 |
| LTC4367CDD-1#PBF | DFN | 8 | C | $2.50 | $1.75 |
| LTC4367IDD-1#PBF | DFN | 8 | I | $2.75 | $1.93 |
| LTC4367HDD#PBF | DFN | 8 | H | $3.16 | $2.21 |
| LTC4367HDD#TRPBF | DFN | 8 | H | $3.22 | $2.27 |
| LTC4367HDD-1#PBF | DFN | 8 | H | $3.16 | $2.21 |
| LTC4367IMS8#PBF | MSOP | 8 | I | $2.75 | $1.93 |
| LTC4367IMS8#TRPBF | MSOP | 8 | I | $2.81 | $1.99 |
| LTC4367CMS8-1#PBF | MSOP | 8 | C | $2.50 | $1.75 |
| LTC4367HMS8-1#TRPBF | MSOP | 8 | H | $3.22 | $2.27 |
| LTC4367IDD-1#TRPBF | DFN | 8 | I | $2.81 | $1.99 |
| LTC4367IDD#TRPBF | DFN | 8 | I | $2.81 | $1.99 |
| LTC4367IMS8-1#PBF | MSOP | 8 | I | $2.75 | $1.93 |
| LTC4367HDD-1#TRPBF | DFN | 8 | H | $3.22 | $2.27 |
| LTC4367CMS8#TRPBF | MSOP | 8 | C | $2.56 | $1.81 |
| LTC4367CMS8-1#TRPBF | MSOP | 8 | C | $2.56 | $1.81 |
| LTC4367IMS8-1#TRPBF | MSOP | 8 | I | $2.81 | $1.99 |
| LTC4367CDD#PBF | DFN | 8 | C | $2.50 | $1.75 |
| LTC4367CDD-1#TRPBF | DFN | 8 | C | $2.56 | $1.81 |
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 |