MCP1318MT-46LE/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
MCP1318MT-46LE/OT is a single-channel Voltage Supervisor and Reset IC in SOT-23-5 package from Microchip. Features a fixed 4.6 V detection threshold with no external components needed for reliable power-on and brownout reset supervision. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP1318MT-46LE/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6100(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 4.6 V threshold voltage supervisor with no external resistors required, reducing BOM cost and PCB area for reset circuits
- Single-channel SOT-23-5 package occupies under 5 mm² for integration in space-constrained microcontroller reset networks
- Open-drain reset output supports wired-OR connection of multiple supervisors in multi-rail power sequencing applications
Applications
MCP1318MT-46LE/OT is used in microcontroller and microprocessor reset circuits where a reliable brownout detection threshold of 4.6 V ensures the CPU does not execute code on an under-voltage supply. It is integrated into battery-powered embedded systems, industrial IoT nodes, and automotive ECU designs requiring a compact supervisory reset in the smallest available package. The fixed-threshold design eliminates resistor tolerance errors common in adjustable supervisor circuits.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.01mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1V |
| Supply Voltage-Nom (Vsup) | 1.5V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +4.6V |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the fixed threshold voltage of MCP1318MT-46LE/OT and how is it set?
MCP1318MT-46LE/OT has a fixed detection threshold of 4.6 V with no external resistors or programming required. When the monitored supply drops below 4.6 V, the open-drain reset output asserts low, holding the microcontroller in reset until the supply recovers above the threshold with added hysteresis.
How does MCP1318MT-46LE/OT perform in battery-backed systems near end-of-life voltage?
MCP1318MT-46LE/OT's 4.6 V threshold detects brownout conditions early in a 5 V alkaline or lead-acid battery discharge curve, typically at 80-90% depth of discharge. This prevents data corruption in EEPROM write cycles or microcontroller register corruption that occur when VCC falls below the minimum rated 4.5 V operating voltage.
What reset output configuration does MCP1318MT-46LE/OT use and what pull-up is needed?
MCP1318MT-46LE/OT provides an open-drain active-low reset output that requires an external pull-up resistor, typically 10 kΩ to 100 kΩ, connected to the logic supply rail. The open-drain topology allows multiple supervisors to share a single reset bus in multi-rail power sequencing circuits.
How does MCP1318MT-46LE/OT in SOT-23-5 compare to DIP-packaged voltage supervisors for board density?
The SOT-23-5 package of MCP1318MT-46LE/OT occupies approximately 2.9 mm x 1.6 mm, roughly 10 times smaller than an 8-pin DIP supervisory IC footprint. This reduction allows designers to place the reset supervisor directly adjacent to the microcontroller VCC pin with under 5 mm trace routing to minimize supervisory delay.
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