MCP111T-315E/TT Microchip Integrated Circuit (SOT23 (3-Pin)) In Stock
Microchip MCP111T-315E/TT is a single-channel voltage supervisor and detector in a SOT-23 3-pin package that monitors supply rails between 3.003 V and 3.157 V and asserts a manual reset output when voltage falls out of range. It targets microcontroller reset circuits, 3.3 V power sequencing, and brown-out protection in embedded systems.
- Manufacturer
- Microchip
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP111T-315E/TT Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Single-channel voltage supervisor monitoring 3.003 V to 3.157 V rail
- Asserts manual reset output on undervoltage detection without watchdog timer
- Fixed-threshold design eliminates external resistors for threshold setting
- SOT-23 3-pin package for minimal PCB footprint in space-constrained boards
- RoHS-compliant SOT-23-3 package with JEDEC e3 lead-free qualification
Applications
The MCP111T-315E/TT is designed for microcontroller and processor reset supervision in 3.3 V embedded systems, ensuring reliable power-on reset and brown-out detection when the supply voltage drops below the 3.003 V threshold. It is commonly used in IoT sensor nodes, portable medical devices, and industrial control boards where a compact, low-component-count voltage monitoring solution is needed to prevent controller lockup during power supply disturbances.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-3 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Additional Feature | MNL RST:N;PW FL IO:N;PRG RST DLY:N;WD:N;WDO:N;WWD:N |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE DETECTOR |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-236 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 0.00175mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.96mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +3.08V |
| Package | SOT23 (3-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 | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Over what voltage window does the MCP111T-315E/TT supervise the supply rail?
The MCP111T-315E/TT monitors a supply voltage window from 3.003 V to 3.157 V, centered on a nominal 3.08 V threshold. When the monitored rail drops below 3.003 V, the device asserts its reset output to hold the microcontroller in a safe reset state, preventing undefined firmware behavior during brown-out conditions or slow power-down sequences.
Does the MCP111T-315E/TT support an adjustable reset threshold, and when does that matter?
No, the MCP111T-315E/TT uses a fixed threshold between 3.003 V and 3.157 V and does not support an adjustable threshold. This simplifies design by eliminating the resistor divider required for programmable supervisors, reducing BOM cost and board space. It is the correct choice when the target microcontroller operates from a standard 3.3 V rail and a fixed supervision point is acceptable.
Which package does the MCP111T-315E/TT use and how compact is it relative to other supervisor ICs?
The MCP111T-315E/TT uses a SOT-23 3-pin package, one of the smallest standard surface-mount packages with a body approximately 3 mm x 1.75 mm. With only 3 pins needed for supply input, ground, and reset output, it occupies minimal PCB real estate, making it suitable for battery-powered wearables, IoT modules, and microcontroller reset circuits where board space is at a premium.
Does the MCP111T-315E/TT include a watchdog timer or programmable reset delay?
No, the MCP111T-315E/TT does not include a watchdog timer, watchdog output, programmable reset delay, or power-fail I/O. It is a simple fixed-threshold voltage detector that generates a manual reset signal when the 3.3 V supply falls below 3.003 V. For designs requiring watchdog functionality or programmable delay times in the millisecond to second range, a more feature-rich supervisor IC from the MCP1xx family would be needed.
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