MCP111T-315E/LB Microchip Integrated Circuit (SOT23 (3-Pin)) In Stock
Microchip MCP111T-315E/LB is a single-channel voltage supervisor that monitors a 3.15 V threshold with a detection window of 3.003 V to 3.157 V. It asserts an active-low reset output to protect microcontrollers during power-up, brownout, or supply glitches. The tiny SC-70 3-pin package minimizes board area in space-constrained designs.
- Manufacturer
- Microchip
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP111T-315E/LB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2100(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 3.15 V threshold with tight ±2.5% accuracy ensuring reliable brownout detection on 3.3 V rails
- Active-low open-drain reset output compatible with most 3.3 V microcontroller and DSP reset pins
- Ultra-small 3-pin SC-70 package occupying minimal PCB area for density-critical portable designs
- Low quiescent current consumption enabling always-on monitoring in battery-powered systems
Applications
The MCP111T-315E/LB is used to supervise the 3.3 V supply rail of microcontrollers, FPGAs, and memory devices in industrial sensors, portable medical equipment, and IoT nodes where an unexpected brownout must trigger a controlled system reset. Its tight threshold window ensures the MCU reset is asserted before the supply falls below the minimum operating voltage, preventing data corruption or lock-up. The SC-70 footprint makes it a drop-in supervisor for compact PCBs in wearables, smart meters, and handheld instruments.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SC70-3 |
| Factory Lead Time | 7Weeks |
| 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 | TSOP3,.08,25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE |
| 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 | 0.65mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +3.08V |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| 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
What is the exact voltage threshold window of the MCP111T-315E/LB, and why does tight accuracy matter?
The MCP111T-315E/LB monitors a 3.15 V nominal threshold with a detection window of 3.003 V to 3.157 V, representing ±2.5% accuracy. Tight accuracy ensures the reset is asserted before a 3.3 V rail drops below the MCU's minimum operating voltage of typically 3.0 V, preventing unpredictable firmware behaviour during brownout events.
How does the MCP111T-315E/LB reset output interface with a 3.3 V microcontroller reset pin?
The device provides an active-low, open-drain RESET output that can be connected directly to a 3.3 V microcontroller's active-low reset pin with a pull-up resistor of typically 10 kΩ to 100 kΩ. This standard interface requires no level-shifting and is compatible with virtually all 3.3 V logic-family devices.
For a compact IoT sensor PCB, how much board space does the SC-70 package of the MCP111T-315E/LB require?
The SC-70 3-pin package measures approximately 2.0 mm × 1.25 mm with a typical height of 0.95 mm, occupying less than 2.5 mm² of board area. This makes it one of the smallest supervisor packages available and ideal for multi-layer IoT boards where every square millimetre of space is shared among dozens of components.
How does the MCP111T-315E/LB compare to a software brownout detection routine implemented in firmware?
Unlike a firmware-based routine that depends on the MCU itself running correctly, the MCP111T-315E/LB monitors the supply rail autonomously and asserts the reset signal within a guaranteed 200 µs response time even if the processor has already entered an undefined state, providing a hardware safety net that software alone cannot replicate.
Related Guides
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 2026
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.4500 | $0.45 |
| 25+ | $0.3700 | $9.25 |
| 100+ | $0.2340 | $23.40 |
| 250+ | $0.2330 | $58.25 |
| 500+ | $0.2320 | $116.00 |
| 3000+ | $0.2100 | $630.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”