MCP1317T-29LE/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
The Microchip MCP1317T-29LE/OT is a single-channel voltage supervisor with a fixed 2.90 V threshold and active-high reset output in a compact SOT-23-5 package. It includes a manual reset input for external push-button reset functionality. Available from stock worldwide with competitive pricing.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP1317T-29LE/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
What are the key features of MCP1317T-29LE/OT?
- Fixed 2.90 V threshold with active-high reset output asserts when VCC drops below 2.90 V, providing reliable power-on and brownout reset detection for 3.3 V microcontroller systems
- Manual reset input (MR) pin allows an external push-button to force a system reset without additional logic, reducing external component count to a single resistor
- Tiny SOT-23-5 package with Pb-free construction occupies minimal PCB area, suitable for portable devices, IoT nodes, and space-constrained control boards
What is MCP1317T-29LE/OT used for?
The MCP1317T-29LE/OT is used to supervise the power rail of 3.3 V microcontrollers and system-on-chips, asserting a reset signal when the supply voltage falls below 2.90 V during brownout or cold-start events. Its active-high output is directly compatible with MCU reset pins that expect a logic-high assertion, simplifying the reset network without inverter circuits. The manual reset input adds front-panel or debug push-button reset capability to embedded products such as industrial PLCs, wireless sensor nodes, and consumer appliances.
What are the specifications of MCP1317T-29LE/OT?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Additional Feature | BAT BUP SW:N;MNL RST:Y;OV DET:N;PW FL IP:N;PW FL IO:N;PW FL OP:N;PRG RST DLY:N;UV DET:N;WD:N;WWD:N |
| 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 | +2.9V |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia, Thailand |
Where can I find the MCP1317T-29LE/OT datasheet?
MCP1317T-29LE/OT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1317T-29LE/OT?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what supply voltage does the MCP1317T-29LE/OT assert its reset output, and what logic level does it drive?
The MCP1317T-29LE/OT asserts its active-high reset output when VCC falls below the fixed threshold of 2.90 V. The output drives a logic high level to the connected MCU reset pin, holding the processor in reset until the supply recovers above 2.90 V plus the hysteresis margin, preventing undefined code execution during power transitions.
How does the manual reset (MR) input on the MCP1317T-29LE/OT simplify system debug and field maintenance?
The MR pin on the MCP1317T-29LE/OT allows a single external push-button or open-drain signal to force a system reset independently of the supply voltage. Connecting a normally-open switch between MR and ground through a pull-up resistor gives a field technician or developer a hardware reset path without opening the enclosure or power-cycling the board, saving time during firmware development and on-site troubleshooting.
How does the MCP1317T-29LE/OT compare to a microcontroller's internal brownout reset for critical power-fail detection?
The MCP1317T-29LE/OT provides a dedicated external voltage supervisor with a precise 2.90 V threshold and a defined reset timeout, whereas internal brownout reset (BOR) circuits in microcontrollers often have coarser thresholds, wider tolerance bands, and cannot supervise the supply before the MCU itself is powered. An external supervisor like the MCP1317T-29LE/OT guarantees reset assertion even if the MCU's internal regulator or BOR circuit is marginal, improving system reliability in 3.3 V battery and regulated supply designs.
Which PCB footprint does the MCP1317T-29LE/OT use, and how small is it relative to a standard TO-92 device?
The MCP1317T-29LE/OT uses a SOT-23-5 package with a body measuring approximately 1.6 mm × 2.9 mm, occupying roughly 4.6 mm² of PCB area. A through-hole TO-92 package requires a footprint of about 15–20 mm² plus via drill area, meaning the SOT-23-5 saves over 70% of board space while supporting fully automated SMT reflow assembly.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.3725 | $1.37 |
| 5+ | $0.8900 | $4.45 |
| 14+ | $0.8235 | $11.53 |
| 25+ | $0.7100 | $17.75 |
| 100+ | $0.6400 | $64.00 |
| 1000+ | $0.6100 | $610.00 |
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