MCP1320T-29LE/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
MCP1320T-29LE/OT is a single-channel voltage supervisor and microprocessor reset IC from Microchip with a fixed 2.90 V threshold and active-low open-drain reset output, in a 5-pin SOT-23 package. It asserts reset for a fixed delay after VCC falls below the threshold, ensuring reliable MCU startup and brownout detection. Used in embedded systems, portable devices, and industrial controllers needing precise undervoltage protection.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP1320T-29LE/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6750(MOQ 4)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 2.90 V reset threshold provides precise undervoltage detection for 3.3 V rail systems
- Active-low open-drain reset output compatible with direct MCU reset pin connection
- Manual reset input pin allows external pushbutton reset with debounce-free assertion
- Ultra-low quiescent current for minimal power draw in battery-operated applications
- 5-pin SOT-23 package enables sub-1 mm² board footprint ideal for space-constrained designs
Applications
MCP1320T-29LE/OT is used in microcontroller-based embedded systems to guarantee clean power-on reset and brownout recovery when the 3.3 V rail drops below 2.90 V during startup or transient events. It suits portable handheld instruments and IoT sensor nodes where preventing code execution during incomplete power ramps avoids data corruption or communication faults. The manual reset pin also makes it a practical choice for front-panel reset buttons in industrial control modules without requiring debounce circuitry.
Specifications
| 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 |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| 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
At what supply voltage does MCP1320T-29LE/OT assert its reset output?
MCP1320T-29LE/OT asserts its active-low reset output when VCC drops below the fixed 2.90 V threshold, and holds the output asserted for a specified minimum reset timeout period after VCC rises back above the threshold. This 2.90 V trip point makes it ideal for supervising 3.3 V microcontroller supply rails in embedded systems operating across a -40°C to 85°C temperature range.
How does the manual reset input on MCP1320T-29LE/OT simplify front-panel reset design?
The MRP (manual reset) pin asserts the open-drain reset output when pulled low by an external pushbutton, eliminating the need for RC debounce networks or schmitt-trigger buffers in the reset path. Connecting a 100 nF capacitor and a 10 kΩ pull-up is all that is required on the 5-pin SOT-23 package, reducing the discrete component count by 3 to 5 parts compared to discrete reset circuits on a 3.3 V MCU board.
Why choose a fixed-threshold supervisor like MCP1320T-29LE/OT over an adjustable-threshold alternative?
A fixed 2.90 V threshold eliminates external resistor divider tolerances that introduce ±2% to ±5% threshold uncertainty in adjustable supervisors, providing tighter reset point accuracy across temperature. For production designs targeting a single 3.3 V supply, the fixed-threshold part also reduces BOM cost by two resistors and removes the risk of threshold shift from resistor aging over a 10-year product lifetime in industrial environments.
How small is the PCB footprint for MCP1320T-29LE/OT and what assembly process does it support?
The 5-pin SOT-23 package measures approximately 2.9 mm × 1.6 mm, occupying under 5 mm² of PCB area including typical land pattern clearances. It is fully compatible with standard SMT reflow soldering at 260°C peak, and its low profile of 1.1 mm height suits conformal-coated assemblies in industrial enclosures where component height clearance is limited to 2 mm or less.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 4+ | $0.7588 | $3.04 |
| 8+ | $0.7549 | $6.04 |
| 16+ | $0.6750 | $10.80 |
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