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MCP1317T-29LE
Public Made by Adomby adom
Microchip Tech Monitors & Reset Circuits, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMCP1317T-29LE
Microchip Tech · Monitors & Reset Circuits · SOT-23-5
MCP1317T-29LE from Microchip Tech, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RST | output | Push-pull active-high reset output that goes High when VDD falls below the selected reset threshold, when MR is forced low, when WDI sees no edge within the minimum time-out, or during power-up. |
| 2 | VSS | power_in | Ground reference for the device. |
| 3 | MR | input | Active-low manual reset input with internal pull-up that forces the RST output active while held low and filters noise pulses. |
| 4 | WDI | input | Watchdog timer input where an edge transition resets the watchdog counter, a falling edge starts the timer, and the standard period is 1.6 s typical. |
| 5 | VDD | power_in | Positive supply for the device, specified for a voltage range of 1.0V to 5.5V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOT-23-5 |
| Category | Power Supply Chip |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Voltage Range | VDD | 1 | 5.5 | V | 3 | ||
| Specified VDD Value to VOUT Low | VDD | 1 | V | I RST = 10 µA, V RST < 0.3V | 3 | ||
| Operating Current IDD (Reset Delay Timer Active) | IDD | 5 | 10 | µA | Reset Delay Timer Active | 3 | |
| Operating Current IDD (VDD < VTRIP) | IDD | 1 | 2 | µA | VDD < VTRIP | 3 | |
| VDD Trip Point MCP13XX-29 at +25°C | VTRIP | 2.857 | 2.9 | 2.944 | V | TA = +25°C (Note 1) | 4 |
| VDD Trip Point MCP13XX-29 over temperature | VTRIP | 2.828 | 2.9 | 2.973 | V | TA = -40°C to +125°C (Note 2) | 4 |
| Trip Point Tolerance at +25°C | -1.5 | 1.5 | % | Trip point ±1.5% from typical value; TA = +25°C (Note 1) | 3 | ||
| Trip Point Tolerance over temperature | -2.5 | 2.5 | % | Trip point ±2.5% from typical value; TA = -40°C to +125°C (Note 2) | 3 | ||
| VDD Trip Point Tempco | TTPCO | -40 | 40 | ppm/°C | 5 | ||
| Threshold Hysteresis MCP13XX-29 at +25°C | VHYS | 0.029 | 0.174 | V | TA = +25°C (Note 3) | 6 | |
| Threshold Hysteresis MCP13XX-29 over temperature | VHYS | 0.029 | 0.174 | V | TA = -40°C to +125°C | 6 | |
| RST Low-Level Output Voltage | VOL | 0.3 | V | IOL = 50 µA, 1.0V ≤ VDD ≤ 1.5V | 8 | ||
| Input Leakage Current (MR) | IIL | -1 | 1 | µA | VSS ≤ VPIN ≤ VDD | 8 | |
| Pull-up Resistance MR pin | RPU | 52 | kΩ | VDD = 5.5V | 8 | ||
| Input Pin Capacitance (MR) | CI | 100 | pF | 8 | |||
| Output Pin Capacitive Loading (RST) | CO | 50 | pF | This is the tester loading to meet the AC timing specifications. | 8 | ||
| Falling VDD Trip Point Detected to RST Active | tRPD | 650 | µs | VDD ramped from VTRIPMAX + 250 mV down to VTRIPMIN, 200 mV, VDD falling @ 5 mV/µs, CL = 50 pF (Note 1) | 9 | ||
| Reset Active Time (Standard Time Out) | tRST | 140 | 200 | 280 | ms | Standard Time Out | 9 |
| RST Rise Time after RST Active | tRT | 5 | µs | For RST 10% to 90% of VDD, CL = 50 pF (Note 1) | 9 | ||
| MR Pulse Width | tMR | 1 | µs | 10 | |||
| MR Active to RST Active | tMRD | 235 | ns | VDD = 5.0V | 10 | ||
| MR Input Noise filter | tNF | 150 | ns | VDD = 5.0V | 10 | ||
| Specified Temperature Range | TA | -40 | 125 | °C | Except MCP13XX-25 (or below) | 11 | |
| Maximum Junction Temperature | TJ | 150 | °C | 11 | |||
| Storage Temperature Range | TA | -65 | 150 | °C | 11 | ||
| Thermal Resistance, 5L-SOT-23 | JA | 220.7 | °C/W | 11 | |||
| Supply Voltage (VDD to VSS) | VDD | 7 | V | 3 | |||
| Input current (VDD) | 10 | mA | 3 | ||||
| Output current (RST) | 10 | mA | 3 | ||||
| Ambient temp with power applied | -40 | 125 | °C | 3 |
CAD (KiCad official)
- Symbol:
MCP1317T-29LE - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
mcp1317t-29le-etched.step/mcp1317t-29le-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mcp1317t-29le.step/mcp1317t-29le.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (54 pp, sha256
f313bca289b277f3, retrieved 2026-10-27, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed (audit)), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).