# MCP111T-475E

**Microchip Tech** · Monitors & Reset Circuits · SOT-23

MCP111T-475E from Microchip Tech, in a SOT-23. 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 | VOUT | output | Output state is high when VDD is above VTRIP while falling (VDD rising: above VTRIP + VHYS) and low when VDD is below VTRIP; MCP111 has an open-drain output that requires an external pull-up resistor. |
| 2 | VSS | power_in | Ground reference for the device. |
| 3 | VDD | power_in | Positive power supply; the operating voltage range is 1.0 V to 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOT-23 |
| Category | Power Management ICs |
| Pins | 3 |

## 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 |  | 2 |
| Specified VDD Value to VOUT low | VDD | 1 |  |  | V | I RST = 10 µA, V RST < 0.2V | 2 |
| Operating Current | IDD |  |  | 1.75 | µA |  | 2 |
| VDD Trip Point MCP1XX-475 | VTRIP | 4.561 | 4.63 | 4.7 | V | TA = +25°C (Note 1) | 2 |
| VDD Trip Point MCP1XX-475 | VTRIP | 4.514 | 4.63 | 4.746 | V | Note 2 | 2 |
| Threshold Hysteresis MCP1XX-475 | VHYS | 0.046 |  | 0.278 | V | TA = +25°C | 3 |
| VOUT Low-level Output Voltage | VOL |  |  | 0.4 | V | IOL = 500 µA, VDD = VTRIP(MIN) | 3 |
| Open-drain High Voltage on Output | VODH |  |  | 13.5 | V | MCP111 only, VDD = 3.0V, Time voltage > 5.5V applied 100s, current into pin limited to 2 mA, +25°C operation recommended, Note 3, Note 4 | 3 |
| Specified Temperature Range | TA | -40 |  | 125 | °C | Except MCP1XX-195 | 4 |
| Input current (VDD) |  |  |  | 10 | mA |  | 2 |
| Output current (RST) |  |  |  | 10 | mA |  | 2 |
| Rated Rise Time of VDD |  |  |  | 100 | V/µs |  | 2 |
| All inputs and outputs (except RST) w.r.t. VSS |  | -0.6 |  |  | V | Upper limit printed as VDD + 1.0V | 2 |
| RST output w.r.t. VSS |  | -0.6 |  | 13.5 | V |  | 2 |
| Ambient temp with power applied |  | -40 |  | 125 | °C |  | 2 |
| Storage Temperature Range | TA | -65 |  | 150 | °C |  | 4 |
| Maximum Junction Temperature | TJ |  |  | 150 | °C |  | 4 |
| ESD protection on all pins |  |  |  | 2 | kV | All pins | 2 |
| Thermal Resistance, 3L-SOT23 | θJA |  | 336 |  | °C/W |  | 4 |

## CAD (KiCad official)

- Symbol: `MCP111T-475E`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mcp111t-475e-etched.step` / `mcp111t-475e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mcp111t-475e.step` / `mcp111t-475e.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Microchip Tech datasheet](https://ww1.microchip.com/downloads/en/DeviceDoc/20001889F.pdf) (32 pp, sha256 `f35d42ef4a6cb47e`, retrieved 2026-11-05, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), 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).

[Datasheet PDF](docs/mcp111t-475e-datasheet.pdf)