# MCP9800A0T-M

**Microchip Tech** · Temperature Sensors · SOT-23-5

MCP9800A0T-M 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 | VDD | power_in | Power supply input; the operating voltage specified in the DC electrical specification table is applied to this pin. |
| 2 | GND | power_in | System ground pin. |
| 3 | ALERT | output | Open-drain temperature alert output that signals when the ambient temperature goes beyond the user-programmed temperature limit. |
| 4 | SCLK | input | Serial clock input; all communication and timing is relative to this pin, and the clock is generated by the host controller on the bus. |
| 5 | SDA | bidirectional | Bidirectional serial data pin used to transmit data to and from the host controller, which requires a pull-up resistor to output data. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOT-23-5 |
| Category | Sensors |
| 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 | 2.7 |  | 5.5 | V |  | 3 |
| Operating Current | IDD |  | 200 | 400 | µA | Continuous Operation | 3 |
| Shutdown Current | ISHDN |  | 0.1 | 1 | µA | Shutdown mode | 3 |
| Temperature Sensor Accuracy, 12-bit, -10°C to +85°C | TACY | -1 |  | 1 | °C | -10°C < TA +85°C, VDD = 3.3V | 3 |
| Temperature Sensor Accuracy, 12-bit, -10°C to +125°C | TACY | -2 |  | 2 | °C | -10°C < TA +125°C, VDD = 3.3V | 3 |
| Temperature Sensor Accuracy, 12-bit, -55°C to +125°C | TACY | -3 |  | 3 | °C | -55°C < TA +125°C, VDD = 3.3V | 3 |
| Conversion Time, 9-bit Resolution | tCONV |  | 30 | 75 | ms | 33 samples/sec (typical) | 3 |
| Conversion Time, 10-bit Resolution | tCONV |  | 60 | 150 | ms | 17 samples/sec (typical) | 3 |
| Conversion Time, 11-bit Resolution | tCONV |  | 120 | 300 | ms | 8 samples/sec (typical) | 3 |
| Conversion Time, 12-bit Resolution | tCONV |  | 240 | 600 | ms | 4 samples/sec (typical) | 3 |
| ALERT High-level Current | IOH |  |  | 1 | µA | VOH = 5V | 3 |
| ALERT Low-level Voltage | VOL |  |  | 0.4 | V | IOL= 3 mA | 3 |
| Serial Input Current | IIN | -1 |  | 1 | µA |  | 4 |
| SDA Low-level Voltage | VOL |  |  | 0.4 | V | IOL= 3 mA | 4 |
| SDA High-level Current | IOH |  |  | 1 | µA | VOH = 5V | 4 |
| SDA Low-level Current | IOL | 6 |  |  | mA | VOL = 0.6V | 4 |
| Specified Temperature Range | TA | -55 |  | 125 | °C | Note 1 | 4 |
| Operating Temperature Range | TA | -55 |  | 125 | °C |  | 4 |
| Storage Temperature Range | TA | -65 |  | 150 | °C |  | 4 |
| Serial Port Frequency (I2C) | fSC | 0 |  | 400 | kHz | I2C MCP9800/01 | 5 |
| Clock Period | tSC | 2.5 |  |  | µs |  | 5 |
| Low Clock | tLOW | 1.3 |  |  | µs |  | 5 |
| High Clock | tHIGH | 0.6 |  |  | µs |  | 5 |
| Rise Time (SCLK, SDA) | tR | 20 |  | 300 | ns | 10% to 90% of VDD (SCLK, SDA) | 5 |
| Fall Time (SCLK, SDA) | tF | 20 |  | 300 | ns | 90% to 10% of VDD (SCLK, SDA) | 5 |
| Data Setup Before SCLK High | tSU-DATA | 0.1 |  |  | µs |  | 5 |
| Data Hold After SCLK Low | tH-DATA | 0 |  | 0.9 | µs |  | 5 |
| Start Condition Setup Time | tSU-START | 0.6 |  |  | µs |  | 5 |
| Start Condition Hold Time | tH-START | 0.6 |  |  | µs |  | 5 |
| Stop Condition Setup Time | tSU-STOP | 0.6 |  |  | µs |  | 5 |
| Bus Idle | tIDLE | 1.3 |  |  | µs |  | 5 |
| Supply Voltage (VDD) Absolute Maximum | VDD |  |  | 6 | V |  | 3 |
| Voltage at all Input/Output pins |  | -0.3 |  | 5.5 | V | relative to GND | 3 |
| Storage Temperature (absolute maximum) |  | -65 |  | 150 | °C |  | 3 |
| Ambient Temperature with power applied |  | -55 |  | 125 | °C | power applied | 3 |
| Junction Temperature | TJ |  |  | 150 | °C |  | 3 |
| Latch-Up Current at each pin |  | -200 |  | 200 | mA | each pin | 3 |
| ESD protection on all pins |  |  |  | 4 | kV | HBM:MM (4 kV:400V) | 3 |
| Thermal Resistance, 5L-SOT23 | θJA |  | 256 |  | °C/W |  | 4 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | MS = Plastic Micro Small Outline (MSOP), 8-lead SN = Plastic SOIC, (150 mil Body), 8-lead | 39 |

## CAD (KiCad official)

- Symbol: `MCP9800A0T-M`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `mcp9800a0t-m-etched.step` / `mcp9800a0t-m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mcp9800a0t-m.step` / `mcp9800a0t-m.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8570962967880015872) (42 pp, sha256 `258fb1fd5fe119dc`, retrieved 2026-10-18, tier: lcsc)
- **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/mcp9800a0t-m-datasheet.pdf)