# MCP1701AT-3302I

**Microchip Tech** · Linear Voltage Regulators (LDO) · SOT-23A-3

MCP1701AT-3302I from Microchip Tech, in a SOT-23A-3. 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 | GND | power_in | Regulator ground; tie to the negative side of the output and input capacitors, only the ~2 µA (typ.) LDO bias current flows out of this pin and output regulation is referenced to it. |
| 2 | VOUT | power_out | Regulated voltage output (3.3V for this part); connect to the positive side of the load and output capacitor (minimum 1 µF), carrying a current equal to the DC load current. |
| 3 | VIN | power_in | Unregulated supply input, operating up to 10 V (absolute maximum +12V); connect the input supply and a 1 µF input capacitor placed close to this pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOT-23A-3 |
| Category | Power Supply Chip |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum Output Current | IOUTMAX | 150 |  |  | mA | VOUT = 3.3V (VIN = VR + 1.0V) | 3 |
| Load Regulation | ΔVOUT/VOUT | -2.72 | 1.3 | 2.72 | % | VOUT = 3.3V, 1 mA ≤ IOUT ≤ 80 mA (typ ±1.3) | 3 |
| Dropout Voltage | VIN - VOUT |  | 400 | 700 | mV | IOUT = 150 mA, VR = 3.3V | 3 |
| Input Quiescent Current | IQ |  | 2 | 4.5 | µA | VIN = VR + 1.0V | 3 |
| Line Regulation | ΔVOUT•100/ΔVIN•VOUT |  | 0.2 | 0.3 | %/V | IOUT = 40 mA, (VR +1) ≤ VIN ≤ 10.0V | 3 |
| Input Voltage | VIN |  |  | 10 | V |  | 3 |
| Temperature Coefficient of Output Voltage | TCVOUT |  | 100 |  | ppm/°C | IOUT = 40 mA, -40°C ≤ TA ≤ +85°C (typ ±100) | 3 |
| Output Rise Time | TR |  | 200 |  | µs | 10% VR to 90% VR, VIN = 0V to VR +1V, RL = 25Ω resistive | 3 |
| Input Voltage (absolute maximum) | VIN |  |  | 12 | V |  | 3 |
| Output Current (peak) | IOUT |  |  | 500 | mA |  | 3 |
| Output Voltage (absolute maximum) | VOUT | -0.3 |  | 0.3 | V | (GND, 0.3V) to (VIN + 0.3V) | 3 |
| Continuous Power Dissipation 3-Pin SOT-23A | PD |  |  | 150 | mW | 3-Pin SOT-23A | 3 |
| Specified Temperature Range (I) | TA | -40 |  | 85 | °C |  | 4 |
| Storage Temperature Range | TA | -40 |  | 125 | °C |  | 4 |
| Thermal Resistance, 3L-SOT-23A | θJA |  | 335 |  | °C/W | Minimum trace width single layer application | 4 |
| Thermal Resistance, 3L-SOT-23A | θJA |  | 230 |  | °C/W | Typical FR4, 4-layer application | 4 |

## CAD (KiCad official)

- Symbol: `MCP1701AT-3302I`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23A-3 (KiCad packages3D, STEP)
- 3D model files: `mcp1701at-3302i-etched.step` / `mcp1701at-3302i-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mcp1701at-3302i.step` / `mcp1701at-3302i.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/21991c.pdf) (22 pp, sha256 `6d053cb4d8e5ca07`, retrieved 2026-10-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/mcp1701at-3302i-datasheet.pdf)