# MIC37302WU-TR

**Microchip Tech** · Linear Voltage Regulators (LDO) · TO-263-5

MIC37302WU-TR from Microchip Tech, in a TO-263-5. 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 | EN | input | Enable input, CMOS/TTL compatible: logic high = enable, logic low = shutdown (VEN ≤ 0.8V shutdown, ≥ 2.25V enable); do not leave floating. |
| 2 | VIN | power_in | Input voltage supplying current to the output power device, operating range 2.25V to 6.0V. |
| 3 | GND | power_in | Ground; the TAB is connected to ground. |
| 4 | VOUT | power_out | Regulator output, 3A minimum output current, adjustable from 1.24V to 5.5V. |
| 5 | ADJ | input | Adjustable regulator feedback input (1.240V reference) connected to a resistor voltage divider. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TO-263-5 |
| Category | Power Management ICs |
| Pins | 6 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output Voltage Accuracy | VOUT | -1 |  | 1 | % | IL = 10 mA | 4 |
| Output Voltage Accuracy (load/line) | VOUT | -2 |  | 2 | % | 10 mA ≤ IOUT ≤ IL(MAX), VOUT + 1V ≤ VIN ≤ 6V | 4 |
| Output Voltage Line Regulation | ΔVOUT/ΔVIN |  | 0.02 | 0.5 | % | VIN = VOUT + 1.0V to 6.0V; IL = 10 mA | 4 |
| Output Voltage Load Regulation | ΔVOUT/VOUT |  | 0.2 | 1 | % | IL = 10 mA to 3A | 4 |
| Dropout Voltage at 1.5A | VDO |  | 175 | 350 | mV | IL = 1.5A (For S-PAK-5, TO-263-5) | 4 |
| Dropout Voltage at 3.0A | VDO |  | 300 | 500 | mV | IL = 3.0A (For S-PAK-5, TO-263-5) | 4 |
| Ground Pin Current | IGND |  | 27 | 40 | mA | IL = 3A | 4 |
| Ground Pin Current In Shutdown | IGND-SHDN |  | 1 | 5 | μA | VIL ≤ 0.5V, VIN = VOUT +1V | 4 |
| Current Limit | ILIM |  | 4.75 | 6.5 | A | VOUT = 0V | 4 |
| Start-Up Time | tSTART |  | 170 | 500 | μs | VEN = VIN, IOUT = 10 mA, COUT = 47 μF | 4 |
| Enable Input Threshold (enable) | VEN | 2.25 |  |  | V | Regulator Enable | 5 |
| Enable Input Threshold (shutdown) | VEN |  |  | 0.8 | V | Regulator Shutdown | 5 |
| Enable Pin Input Current (shutdown) | IEN |  |  | 2 | μA | VIL ≤ 0.8V (Regulator Shutdown) | 5 |
| Enable Pin Input Current (enable) | IEN | 1 | 15 | 30 | μA | VIH ≥ 2.25V (Regulator Enable) | 5 |
| Reference Voltage | VREF | 1.228 | 1.24 | 1.252 | V |  | 5 |
| Reference Voltage (over temperature) | VREF | 1.215 |  | 1.265 | V | -40°C < TJ < +125°C | 5 |
| Adjust Pin Bias Current | IADJ |  | 40 | 80 | nA |  | 5 |
| Adjust Pin Bias Current (over temperature) | IADJ |  |  | 120 | nA | -40°C < TJ < +125°C | 5 |
| Supply Voltage (absolute maximum) | VIN |  |  | 6.5 | V |  | 4 |
| Enable Input Voltage (absolute maximum) | VEN |  |  | 6.5 | V |  | 4 |
| Storage Temperature | TS | -65 |  | 150 | °C |  | 4 |
| ESD Rating |  |  |  | 2 | kV |  | 4 |
| Supply Voltage (operating) | VIN | 2.25 |  | 6 | V |  | 4 |
| Enable Voltage (operating) | VEN | 0 |  | 6 | V |  | 4 |
| Junction Temperature | TJ | -40 |  | 125 | °C |  | 4 |
| Thermal Resistance TO-263-5 | θJC |  | 6.3 |  | °C/W |  | 6 |

## CAD (KiCad official)

- Symbol: `MIC37302WU-TR`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files: `mic37302wu-tr-etched.step` / `mic37302wu-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mic37302wu-tr.step` / `mic37302wu-tr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](docs/mic37302wu-tr-datasheet.pdf) (28 pp, sha256 `63cce04b54ededab`, retrieved 2026-10-23, tier: manufacturer)
- **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/mic37302wu-tr-datasheet.pdf)