# AP7381-50Y-13

**Diodes Incorporated** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

AP7381-50Y-13 from Diodes Incorporated, in a SOT-89. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VOUT | power_out | Regulated output voltage. Fixed 5.0V nominal on the -50 option, ±2% accuracy. Requires a >=2.2µF low-ESR ceramic capacitor to GND for stability; supplies up to 150mA (current-limited). |
| 2 | GND | power_in | Device ground and return for the internal reference/error amplifier. Ground current is typically 2.5µA at no load and ~25µA at 100mA load. |
| 3 | VIN | power_in | Unregulated supply input. Recommended operating range 3.3V to 40V (absolute max 45V). Bypass with a >=1µF ceramic capacitor close to the pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-89 |
| Category | PMIC |
| Pins | 3 |

## Ordering variants

- `AP7381-50Y-13`
- `AP7381-50Y-1350SA-7`
- `AP7381-50Y-1350V-A`

## CAD (KiCad official)

- Symbol: `AP7381-50Y-13`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `ap7381-50y-13-etched.step` / `ap7381-50y-13-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ap7381-50y-13.step` / `ap7381-50y-13.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/AP7381-50Y-13.pdf) (None pp, sha256 `657d25b1f48ab5dc`, retrieved 2026-08-17, tier: manufacturer)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/ap7381-50y-13-datasheet.pdf)