# SD5088A28E

**SHOUDING** · Linear Voltage Regulators (LDO) · SOT-89-3

SD5088A28E from SHOUDING, in a SOT-89-3. 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 | Vss | power_in | Ground pin of the regulator. |
| 2 | Vin | power_in | Voltage input; maximum input voltage is 6.5V, and the device is specified with Vin = Vout+1V. |
| 3 | Vout | power_out | Regulated voltage output (2.8V ±2% for the A28 option) delivering up to 300mA, with Vout limited to Vss-0.3V to Vout+0.3V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SHOUDING |
| Package | SOT-89-3 |
| Category | Power Management ICs |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `SD5088A28E`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `sd5088a28e-etched.step` / `sd5088a28e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sd5088a28e.step` / `sd5088a28e.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SHOUDING datasheet](docs/sd5088a28e-datasheet.pdf) (9 pp, sha256 `6caae5d10f027a64`, retrieved 2026-10-23, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/sd5088a28e-datasheet.pdf)