# SK7905U

**Shikues** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252

SK7905U from Shikues, in a TO-252. 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 | GND | power_in | Ground / common return pin. Reference for both the negative input and the negative output voltage. On the TO-252 package this is also the tab-adjacent pin. |
| 2 | VIN | power_in | Negative input supply pin. Accepts the unregulated negative rail; absolute maximum -35V. Recommended operating range for -5V output is approximately -7V to -25V. A 2.2 uF input capacitor to GND is recommended. |
| 3 | VOUT | power_out | Regulated negative output pin. Provides -5.0V (typ) at up to 1.5A with a dropout voltage of ~2V at 1A. A 1 uF output capacitor to GND is recommended for stability. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shikues |
| Package | TO-252 |
| Category | PMIC |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `SK7905U`
- `SK7905AU`
- `SK7912AU`
- `SK7912U`

## CAD (KiCad official)

- Symbol: `SK7905U`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `sk7905u-etched.step` / `sk7905u-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sk7905u.step` / `sk7905u.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shikues datasheet](docs/sk7905u-datasheet.pdf) (6 pp, sha256 `0762a6e682b0350c`, retrieved 2026-08-17, tier: lcsc)
- **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/sk7905u-datasheet.pdf)