# L78L08A

**UMW** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SO-8

L78L08A from UMW, in a SO-8. 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 | VOUT | power_out | Regulated 8V output (7.7V min to 8.3V max at Tj=25°C) supplying up to 100mA, with a 0.1µF output capacitor recommended close to the regulator. |
| 2 | GND | power_in | Ground pin, tied to the other GND pins (2, 3, 6, 7) on the SOP-8 package. |
| 3 | GND | power_in | Ground pin, tied to the other GND pins (2, 3, 6, 7) on the SOP-8 package. |
| 4 | NC | unconnected | No internal connection. |
| 5 | NC | unconnected | No internal connection. |
| 6 | GND | power_in | Ground pin, tied to the other GND pins (2, 3, 6, 7) on the SOP-8 package. |
| 7 | GND | power_in | Ground pin, tied to the other GND pins (2, 3, 6, 7) on the SOP-8 package. |
| 8 | VIN | power_in | Unregulated input supply; the 78L08 is specified for VI from 10.5V to 23V, with a 0.33µF input capacitor recommended close to the regulator. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SO-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `L78L08A`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files: `l78l08a-etched.step` / `l78l08a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l78l08a.step` / `l78l08a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UMW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603348803739676672) (12 pp, sha256 `348b9448c5935453`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/l78l08a-datasheet.pdf)