# LM7805

**YONGYUTAI** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-263

LM7805 from YONGYUTAI, in a TO-263. 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 | IN | power_in | Unregulated input voltage pin, absolute maximum 35 V, with 7 V to 20 V used for the 5 V output electrical characteristics. |
| 2 | GND | power_in | Ground reference pin for the regulator, shown as terminal 2 in the block diagram and TO-263 pinout. |
| 3 | OUT | power_out | Regulated 5 V output (4.8 V to 5.2 V at Tj=25 C) delivering up to 1.0 A with current limiting and thermal shutdown. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YONGYUTAI |
| Package | TO-263 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `LM7805`
- Footprint: `Package_TO_SOT_SMD:TO-263-2`
- 3D model: TO-263 (KiCad packages3D, STEP)
- 3D model files: `lm7805-etched.step` / `lm7805-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm7805.step` / `lm7805.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YONGYUTAI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603382428249432064) (4 pp, sha256 `2aec7bcd338fd68d`, 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/lm7805-datasheet.pdf)