# L7805ABD2T-TR

**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-263-2

L7805ABD2T-TR from STMicroelectronics, in a TO-263-2. 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 | INPUT | power_in | Unregulated positive DC input. Absolute max VI = 35 V for 5-18 V output versions. Recommended input capacitor CI = 0.33 uF close to the pin for stability. Dropout voltage ~2 V at IO = 1 A, so VI should be at least VO + 2 V (typ. 7.5 V min for the 5 V part). |
| 2 | GROUND | power_in | Common ground reference for input and output. Electrically connected to the exposed metal tab of the D2PAK, which serves as the primary heat-sinking surface. Quiescent current (~4.3 mA typ) flows out of this pin. |
| 3 | OUTPUT | power_out | Regulated +5 V output, 4.8-5.2 V over line/load/temperature (A version). Delivers up to 1.5 A peak (typically specified at 1 A) with internal current limiting, SOA and thermal-shutdown protection. Recommended output capacitor CO = 0.1 uF for transient response. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TO-263-2 |
| Category | PMIC |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `L7805ABD2T-TR`
- `L7805ABD2T-TRDT-TR`
- `L7805ABD2T-TRDT`
- `L7805ABD2T-TRCV`
- `L7805ABD2T-TRABV`
- `L7805ABD2T-TRCP`
- `L7805ABD2T-TRABP`

## CAD (KiCad official)

- Symbol: `L7805ABD2T-TR`
- Footprint: `Package_TO_SOT_SMD:TO-263-2`
- 3D model: TO-263-2 (KiCad packages3D, STEP)
- 3D model files: `l7805abd2t-tr-etched.step` / `l7805abd2t-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l7805abd2t-tr.step` / `l7805abd2t-tr.glb` are the bare package body.

## 3D model downloads

Two STEP files. Same geometry, different body top:

| File | Size | Use it when |
|---|---|---|
| [`l7805abd2t-tr.step`](l7805abd2t-tr.step) | 108 KB | You want the bare part, or you mark your own boards. |
| [`l7805abd2t-tr-etched.step`](l7805abd2t-tr-etched.step) | 2.0 MB | You want the part with `L7805ABD2T-TR` already on it. |

The marking in the etched file is real recessed geometry cut into the solid, not a
texture or a decal: 531 faces against 79 in the bare model. It
survives export, section views, and rendering in any CAD tool, and it drops straight
into KiCad or Fusion with no extra setup.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/l7805abd2t-tr.pdf) (55 pp, sha256 `f7b390b5c05e0aba`, 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/l7805abd2t-tr-datasheet.pdf)