# L7805ACD2T-TR

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

L7805ACD2T-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 DC input voltage to the regulator; absolute maximum 35 V for the 5 V output version, with a minimum input-output differential (dropout voltage) of about 2 V at IO = 1 A needed to maintain regulation. |
| 2 | GROUND | power_in | Common/ground reference terminal for the regulator, internally tied to the package tab; the device has no external sense lead so ground-loop and lead-resistance drops should be minimized. |
| 3 | OUTPUT | power_out | Regulated positive output voltage, 5 V nominal (4.9 to 5.1 V at TJ = 25 °C for the A-version), capable of supplying up to 1.5 A output current with internal current limiting, thermal shutdown and SOA protection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TO-263-2 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage | VO | 4.9 | 5 | 5.1 | V | TJ = 25°C | 9 |
| Output voltage | VO | 4.8 | 5 | 5.2 | V | IO = 5 mA to 1 A, VI = 7.5 to 18 V | 9 |
| Line regulation | ΔVO |  | 7 | 50 | mV | VI = 7.5 to 25 V, IO = 500 mA, TJ = 25°C | 9 |
| Line regulation | ΔVO |  | 10 | 50 | mV | VI = 8 to 12 V | 9 |
| Line regulation | ΔVO |  | 2 | 25 | mV | VI = 8 to 12 V, TJ = 25°C | 9 |
| Load regulation | ΔVO |  | 25 | 100 | mV | IO = 5 mA to 1 A | 9 |
| Load regulation | ΔVO |  | 30 | 100 | mV | IO = 5 mA to 1.5 A, TJ = 25°C | 9 |
| Load regulation | ΔVO |  | 8 | 50 | mV | IO = 250 to 750 mA | 9 |
| Quiescent current | Iq |  | 4.3 | 6 | mA | TJ = 25°C | 9 |
| Quiescent current | Iq |  |  | 6 | mA |  | 9 |
| Quiescent current change | ΔIq |  |  | 0.8 | mA | VI = 8 to 23 V, IO = 500 mA | 9 |
| Quiescent current change | ΔIq |  |  | 0.5 | mA | IO = 5 mA to 1 A | 9 |
| Dropout voltage | Vd |  |  | 2 | V | IO = 1 A, TJ = 25°C | 9 |
| DC input voltage (for VO = 5 to 18 V) | VI |  |  | 35 | V | for VO = 5 to 18 V | 7 |
| Storage temperature range | TSTG | -65 |  | 150 | °C |  | 7 |
| Operating junction temperature range | TOP | 0 |  | 125 | °C | for L78xxC, L78xxAC | 7 |
| Supply voltage rejection | SVR |  | 68 |  | dB | VI = 8 to 18 V, f = 120 Hz, IO = 500 mA | 9 |
| Output noise voltage | eN |  | 10 |  | µV/VO | TA = 25°C, B = 10 Hz to 100 kHz | 9 |
| Output resistance | RO |  | 17 |  | mΩ | f = 1 kHz | 9 |
| Short circuit current | Isc |  | 0.2 |  | A | VI = 35 V, TA = 25°C | 9 |
| Short circuit peak current | Iscp |  | 2.2 |  | A | TJ = 25°C | 9 |
| Output voltage drift | ΔVO/ΔT |  | -1.1 |  | mV/°C |  | 9 |
| Thermal resistance junction-case (D2PAK) | RthJC |  | 3 |  | °C/W | D²PAK | 7 |
| Thermal resistance junction-ambient (D2PAK) | RthJA |  | 62.5 |  | °C/W | D²PAK | 7 |

## CAD (KiCad official)

- Symbol: `L7805ACD2T-TR`
- Footprint: `Package_TO_SOT_SMD:TO-263-2`
- 3D model: TO-263-2 (KiCad packages3D, STEP)
- 3D model files: `l7805acd2t-tr-etched.step` / `l7805acd2t-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l7805acd2t-tr.step` / `l7805acd2t-tr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586176219558137856) (58 pp, sha256 `d975015f790fef7e`, retrieved 2026-09-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-sonnet-5` (text+vision), consensus `claude-opus-4-8` (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/l7805acd2t-tr-datasheet.pdf)