# LM7805CS2

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

LM7805CS2 from HGSEMI, in a TO-263-2. 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 | Vcc | power_in | Unregulated supply input to the regulator; the absolute maximum input voltage VIN is 35 V and the LM7805C input voltage range is 7.5 V to 35 V. |
| 2 | GND | power_in | Ground reference pin of the regulator. |
| 3 | OUT | power_out | Regulated output of the LM7805C, 4.80 V to 5.20 V at Io=0.5A, with a maximum output current IOM of 1.5 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| 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 | 4.8 | 5 | 5.2 | V | VI=10V, Io=0.5A, PD≤15W | 3 |
| Voltage regulation (line) | REGv |  | 3 | 100 | mV | VI=7.5~25V | 3 |
| Load regulation | REGL |  | 15 | 100 | mV | Io=5mA~1.5A | 3 |
| Input voltage | VI | 7.5 |  | 35 | V |  | 3 |
| Ripple rejection | Srip | 62 |  |  | dB | VI=8~18V, Io=100mA, f=120Hz | 3 |
| Input voltage (absolute maximum) | VIN |  |  | 35 | V |  | 3 |
| Power dissipation | PD |  |  | 15 | W |  | 3 |
| Operating ambient temperature | Tamb | 0 |  | 125 | ℃ |  | 3 |
| Storage temperature | Tstg | -55 |  | 150 | ℃ |  | 3 |
| Lead temperature (soldering) | TLEAD |  |  | 245 | ℃ | Soldering, 10 s | 3 |
| Maximum output current | IOM |  | 1.5 |  | A |  | 3 |
| Output voltage temperature coefficient | ∆V/T |  | -0.3 |  | mV/℃ | Io=5mA, Tj=0~85℃ | 3 |
| Output noise voltage | VNO |  | 40 |  | μV | f=10Hz~100kHz | 3 |

## CAD (KiCad official)

- Symbol: `LM7805CS2`
- Footprint: `Package_TO_SOT_SMD:TO-263-2`
- 3D model: TO-263-2 (KiCad packages3D, STEP)
- 3D model files: `lm7805cs2-etched.step` / `lm7805cs2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm7805cs2.step` / `lm7805cs2.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603003563161772032) (11 pp, sha256 `c32bf5045fcfe780`, retrieved 2026-10-18, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/lm7805cs2-datasheet.pdf)