# LR1117DSX

**LRC** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

LR1117DSX from LRC, in a SOT-223. 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 | Gnd | power_in | Ground pin of the fixed-voltage version; the datasheet names it only as Ground and gives no electrical limit for it. |
| 2 | Vout | power_out | Regulated output for the fixed versions (1.2V, 1.8V, 2.5V, 2.85V, 3.3V, 5V, ±2%), rated for a maximum output current of 1.4A and used with a 10uF tantalum or MLCC output capacitor. |
| 3 | Vin | power_in | Input supply pin with a maximum input voltage of 15V under recommended operating conditions, used with a 10uF input capacitor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOT-223 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `LR1117DSX`
- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`
- 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files: `lr1117dsx-etched.step` / `lr1117dsx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lr1117dsx.step` / `lr1117dsx.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LRC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603169008116121600) (9 pp, sha256 `67c0164382c5206c`, retrieved 2026-10-09, tier: lcsc)
- **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/lr1117dsx-datasheet.pdf)