LD1117S50TR

@@ -0,0 +1,46 @@+# LD1117S50TR++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3++LD1117S50TR from STMicroelectronics, in a SOT-223-3. 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 | GND | power_in | Ground reference for the regulator. Return path for quiescent current and load current. |+| 2 | VOUT | power_out | Regulated 5.0 V output. Requires a minimum 10 µF capacitor to ground for stability. Delivers up to 800 mA (typ. 950 mA) with dropout ~1.1 V at 800 mA. Internally tied to the package TAB. |+| 3 | VIN | power_in | Unregulated input supply. Operating input voltage up to 15 V DC (18 V max when Iout < 20 mA). A 100 nF input decoupling capacitor is recommended. |+| 4 | TAB | power_out | Metal tab used for heat dissipation. Electrically connected internally to VOUT - must be treated as VOUT for isolation and routing purposes. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SOT-223-3 |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `LD1117S50TRS50TR`+- `LD1117S50TRV50`+- `LD1117S50TRDT50TR`+- `LD1117S50TRD50TR`++## CAD (KiCad official)++- Symbol: `LD1117S50TR`+- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`+- 3D model: SOT-223-3 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/ld1117s50tr.pdf) (44 pp, sha256 `1b80923ec6ca9161`, 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/ld1117s50tr-datasheet.pdf)

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