LD1117S12CTR

@@ -0,0 +1,48 @@+# LD1117S12CTR++**STMicroelectronics** · Dropout Regulators(LDO) · SOT-223++LD1117S12CTR from STMicroelectronics, in a SOT-223. 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 / common return for the regulator. Reference for both VIN and VOUT. |+| 2 | VOUT | power_out | Regulated 1.2 V fixed output (±1% at 25 °C), up to 800 mA. Requires a minimum 10 µF output capacitor for loop stability. Electrically common with the tab. |+| 3 | VIN | power_in | Unregulated input supply. Must be at least VOUT + Vdropout (~1 V typ.) above VOUT. Absolute maximum 15 V. |+| TAB | VOUT | power_out | Thermal tab, electrically connected to VOUT. Used both for heat dissipation and as the regulated output node. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SOT-223 |+| Category | Power Management ICs |+| Pins | 4 |++## Ordering variants++Same part, different packaging or reel option.++- `LD1117S12CTR`+- `LD1117S12CTRV12`+- `LD1117S12CTRDT12`+- `LD1117S12CTRD12`++## CAD (KiCad official)++- Symbol: `LD1117S12CTR`+- Footprint: `Package_TO_SOT_SMD:SOT-223-3_TabPin2`+- 3D model: SOT-223 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586198658081153024) (44 pp, sha256 `1b80923ec6ca9161`, retrieved 2026-08-17, tier: lcsc)+- **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/ld1117s12ctr-datasheet.pdf)

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