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LD1117S33TR
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+46@@ -0,0 +1,46 @@+# LD1117S33TR++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223++LD1117S33TR 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 / regulator common return. 0 V reference for VIN and VOUT. |+| 2 | VOUT | power_out | Regulated 3.3 V output, up to 800 mA. Requires a 10 µF minimum capacitor to ground for loop stability. Electrically connected to the SOT-223 tab. |+| 3 | VIN | power_in | Unregulated DC input supply. Recommended 100 nF bypass to GND. Absolute maximum 15 V (18 V when IOUT < 20 mA); must exceed VOUT by ~1 V (typical dropout) at full load. |+| 4 | TAB | power_out | Metal heat-spreader tab, internally bonded to VOUT. Solder to a copper pour for thermal dissipation; the pour is at VOUT potential and must be treated as such. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SOT-223 |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `LD1117S33TRS33TR`+- `LD1117S33TRDT33TR`+- `LD1117S33TRD33TR`+- `LD1117S33TRV33`++## CAD (KiCad official)++- Symbol: `LD1117S33TR`+- 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://www.st.com/resource/en/datasheet/ld1117s33tr.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/ld1117s33tr-datasheet.pdf)
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