LD1117AS18TR

@@ -0,0 +1,45 @@+# LD1117AS18TR++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3++LD1117AS18TR 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 | ADJ/GND | power_in | Ground reference pin for the fixed-output versions (LD1117AS18 uses this pin as GND). On the adjustable variant this same pin is the ADJ feedback input (VREF = 1.25 V to the external divider). Connect to system ground for the LD1117AS18TR (1.8 V fixed). |+| 2 | VOUT | power_out | Regulated 1.8 V output. Sources up to 1 A (1.2 A typical current limit). Requires a minimum 10 µF output capacitor to GND for loop stability. The SOT-223 tab is internally connected to this pin. |+| 3 | VIN | power_in | Unregulated DC input supply. Operating input voltage up to 10 V (absolute max 15 V). Dropout ≤1.15 V typ at 1 A, so VIN must be ≥ VOUT + VDROPOUT. A 100 nF input capacitor is recommended close to the pin. |+| TAB | VOUT | power_out | SOT-223 thermal tab, internally shorted to the VOUT pin (pin 2). Provides the primary heat-sinking path (RthJC = 15 °C/W, RthJA = 110 °C/W). Solder to a copper pour tied to VOUT to improve thermal performance. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SOT-223-3 |+| Category | PMIC |+| Pins | 4 |++## Ordering variants++- `LD1117AS18TR`+- `LD1117AS18TRLD1117ADT18TR`+- `LD1117AS18TRLD1117AV33`++## CAD (KiCad official)++- Symbol: `LD1117AS18TR`+- 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](docs/ld1117as18tr-datasheet.pdf) (24 pp, sha256 `5cf3aab5b1478366`, 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/ld1117as18tr-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "ld1117as18tr",+  "version": "0.1.0",+  "type": "component",+  "description": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "pmic",+    "ld1117as18tr"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "ld1117as18tr.kicad_sym",+    "ld1117as18tr.kicad_mod",+    "ld1117as18tr.glb",+    "ld1117as18tr.step",+    "ld1117as18tr.lbr",+    "docs/hero.png",+    "docs/ld1117as18tr-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file