ld1117ag-50-aa3-d-r

{
  "slug": "ld1117ag-50-aa3-d-r",
  "version": "0.1.0",
  "type": "component",
  "description": "UTC Unisonic Tech Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "pmic",
    "ld1117ag-50-aa3-d-r"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ld1117ag-50-aa3-d-r.kicad_sym",
    "ld1117ag-50-aa3-d-r.kicad_mod",
    "ld1117ag-50-aa3-d-r.glb",
    "ld1117ag-50-aa3-d-r.step",
    "ld1117ag-50-aa3-d-r.lbr",
    "docs/hero.png",
    "docs/ld1117ag-50-aa3-d-r-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ld1117ag-50-aa3-d-r-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "component": {
    "mpn": "LD1117AG-50-AA3-D-R",
    "manufacturer": "UTC Unisonic Tech",
    "package": "SOT-223",
    "pin_count": 4,
    "category": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "parts": {
      "symbol": "ld1117ag-50-aa3-d-r.kicad_sym",
      "footprint": "ld1117ag-50-aa3-d-r.kicad_mod",
      "model_3d": "ld1117ag-50-aa3-d-r-etched.glb",
      "model_3d_plain": "ld1117ag-50-aa3-d-r.glb",
      "model_3d_step": "ld1117ag-50-aa3-d-r-etched.step",
      "model_3d_step_plain": "ld1117ag-50-aa3-d-r.step",
      "lbr": "ld1117ag-50-aa3-d-r.lbr"
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated positive input supply. Recommended operating range up to 15V (abs max 18V). For the 5.0V variant, VIN must be at least ~6.5V for full regulation (dropout ~1.2V at 1A). Bypass with a 10uF capacitor close to the pin."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. On fixed-output versions this pin sets the 0V reference for the internal error amplifier. Should be tied to system ground with a low-impedance return path."
      },
      {
        "number": "3",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated 5.0V output (tolerance +/-2%, 4.900V min / 5.100V max). Supplies up to 1.0A on the 'A' variant. Requires a minimum 10uF output capacitor for stability; MLCC supported per the ESR SOA graph."
      },
      {
        "number": "4",
        "name": "TAB",
        "type": "power_out",
        "description": "Large SOT-223 heat-slug tab, internally connected to VOUT. Solder to a copper pour tied to the VOUT net for thermal dissipation (theta_JA = 165 C/W for SOT-223)."
      }
    ],
    "provenance": {
      "rebuilt": "component block rebuilt 2026-10-05 from this page's own README pinout table and .kicad_sym (pins cross-checked), no re-extraction"
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "distributor_links": {
      "lcsc": "C5160420",
      "digikey": false,
      "mouser": false
    },
    "distributor_check": {
      "checked_at": "2026-10-05T19:03:02Z",
      "source": "Component Ocean /api/assign-pns + lcsc_map",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    }
  }
}