LM317T-DG

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm317t-dg",
  "title": "LM317T-DG",
  "brief": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management (pmic)",
    "lm317t-dg",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "LM317T-DG",
    "manufacturer": "STMicroelectronics",
    "package": "TO-220",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886954125496320",
    "parts": {
      "symbol": "lm317t-dg.kicad_sym",
      "footprint": "lm317t-dg.kicad_mod",
      "model_3d": "lm317t-dg-etched.glb",
      "model_3d_plain": "lm317t-dg.glb",
      "model_3d_step": "lm317t-dg-etched.step",
      "model_3d_step_plain": "lm317t-dg.step",
      "lbr": "lm317t-dg.lbr"
    },
    "distributor_links": {
      "lcsc": "C18718"
    },
    "pins": [
      {
        "number": "1",
        "name": "ADJ",
        "type": "input",
        "description": "Adjustment terminal: provides 1.25 V internal reference voltage for external resistor-divider feedback network; typical adjustment pin current 50-100 µA for setting output voltage between 1.2-37 V."
      },
      {
        "number": "2",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated output voltage terminal adjustable from 1.2 to 37 V via external resistor divider; maximum output current 1.5-2.2 A when VI-VO ≤ 40 V and power dissipation ≤ 20 W; minimum load current 3.5-10 mA."
      },
      {
        "number": "3",
        "name": "IN",
        "type": "power_in",
        "description": "Unregulated input supply voltage terminal; input-to-output differential voltage VI-VO must not exceed 40 V absolute maximum rating; operating differential range 3-40 V for electrical characteristics."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 25,
        "cost_usd": 0.1756,
        "at": "2026-09-18T06:40:46"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886954125496320",
        "pages": 25,
        "sha256": "282eaff4ac2fa575",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "lm317t-dg.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          10.25,
          4.455,
          28.525
        ],
        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
        "sha256": "7cb065d935df5771f0ba6e48ddd180863a121af76483dad7f18e667a7b68204a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm317t-dg-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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          4.455,
          28.525
        ],
        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
        "sha256": "dec2f4761e0c46fd13f4491889b8b0e3ed8649ebd5f07de5d1743a7fce155a63",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "TO-220",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "lm317t-dg"
  ],
  "discovery_pitch": "LM317T-DG (STMicroelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm317t-dg.kicad_sym",
    "lm317t-dg.kicad_mod",
    "lm317t-dg.glb",
    "lm317t-dg.step",
    "lm317t-dg.lbr",
    "docs/hero.png",
    "docs/lm317t-dg-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-28T16:34:57.283Z"
}