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Ray Set visibility: public 396af36 17d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "lm317bd2tg",
  "title": "LM317BD2TG",
  "brief": "onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263-2. 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)",
    "lm317bd2tg",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM317BD2TG",
    "manufacturer": "onsemi",
    "package": "TO-263-2",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588900388439805952",
    "parts": {
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      "footprint": "lm317bd2tg.kicad_mod",
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      "model_3d_plain": "lm317bd2tg-etched.glb",
      "model_3d_step": "lm317bd2tg-etched.step",
      "model_3d_step_plain": "lm317bd2tg.step",
      "lbr": "lm317bd2tg.lbr"
    },
    "distributor_links": {
      "lcsc": "C153068",
      "digikey": "LM317BD2TGOS-ND",
      "mouser": "863-LM317BD2TG"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T07:09:53Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LM317BD2TGOS-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "863-LM317BD2TG",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Adjust",
        "type": "passive",
        "description": "The adjustment terminal carries IAdj, which the LM317 holds below 100 µA and constant, so Vout = Vref(1 + R2/R1) + IAdj·R2 with Vref typically 1.25 V."
      },
      {
        "number": "2",
        "name": "Vout",
        "type": "power_out",
        "description": "The regulated output terminal supplies more than 1.5 A over an output range of 1.2 V to 37 V, and the heatsink surface (terminal 4 in the case drawing) is connected to this pin."
      },
      {
        "number": "3",
        "name": "Vin",
        "type": "power_in",
        "description": "The input terminal accepts an input-output differential of −0.3 to 40 Vdc per the maximum ratings, and the device needs a minimum load current (ILmin, 10 mA max at VI−VO = 40 V) to maintain regulation."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Package mismatch: the package hint says TO-263-2, but the datasheet lists the LM317BD2TG as D2PAK-3 ; The D2PAK-3 case drawing shows a fourth terminal (the metal tab, 'terminal 4'), which is electricall; The datasheet does not assign an ERC pin type to the Adjust terminal. 'passive' was chosen because i"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0114,
        "at": "2026-10-18T07:07:54"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588900388439805952",
        "pages": 12,
        "sha256": "752b2a8373998f8d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "lm317bd2tg.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          15,
          10,
          4.42
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "804a3f76e4182a02567b2429bdc9a585b857158fb8543fccd29c8eb6780e1310",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm317bd2tg-etched.step",
        "role": "eda",
        "up": "Z",
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        "origin": "footprint origin = pad-pattern centre",
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        "zmin_mm": 0,
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        "footprint_binding": "identity",
        "sha256": "6550d2f425fb09d650c0db6341a8b091ac23e5376f4ffebaf96243cedf8fb1df",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "TO-263-2",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "752b2a8373998f8d446aa0bf9764ffe21faeb7f5c29fdca7295368cb870dae29",
      "rows": [
        {
          "name": "Input-Output Voltage Differential",
          "symbol": "VI-VO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range (ordering, LM317BD2TG)",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "LM317BD2TG ordering table: TJ = -40° to +125°C",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction-to-Ambient, Case 936 (D2PAK-3)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 70,
          "conditions": "Case 936 (D2PAK-3), TA = +25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction-to-Case, Case 936 (D2PAK-3)",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Case 936 (D2PAK-3)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "Regline",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.01,
          "max": 0.04,
          "conditions": "TA = +25°C, 3.0 V ≤ VI−VO ≤ 40 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "Regline",
          "kind": "electrical",
          "unit": "% V",
          "min": null,
          "typ": 0.02,
          "max": 0.07,
          "conditions": "3.0 V ≤ VI−VO ≤ 40 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "Regload",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 5,
          "max": 25,
          "conditions": "TA = +25°C, 10 mA ≤ IO ≤ Imax, VO ≤ 5.0 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "Regload",
          "kind": "electrical",
          "unit": "% VO",
          "min": null,
          "typ": 0.1,
          "max": 0.5,
          "conditions": "TA = +25°C, 10 mA ≤ IO ≤ Imax, VO ≥ 5.0 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "Regload",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 20,
          "max": 70,
          "conditions": "10 mA ≤ IO ≤ Imax, VO ≤ 5.0 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "Regload",
          "kind": "electrical",
          "unit": "% VO",
          "min": null,
          "typ": 0.3,
          "max": 1.5,
          "conditions": "10 mA ≤ IO ≤ Imax, VO ≥ 5.0 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Regulation",
          "symbol": "Regtherm",
          "kind": "electrical",
          "unit": "% VO/W",
          "min": null,
          "typ": 0.03,
          "max": 0.07,
          "conditions": "TA = +25°C, 20 ms Pulse",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Adjustment Pin Current",
          "symbol": "IAdj",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 50,
          "max": 100,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Adjustment Pin Current Change",
          "symbol": "IAdj",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.2,
          "max": 5,
          "conditions": "2.5 V ≤ VI−VO ≤ 40 V, 10 mA ≤ IL ≤ Imax, PD ≤ Pmax",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Reference Voltage",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "V",
          "min": 1.2,
          "typ": 1.25,
          "max": 1.3,
          "conditions": "3.0 V ≤ VI−VO ≤ 40 V, 10 mA ≤ IO ≤ Imax, PD ≤ Pmax",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Minimum Load Current to Maintain Regulation",
          "symbol": "ILmin",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3.5,
          "max": 10,
          "conditions": "VI−VO = 40 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Long-Term Stability",
          "symbol": "S",
          "kind": "electrical",
          "unit": "%/1.0 kHrs.",
          "min": null,
          "typ": 0.3,
          "max": 1,
          "conditions": "TJ = Thigh, TA = +25°C for Endpoint Measurements",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "lm317bd2tg"
  ],
  "discovery_pitch": "LM317BD2TG (onsemi) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "lm317bd2tg-etched.glb"
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  "visibility": {
    "public": true
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}