LM317D2T-TR

{
  "slug": "lm317d2t-tr",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263-2. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lm317d2t-tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm317d2t-tr.kicad_sym",
    "lm317d2t-tr.kicad_mod",
    "lm317d2t-tr.glb",
    "lm317d2t-tr.step",
    "lm317d2t-tr.lbr",
    "docs/hero.png",
    "docs/lm317d2t-tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "LM317D2T-TR",
    "manufacturer": "STMicroelectronics",
    "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/8586202517663727616",
    "parts": {
      "symbol": "lm317d2t-tr.kicad_sym",
      "footprint": "lm317d2t-tr.kicad_mod",
      "model_3d": "lm317d2t-tr-etched.glb",
      "model_3d_plain": "lm317d2t-tr.glb",
      "model_3d_step": "lm317d2t-tr-etched.step",
      "model_3d_step_plain": "lm317d2t-tr.step",
      "lbr": "lm317d2t-tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C91673"
    },
    "pins": [
      {
        "number": "1",
        "name": "ADJUST",
        "type": "bidirectional",
        "description": "Adjustment terminal that sets the constant 1.25 V reference across external resistor R1; draws a typical 50 µA (max 100 µA) adjustment-pin current with only 0.2-5 µA change over line/load, used with an external resistor divider to program VO = VREF(1+R2/R1) + IADJ·R2."
      },
      {
        "number": "2",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated output terminal, internally referenced 1.25 V (1.2-1.3 V typ) above the ADJUST pin; delivers output current in excess of 1.5 A (up to 2.2 A max for VI-VO ≤15 V) and is electrically the same net as the package tab used for heat-sinking."
      },
      {
        "number": "3",
        "name": "INPUT",
        "type": "power_in",
        "description": "Unregulated input supply terminal; the input-to-output differential voltage (VI-VO) must not exceed the 40 V absolute maximum rating, with electrical characteristics specified at VI-VO = 5 V and a 2.5-40 V operating differential range."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-sonnet-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-4-8",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Figure 1 (page 3) shows the D²PAK pin diagram only with pin NAMES (INPUT, OUTPUT, ADJUST) and the ta; Electrical characteristics tables (pages 7-8) describe VREF as measured 'between pin 3 and pin 1' fo",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 25,
        "cost_usd": 0.548,
        "at": "2026-09-23T00:59:41"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586202517663727616",
        "pages": 25,
        "sha256": "6c20f995e97f5cb4",
        "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": [
      {
        "file": "lm317d2t-tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          15.0,
          10.0,
          4.42
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "804a3f76e4182a02567b2429bdc9a585b857158fb8543fccd29c8eb6780e1310",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm317d2t-tr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          15.0,
          10.0,
          4.42
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7499d2828dd6830f0afd97351220876062bad37a41b81af5488500dfac86b6a8",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}