LM317ST

{
  "slug": "lm317st",
  "version": "0.1.0",
  "type": "component",
  "description": "PJSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lm317st",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm317st.kicad_sym",
    "lm317st.kicad_mod",
    "lm317st.glb",
    "lm317st.step",
    "lm317st.lbr",
    "docs/hero.png",
    "docs/lm317st-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm317st-hero.glb",
    "lm317st-hero.overlay.json"
  ],
  "component": {
    "mpn": "LM317ST",
    "manufacturer": "PJSEMI",
    "package": "SOT-223",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603387381777252352",
    "parts": {
      "symbol": "lm317st.kicad_sym",
      "footprint": "lm317st.kicad_mod",
      "model_3d": "lm317st-hero.glb",
      "model_3d_plain": "lm317st.glb",
      "model_3d_step": "lm317st-etched.step",
      "model_3d_step_plain": "lm317st.step",
      "lbr": "lm317st.lbr"
    },
    "distributor_links": {
      "lcsc": "C23376665"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T22:30:51Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 546 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "passive",
        "description": "Output feedback voltage pin (the adjustment/sense terminal) that sets the output through the external resistor divider, with the datasheet giving Iadj under 100 µA and a typical 1.25 V reference between output and adjust."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage pin, rated for up to 1.5 A output current (internally limited), and the datasheet notes that a minimum load current of 10 mA is needed to maintain regulation."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input pin; the input-output voltage differential must stay between 3 V and 37 V in recommended operation, with absolute maximum of -0.3 V to +40 V."
      }
    ],
    "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: The SOT-223 pin list on the datasheet only gives pins 1 (FB), 2 (VOUT) and 3 (VIN). The SOT-223 tab/; The pin name is FB ('Output Feedback Voltage') as printed in the datasheet, though the regulator's a; Page 3 text is garbled: the 8-pin LM317L pinout (8.NC, 7.VOUT, 6.VOUT, 5.NC) appears on the same pag"
        ],
        "pages_sent": 11,
        "cost_usd": 0.037,
        "at": "2026-10-09T22:28:47"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603387381777252352",
        "pages": 11,
        "sha256": "15d37c7c3105c91b",
        "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": "lm317st.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          6.5,
          1.7
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm317st-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          6.5,
          1.7
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c87595c700fadbaf9093fe5f49043e5daad08029f51b16a8f419616c2978017b",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}