LM7909CT

{
  "slug": "lm7909ct",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lm7909ct",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm7909ct.kicad_sym",
    "lm7909ct.kicad_mod",
    "lm7909ct.glb",
    "lm7909ct.step",
    "lm7909ct.lbr",
    "docs/hero.png",
    "docs/lm7909ct-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm7909ct-hero.glb",
    "lm7909ct-hero.overlay.json",
    "lm7909ct-etched.glb"
  ],
  "component": {
    "mpn": "LM7909CT",
    "manufacturer": "HGSEMI",
    "package": "TO-220-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8f33a9a327ea35679a4ee197855d95ad.pdf",
    "parts": {
      "symbol": "lm7909ct.kicad_sym",
      "footprint": "lm7909ct.kicad_mod",
      "model_3d": "lm7909ct-hero.glb",
      "model_3d_plain": "lm7909ct-etched.glb",
      "model_3d_step": "lm7909ct-etched.step",
      "model_3d_step_plain": "lm7909ct.step",
      "lbr": "lm7909ct.lbr"
    },
    "distributor_links": {
      "lcsc": "C22446593",
      "digikey": "LM7909CT-ND",
      "mouser": "512-LM7909CT"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T15:54:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LM7909CT-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "512-LM7909CT",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the negative regulator, shown as GND on the TO-220-3 pin drawing."
      },
      {
        "number": "2",
        "name": "INPUT",
        "type": "power_in",
        "description": "Unregulated negative input voltage, maximum -35 V at TJ=25°C, with -10.5 V to -25 V specified for the LM7909C output voltage limits."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated negative output of -8.60 V to -9.40 V at 5.0 mA to 1.0 A load, with internal short-circuit current limiting and output current in excess of 1.5 A."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The TO-220-3 drawing on page 2 lists the leads as Output, Input, GND from top to bottom, and the pag; The drawings label the metal tab INPUT in the TO-263 views and as an arrow at the tab in the TO-220 ",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 10,
        "cost_usd": 0.1885,
        "at": "2026-11-05T15:54:41"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/8f33a9a327ea35679a4ee197855d95ad.pdf",
        "pages": 10,
        "sha256": "c70f3a4452f8948a",
        "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": "lm7909ct.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": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm7909ct-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": [
          10.25,
          4.455,
          28.525
        ],
        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
        "sha256": "da64473cf68f86aa796bfbe91508f2aea060cd5a2cc3fc5d5fefe4e93ba2aaf1",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}