main
Ray Set visibility: public 1a29373 16d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "lp3997-18qvf",
  "title": "LP3997-18QVF",
  "brief": "LOWPOWER(微源半导体) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, DFN-4-EP(1x1). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "lp3997-18qvf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LP3997-18QVF",
    "manufacturer": "LOWPOWER(微源半导体)",
    "package": "DFN-4-EP(1x1)",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603016935823331328",
    "parts": {
      "symbol": "lp3997-18qvf.kicad_sym",
      "footprint": "lp3997-18qvf.kicad_mod",
      "model_3d": "lp3997-18qvf-hero.glb",
      "model_3d_plain": "lp3997-18qvf-etched.glb",
      "model_3d_step": "lp3997-18qvf-etched.step",
      "model_3d_step_plain": "lp3997-18qvf.step",
      "lbr": "lp3997-18qvf.lbr"
    },
    "distributor_links": {
      "lcsc": "C34032117"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T06:01:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VOUT",
        "type": "power_out",
        "description": "Output pin; bypass with a 1μF or greater ceramic capacitor from this pin to ground, placed as close to the pin as possible."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Active-high enable; driving EN over 1V turns the regulator on and driving EN below 0.4V puts it into shutdown mode."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input; must be closely decoupled to GND with a 1μF or greater ceramic capacitor placed as close to the pin as possible."
      },
      {
        "number": "5",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 ordering code LP3997-18QVF maps to package type QV (DFN-4) per the Order Information on page 1, ; The package hint says DFN-4-EP, but the datasheet gives no exposed pad for the DFN-4 package. Only p; The datasheet pin table lists an NC (no connection) pin 4 only for the SOT23-5 package, so it was ex",
          "exposed pad 5 added from the footprint"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0434,
        "at": "2026-10-17T05:59:57"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603016935823331328",
        "pages": 16,
        "sha256": "44cf7dbeb160d1d3",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lp3997-18qvf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          1,
          0.98,
          0.57
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "86e5f8eefe287160705813dbaa7f6606754ab347715fbffa4ee680635c44541f",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lp3997-18qvf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          1,
          0.98,
          0.57
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "11a01ed82c6591d37b8930dbff5d0c8881d44b32e8e578a1edf9227463d04fb3",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "LOWPOWER(微源半导体)",
      "Package": "DFN-4-EP(1x1)",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
    },
    "appearance": {
      "contacts": {
        "quote": "practically possible to the respective LDO pins. Place ground return connections to the input and output capacitors, and to the LDO ground pin as close to each other as possible with a wide and compon",
        "page": 10,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "44cf7dbeb160d1d3c18bd25ec2d239c182e71fba88bdb7bbe5a9921a54863ddd"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "44cf7dbeb160d1d3c18bd25ec2d239c182e71fba88bdb7bbe5a9921a54863ddd",
      "rows": [
        {
          "name": "Input Voltage Operation Range",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": 1.6,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VIN Pin to GND",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VOUT, EN Pin to GND",
          "symbol": "VOUT, EN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Maximum is VIN (printed as -0.3~VIN)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Junction Temperature (TJ)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Ambient Temperature Range (TA)",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Soldering Temperature (at leads)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "at leads, 10 sec",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ESD Human Body Model (HBM)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "HBM",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ESD Charged Device Model (CDM)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "CDM",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.6,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range (TJ)",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "Printed as '40℃ to 150℃' in the datasheet text; minus sign not visible in extraction, see review_required",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Ambient Temperature Range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "EN Logic High Voltage",
          "symbol": "VENH",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN Logic Low Voltage",
          "symbol": "VENL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Load Current Limit",
          "symbol": "ILIMIT",
          "kind": "electrical",
          "unit": "mA",
          "min": 400,
          "typ": null,
          "max": 500,
          "conditions": "VOUT=0.9*VOUT(Nom)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Line Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.02,
          "max": null,
          "conditions": "VIN=VOUT+0.5V~6V, ILOAD=1mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Load Regulation",
          "symbol": "VLOAD",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "ILOAD from 1mA to 300mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Short Current Limit",
          "symbol": "ISHORT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "VOUT short to GND",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown Threshold",
          "symbol": "TSD",
          "kind": "electrical",
          "unit": "℃",
          "min": null,
          "typ": 155,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Auto-Discharge Resistance",
          "symbol": "RDIS",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 160,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lp3997-18qvf"
  ],
  "discovery_pitch": "LP3997-18QVF (LOWPOWER(微源半导体)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lp3997-18qvf.kicad_sym",
    "lp3997-18qvf.kicad_mod",
    "lp3997-18qvf.glb",
    "lp3997-18qvf.step",
    "lp3997-18qvf.lbr",
    "docs/hero.png",
    "docs/lp3997-18qvf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lp3997-18qvf-hero.glb",
    "lp3997-18qvf-hero.overlay.json",
    "lp3997-18qvf-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}