WD1038DH-8

{
  "slug": "wd1038dh-8",
  "version": "0.1.0",
  "type": "component",
  "description": "WILLSEMI Will Semicon DC-DC Converters, DFN-8-EP(2x2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "wd1038dh-8",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "wd1038dh-8.kicad_sym",
    "wd1038dh-8.kicad_mod",
    "wd1038dh-8.glb",
    "wd1038dh-8.step",
    "wd1038dh-8.lbr",
    "docs/hero.png",
    "docs/wd1038dh-8-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "wd1038dh-8-hero.glb",
    "wd1038dh-8-hero.overlay.json",
    "wd1038dh-8-etched.glb"
  ],
  "component": {
    "mpn": "WD1038DH-8",
    "manufacturer": "WILLSEMI Will Semicon",
    "package": "DFN-8-EP(2x2)",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590210043288322048",
    "parts": {
      "symbol": "wd1038dh-8.kicad_sym",
      "footprint": "wd1038dh-8.kicad_mod",
      "model_3d": "wd1038dh-8-hero.glb",
      "model_3d_plain": "wd1038dh-8-etched.glb",
      "model_3d_step": "wd1038dh-8-etched.step",
      "model_3d_step_plain": "wd1038dh-8.step",
      "lbr": "wd1038dh-8.lbr"
    },
    "distributor_links": {
      "lcsc": "C2941886"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T20:31:40Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Feedback pin connected to the feedback resistor divider for the adjustable version, or to VOUT for the fixed-output version; the datasheet reference voltage is 0.6 V (0.588 V to 0.612 V)."
      },
      {
        "number": "2",
        "name": "PG",
        "type": "output",
        "description": "Power-good open-drain output that needs an external pull-up; it is pulled high when FB is within 90% of nominal and is LOW otherwise, sinking up to 1 mA with a pull-up to a rail below 5.5 V."
      },
      {
        "number": "3",
        "name": "IN",
        "type": "power_in",
        "description": "Input supply pin, operating from 2.7 V to 5.5 V, that must be decoupled to GND with at least 10 uF of ceramic capacitance."
      },
      {
        "number": "4",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the power stage, which must also be connected to the exposed pad for maximum power dissipation."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "6",
        "name": "LX",
        "type": "output",
        "description": "Inductor (switch node) pin that connects to the output inductor; its PCB copper area should be kept minimal to avoid noise problems."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Enable control that turns the regulator on when pulled high (VIH 1.4 V min, VIL 0.4 V max) and must not be left floating."
      },
      {
        "number": "8",
        "name": "SGND",
        "type": "power_in",
        "description": "Signal ground for the control circuitry."
      },
      {
        "number": "9",
        "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 DFN2x2-8L exposed (thermal) pad is shown in the package drawing and pin table but is not given a; The figure text extraction lists pin names in an order that does not match the numbering. The pin-de; Pin types for LX and PG are inferred from function: LX is the switching node and PG is an open-drain",
          "exposed pad 9 added from the footprint"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0467,
        "at": "2026-10-18T20:29:29"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590210043288322048",
        "pages": 12,
        "sha256": "598a938265306281",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "wd1038dh-8.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.0,
          1.98,
          0.92
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "914cd301aa2efff54a7c18fe40fe21c25b277d6109b6cb10afb266387128ddd0",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "wd1038dh-8-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.0,
          1.98,
          0.92
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "831a2520b62d0899ca760c9552a289d0318726e56d295afe36bac198545af108",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}