MD85EF0SF4

{
  "slug": "md85ef0sf4",
  "version": "0.1.0",
  "type": "component",
  "description": "Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "md85ef0sf4",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "md85ef0sf4.kicad_sym",
    "md85ef0sf4.kicad_mod",
    "md85ef0sf4.glb",
    "md85ef0sf4.step",
    "md85ef0sf4.lbr",
    "docs/hero.png",
    "docs/md85ef0sf4-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "md85ef0sf4-hero.glb",
    "md85ef0sf4-hero.overlay.json",
    "md85ef0sf4-etched.glb"
  ],
  "component": {
    "mpn": "MD85EF0SF4",
    "manufacturer": "Shanghai Mingda Microelectronics",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "Power Supply Chip",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/438791bc443533b33de4a9d7d539d656.pdf",
    "parts": {
      "symbol": "md85ef0sf4.kicad_sym",
      "footprint": "md85ef0sf4.kicad_mod",
      "model_3d": "md85ef0sf4-hero.glb",
      "model_3d_plain": "md85ef0sf4-etched.glb",
      "model_3d_step": "md85ef0sf4-etched.step",
      "model_3d_step_plain": "md85ef0sf4.step",
      "lbr": "md85ef0sf4.lbr"
    },
    "distributor_links": {
      "lcsc": "C2978486"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T18:15:25Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 887 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage pin, up to 300mA, needs at least 1uF output capacitor and must not exceed VIN+0.3V."
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Enable pin: drive high (1.5V to 40V) to enable the device, drive low (0 to 0.6V) to put it into low current shutdown."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input pin, operating range 2.2V to 40V (absolute maximum 45V) with at least 1uF input capacitor."
      },
      {
        "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-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The ESOP8 pin diagram is flattened text, so pin positions were inferred from label order (VOUT/VIN t; The datasheet says a thermal pad is connected to GND and should go to the GND plane. It prints no pi"
        ],
        "pages_sent": 17,
        "cost_usd": 0.0901,
        "at": "2026-10-23T18:15:14"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/438791bc443533b33de4a9d7d539d656.pdf",
        "pages": 17,
        "sha256": "38727c99a8471351",
        "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": "md85ef0sf4.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "md85ef0sf4-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "a7cdb81da52c75827105ae9fd04e74e6da621de106c73178eea973745d6e7269",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}