main
Ray Set visibility: public 2ee7804 16d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "md7733",
  "title": "MD7733",
  "brief": "Shanghai Mingda Microelectronics DC-DC Converters, TO-92-3. 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)",
    "md7733",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MD7733",
    "manufacturer": "Shanghai Mingda Microelectronics",
    "package": "TO-92-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590225442310418432",
    "parts": {
      "symbol": "md7733.kicad_sym",
      "footprint": "md7733.kicad_mod",
      "model_3d": "md7733-hero.glb",
      "model_3d_plain": "md7733-etched.glb",
      "model_3d_step": "md7733-etched.step",
      "model_3d_step_plain": "md7733.step",
      "lbr": "md7733.lbr"
    },
    "distributor_links": {
      "lcsc": "C2978579"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T10:38:25Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Vss",
        "type": "power_in",
        "description": "Ground pin (Vss/GND); absolute maximum Vout, CE and Lx voltages are referenced to Vss."
      },
      {
        "number": "2",
        "name": "Vout",
        "type": "power_out",
        "description": "Output voltage monitoring pin that also supplies the internal circuit; absolute maximum is Vss-0.3 to Vss+12 V."
      },
      {
        "number": "3",
        "name": "Lx",
        "type": "output",
        "description": "Switching pin connected to the inductor; absolute maximum is Vss-0.3 to Vss+12 V with ILX up to 1000 mA."
      }
    ],
    "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 ordering table on page 2 lists only SOT-89-3, SOT-89-5, SOT-23-3 and SOT-23-5 for MD7733. TO-92 ; The datasheet gives no electrical pin type for Vout or Lx. Vout is classed power_out and Lx output f",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 12,
        "cost_usd": 0.1298,
        "at": "2026-10-19T10:38:10"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590225442310418432",
        "pages": 12,
        "sha256": "59f5984eab2f611d",
        "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": "md7733.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          4.83,
          3.745,
          9.8
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "f0b61c32ecbf0067157adc5a3d4966ceadf5d6dafe93c51af35f76c41c71a54a",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "md7733-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": [
          4.83,
          3.745,
          9.8
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "75cad695028fd2ffb55ae39784d997451e88331dce5a4781e19cbb9e3d05da74",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shanghai Mingda Microelectronics",
      "Package": "TO-92-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "59f5984eab2f611d7ad33b86540b06a4c4c09ab776723d4cc9c7ebd75028c6ed",
      "rows": [
        {
          "name": "Output voltage accuracy",
          "symbol": "△Vout",
          "kind": "tolerance",
          "unit": "%",
          "min": -2.5,
          "typ": null,
          "max": 2.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "Vin",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Start voltage",
          "symbol": "Vstart",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.75,
          "max": 0.9,
          "conditions": "Iout=1mA, Vin: 0→2V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Hold voltage",
          "symbol": "Vhold",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.7,
          "conditions": "Iout=1mA, Vin: 2→0V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input current",
          "symbol": "Iin",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 10,
          "max": 20,
          "conditions": "Iout=0mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Quiescent power consumption",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 4,
          "max": 7,
          "conditions": "VS = VOUT+0.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Shutdown current",
          "symbol": "ISHDN",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "CE=GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "CE high-level voltage",
          "symbol": "VCEH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "CE low-level voltage",
          "symbol": "VCEL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Switch leakage current",
          "symbol": "ILEAK",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "VS = VOUT+0.5V, VX=6V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Duty cycle",
          "symbol": "DOSC",
          "kind": "electrical",
          "unit": "%",
          "min": 65,
          "typ": 75,
          "max": 85,
          "conditions": "VS = VOUT*0.95",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "Tmin-max",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -20,
          "typ": null,
          "max": 80,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstorage",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Lx current",
          "symbol": "ILX",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Soldering temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10 S",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillation frequency",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "kHz",
          "min": null,
          "typ": 110,
          "max": null,
          "conditions": "VS = VOUT*0.95",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Efficiency",
          "symbol": "η",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 85,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Nominal output voltage (MD7733 = 3.3V version)",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3.3,
          "max": null,
          "conditions": "MD7733 variant",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "md7733"
  ],
  "discovery_pitch": "MD7733 (Shanghai Mingda Microelectronics) 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",
    "md7733.kicad_sym",
    "md7733.kicad_mod",
    "md7733.glb",
    "md7733.step",
    "md7733.lbr",
    "docs/hero.png",
    "docs/md7733-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "md7733-hero.glb",
    "md7733-hero.overlay.json",
    "md7733-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}