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Ray Set visibility: public d74aed8 3d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "md5344-1",
  "title": "MD5344-1",
  "brief": "Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), SOT-23-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power supply chip",
    "md5344-1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
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    "manufacturer": "Shanghai Mingda Microelectronics",
    "package": "SOT-23-3L",
    "pin_count": 3,
    "category": "Power Supply Chip",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/fc2882c00b625906c10594359b64a6ae.pdf",
    "parts": {
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      "footprint": "md5344-1.kicad_mod",
      "model_3d": "md5344-1-hero.glb",
      "model_3d_plain": "md5344-1-etched.glb",
      "model_3d_step": "md5344-1-etched.step",
      "model_3d_step_plain": "md5344-1.step",
      "lbr": "md5344-1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2978546"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T09:07:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin of the MD5344-1 4.4V LDO regulator."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Regulator input; operating input voltage up to 10V (absolute maximum 12V)."
      },
      {
        "number": "3",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated 4.4V (±2%) output, up to 500mA with about 1A current limit; needs an output capacitor of 2.2µF or more close to VOUT and VSS."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "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 pin-name-to-number mapping for SOT-23-3L is not explicit in the extracted text. The package draw"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0705,
        "at": "2026-10-23T09:06:40"
      },
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        "pages": 12,
        "sha256": "248fdd6b5737ce18",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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    "models_3d": [
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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        "sha256": "b90ccc3152b890b02d8ed97bf9e47c22578bbfc88db388b42267e891b2fa7ced",
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        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  "metadata": {
    "specs": {
      "Manufacturer": "Shanghai Mingda Microelectronics",
      "Package": "SOT-23-3L",
      "Category": "Power Supply Chip",
      "Pins": "3"
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    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "248fdd6b5737ce18d416b6d467e8dfa77390a594e5a5e2c653b67c954272dcd2",
      "rows": [
        {
          "name": "Input voltage (absolute maximum)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 12,
          "conditions": "Ta=25℃",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation SOT-23",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
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          "max": 250,
          "conditions": "SOT-23, Ta=25℃",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance SOT-23",
          "symbol": "RθJB",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "SOT-23, JEDEC 4-layer (2s2p) PCB",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature",
          "symbol": "TOPR",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output voltage tolerance (nominal 4.4V)",
          "symbol": "VOUT(S)",
          "kind": "tolerance",
          "unit": "%",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "VIN=VOUT+1V, IOUT=50mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage nominal",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 4.4,
          "max": null,
          "conditions": "MD5344-1 catalog value",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": 500,
          "typ": null,
          "max": null,
          "conditions": "VIN=VOUT+1V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "ΔVOUT1/ΔVIN*VOUT",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.05,
          "max": 0.2,
          "conditions": "VOUT+1V≤VIN≤10V, IOUT=10mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "ΔVOUT2",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 20,
          "max": 40,
          "conditions": "VIN=VOUT+1V, 1mA≤IOUT≤100mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage temperature coefficient",
          "symbol": "ΔVOUT/ΔTa*VOUT(S)",
          "kind": "temperature_coefficient",
          "unit": "ppm/℃",
          "min": -100,
          "typ": 50,
          "max": 100,
          "conditions": "VIN=VOUT+1V, IOUT=1mA, -40℃≤Ta≤125℃",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply current",
          "symbol": "ISS1",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 1.2,
          "max": 2.5,
          "conditions": "VIN=10V, no load",
          "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": "Current limit",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VIN=VOUT+1V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power supply rejection ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 44,
          "max": null,
          "conditions": "f=100Hz, IOUT=10mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power supply rejection ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 23,
          "max": null,
          "conditions": "f=1kHz, IOUT=10mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input capacitor",
          "symbol": "CIN",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "1.0 µF or more",
          "source_page": 8,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "md5344-1"
  ],
  "discovery_pitch": "MD5344-1 (Shanghai Mingda Microelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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  "visibility": {
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  }
}