main
Ray Set visibility: public d8cc3c2 12d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "md7550h",
  "title": "MD7550H",
  "brief": "Shanghai Mingda Microelectronics Linear Voltage Regulators (LDO), SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "component": {
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    "manufacturer": "Shanghai Mingda Microelectronics",
    "package": "SOT-89-3",
    "pin_count": 3,
    "category": "Power Management ICs",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5ac1296419ce456189fb6807af1ef0ef.pdf",
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    "distributor_links": {
      "lcsc": "C126977"
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    "distributor_check": {
      "checked_at": "2026-10-27T00:07:51Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
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      "mouser": {
        "pn": null,
        "status": "no match"
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    "pins": [
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        "name": "GND",
        "type": "power_in",
        "description": "Ground terminal of the regulator, which the datasheet specifies as the common reference for the output and the short-circuit limit (VOUT to GND)."
      },
      {
        "number": "2",
        "name": "VDD",
        "type": "power_in",
        "description": "Power input terminal, with the input voltage rated at a maximum of 30V and the output held in regulation across the input range."
      },
      {
        "number": "3",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output terminal, which must not be driven more than 0.3V above VIN per the datasheet, and which requires an output capacitor of at least 2.2uF (tantalum recommended) to GND."
      }
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        "consensus": "skipped (clean text read)",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
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        "cost_usd": 0.0006,
        "at": "2026-10-27T00:07:01"
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        "pages": 11,
        "sha256": "6ece13130c125249",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-27",
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  "metadata": {
    "specs": {
      "Manufacturer": "Shanghai Mingda Microelectronics",
      "Package": "SOT-89-3",
      "Category": "Power Management ICs",
      "Pins": "3"
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      "rows": [
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          "name": "Output voltage",
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          "min": 4.85,
          "typ": 5,
          "max": 5.15,
          "conditions": "VIN= 7V, IOUT=10mA",
          "source_page": 3,
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        {
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          "unit": "mA",
          "min": 100,
          "typ": 120,
          "max": null,
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        {
          "name": "Input-output voltage difference",
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          "conditions": "IOUT=10mA",
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        {
          "name": "Input stability",
          "symbol": "ΔVOUT/(ΔVIN·VOUT)",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.05,
          "max": 0.2,
          "conditions": "6V≤VIN≤30V, IOUT=1mA",
          "source_page": 3,
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        {
          "name": "Load regulation",
          "symbol": "ΔVOUT2",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 60,
          "max": 100,
          "conditions": "VIN=7V, 1.0mA≤IOUT≤100mA",
          "source_page": 3,
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        },
        {
          "name": "Output voltage temperature coefficient",
          "symbol": "ΔVOUT/(ΔTa·VOUT)",
          "kind": "temperature_coefficient",
          "unit": "ppm/℃",
          "min": null,
          "typ": 50,
          "max": 100,
          "conditions": "VIN=7V, IOUT=10mA, -40℃≤Ta≤85℃",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 1.2,
          "max": 5,
          "conditions": "VIN=30V, no load",
          "source_page": 3,
          "source": "datasheet"
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        {
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          "symbol": "Vmax",
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          "source": "datasheet"
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          "name": "Output short-circuit current",
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          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 180,
          "max": null,
          "conditions": "Vout=0V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Overvoltage protection",
          "symbol": "OVP",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 37,
          "max": null,
          "conditions": "IOUT=1mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 2,
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        },
        {
          "name": "Allowable power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "SOT_89 package",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature range",
          "symbol": "Topr",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Storage ambient temperature range",
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          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input capacitor",
          "symbol": "CIN",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "Input capacitor CIN",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output capacitor",
          "symbol": "CL",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 2.2,
          "typ": null,
          "max": null,
          "conditions": "Tantalum capacitor",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output capacitor",
          "symbol": "CL",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 10,
          "typ": null,
          "max": null,
          "conditions": "Aluminum electrolytic capacitor",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "MD7550H (Shanghai Mingda Microelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}