main
Ray Set visibility: public 345e89b 14d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "md53r28",
  "title": "MD53R28",
  "brief": "Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. 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)",
    "md53r28",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MD53R28",
    "manufacturer": "Shanghai Mingda Microelectronics",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590225672540229632",
    "parts": {
      "symbol": "md53r28.kicad_sym",
      "footprint": "md53r28.kicad_mod",
      "model_3d": "md53r28-hero.glb",
      "model_3d_plain": "md53r28-etched.glb",
      "model_3d_step": "md53r28-etched.step",
      "model_3d_step_plain": "md53r28.step",
      "lbr": "md53r28.lbr"
    },
    "distributor_links": {
      "lcsc": "C2978398"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T21:06:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output of the LDO, 2.8 V ±2% for MD53R28, with 500 mA typical output current and 50 mA typical short-circuit current; VOUT must not exceed VIN+0.3 V, and a 2.2 µF or larger tantalum (or 10 µF or larger aluminum electrolytic) output capacitor is required."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (VSS) reference pin for the regulator; the datasheet specifies the output short-circuit and ground current with respect to this pin."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "ON/OFF control: logic high (1.0 V to 10 V) enables the regulator and logic low (0 V to 0.35 V) shuts it down; the pin has no internal pull-up or pull-down and must not be left floating, so tie it to VIN if unused."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; the datasheet lists this pin as NC on the SOT-23-5 package."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Regulator input supply; the absolute maximum input voltage is 12 V, the output stays regulated for inputs up to 10 V, and the input should be decoupled with at least 1.0 µF."
      }
    ],
    "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 pin-to-number mapping for SOT-23-5 is not cleanly recoverable from the garbled text extraction o; The datasheet's product table marks only some variants (asterisked parts) as available in both SOT23; The datasheet gives no spec field requested here beyond the pinout, so no specs were extracted. Pack"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0413,
        "at": "2026-10-20T21:01:00"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590225672540229632",
        "pages": 13,
        "sha256": "264969efedda2a5d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "md53r28.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "md53r28-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9024dc5b3f3500bd71430b0944308f000c41c8eb82cfc185ca06cd34ef3b5dd7",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shanghai Mingda Microelectronics",
      "Package": "SOT-23-5",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "264969efedda2a5d509ab7eb44be23d37367da0af89848bf4c450d28ef40662c",
      "rows": [
        {
          "name": "Output voltage (±2% tolerance; 2.8V nominal)",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "×VOUT",
          "min": 0.98,
          "typ": null,
          "max": 1.02,
          "conditions": "VIN=VOUT+1V, IOUT=40mA; printed as VOUT×0.98 to VOUT×1.02 (nominal 2.8V for MD53R28)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input stability (line regulation)",
          "symbol": "ΔVOUT1/ΔVIN*VOUT",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.05,
          "max": 0.2,
          "conditions": "VOUT+1V≤VIN≤10V, IOUT=1mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Load stability (load regulation)",
          "symbol": "ΔVOUT2",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 15,
          "max": 30,
          "conditions": "VIN=VOUT+1V, 1mA≤IOUT≤100mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage temperature coefficient",
          "symbol": "ΔVOUT/ΔTa*VOUT",
          "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": "Consumption current (GND/supply current, no load)",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 25,
          "max": 40,
          "conditions": "VIN=VEN=VOUT+1V, no load",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Shutdown current",
          "symbol": "ISHUT",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.1,
          "max": 1,
          "conditions": "VIN=VOUT+1V, VEN=0, no load",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "EN pull-up current",
          "symbol": "IENH",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.1,
          "max": 1,
          "conditions": "VIN=VEN=VOUT+1V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "EN input high voltage",
          "symbol": "VENH",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "EN input low voltage",
          "symbol": "VENL",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.35,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output short-circuit current",
          "symbol": "ISHORT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 50,
          "max": 70,
          "conditions": "VOUT=0V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (absolute maximum)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 12,
          "conditions": "Ta=25℃ unless noted",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (absolute maximum)",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Printed Vss-0.3 to VIN+0.3; min shown as Vss-0.3 (offset -0.3), max VIN+0.3 is not numeric",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Allowable power dissipation SOT23-5",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "SOT23-5 package, Ta=25℃ unless noted",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage ambient temperature range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "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"
        },
        {
          "name": "Thermal resistance junction-to-board SOT23-5",
          "symbol": "RθJB",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Mounted on JEDEC standard 4-layer (2s2p) PCB test board, footnote (1)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input capacitor CIN",
          "symbol": "CIN",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "Minimum input capacitance",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Output capacitor CL (tantalum)",
          "symbol": "CL",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 2.2,
          "typ": null,
          "max": null,
          "conditions": "Tantalum capacitor; 10.0µF minimum if aluminium electrolytic",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Output capacitor ESR",
          "symbol": "ESR",
          "kind": "recommended_operating",
          "unit": "Ω",
          "min": 0.5,
          "typ": null,
          "max": 5,
          "conditions": "Appropriate ESR range for stable operation",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 500,
          "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": 65,
          "max": null,
          "conditions": "f=100Hz, IOUT=10mA",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "md53r28"
  ],
  "discovery_pitch": "MD53R28 (Shanghai Mingda Microelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "md53r28.step",
    "md53r28.lbr",
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    "md53r28-hero.overlay.json",
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  "visibility": {
    "public": true
  }
}