main
Ray cj78m09: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) 9aa757a 25d ago
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  "title": "CJ78M09",
  "brief": "Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
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      "lcsc": "C9071"
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      "checked_at": "2026-10-09T19:30:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
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    },
    "pins": [
      {
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        "name": "IN",
        "type": "power_in",
        "description": "Unregulated input to the regulator, with an absolute maximum input voltage of 35 V; a 0.33 µF input capacitor Ci is recommended, placed as close to the regulator as possible."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground reference for the regulator, to which the input and output capacitors should be returned."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated 9 V output (8.55 V to 9.45 V over 11.5 V to 24 V input and 5 mA to 350 mA load), with a 0.1 µF output capacitor Co recommended and a maximum output current of 0.5 A."
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet labels the package TO-252-2L but lists three numbered leads (1.IN, 2.GND, 3.OUT). The ; The datasheet does not state whether the metal tab is electrically connected to any pin (for example; The datasheet does not give a separate pin-level electrical limit for GND or OUT beyond the stated o"
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        "at": "2026-10-09T19:27:59"
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        "pages": 5,
        "sha256": "78ed41af6e78898c",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "3eb4c99603a4fe837c2fe9308bc174769ded87a785a0df48d2dc441432ee8b4c",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "sha256": "cbdc23cce5803f17837ab57a71d5d693b3d48c1dec705b6740366a0e8bbc4e31",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  "metadata": {
    "specs": {
      "Manufacturer": "Changjing",
      "Package": "TO-252-2(DPAK)",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
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    "characteristics": {
      "version": 1,
      "source": "datasheet",
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          "name": "Output Voltage",
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          "max": 9.27,
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          "conditions": "11.5≤Vi≤24V, Io=5mA-350mA",
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        },
        {
          "name": "Load Regulation",
          "symbol": "ΔVo",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 20,
          "max": 180,
          "conditions": "Io=5mA-500mA",
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        {
          "name": "Load Regulation",
          "symbol": "ΔVo",
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          "unit": "mV",
          "min": null,
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          "max": 90,
          "conditions": "Io=5mA-200mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "ΔVo",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 6,
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          "conditions": "11.5V≤Vi≤26V, Io=200mA",
          "source_page": 1,
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        },
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          "name": "Line Regulation",
          "symbol": "ΔVo",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
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        },
        {
          "name": "Quiescent Current",
          "symbol": "Iq",
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          "unit": "mA",
          "min": null,
          "typ": 4.6,
          "max": 6,
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        {
          "name": "Quiescent Current Change",
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          "kind": "electrical",
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          "min": null,
          "typ": 0.8,
          "max": null,
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        {
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          "unit": "mA",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "5mA≤IO≤350mA",
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          "source": "datasheet"
        },
        {
          "name": "Ripple Rejection",
          "symbol": "RR",
          "kind": "electrical",
          "unit": "dB",
          "min": 56,
          "typ": 80,
          "max": null,
          "conditions": "13≤Vi≤23V, f=120Hz, Io=300mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Output Noise Voltage",
          "symbol": "VN",
          "kind": "electrical",
          "unit": "μV",
          "min": null,
          "typ": 60,
          "max": null,
          "conditions": "10Hz≤f≤100KHz",
          "source_page": 1,
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        },
        {
          "name": "Dropout Voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
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          "conditions": "Io=350mA",
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        },
        {
          "name": "Short Circuit Current",
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          "kind": "electrical",
          "unit": "mA",
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          "conditions": "Vi=16V",
          "source_page": 1,
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        },
        {
          "name": "Peak Current",
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          "typ": null,
          "max": 35,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
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        {
          "name": "Thermal Resistance from Junction to Ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": null,
          "max": 80,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range",
          "symbol": "TOPR",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Continuous Total Dissipation (features)",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1.25,
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          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum Output Current (features)",
          "symbol": "IOM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "",
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    }
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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