main
Ray Publish 0.2.1 a2fc75d
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  "title": "L78M05CDT-TR",
  "brief": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
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    "manufacturer": "STMicroelectronics",
    "package": "TO-252-2(DPAK)",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
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    "distributor_links": {
      "digikey": "497-1203-2-ND",
      "lcsc": "C55509"
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    "pins": [
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        "number": "1",
        "name": "INPUT",
        "type": "power_in",
        "description": "Unregulated positive DC input. Absolute maximum 35 V (for 5-18 V output versions). Bypass to GND with a 0.33 uF ceramic close to the pin for stability."
      },
      {
        "number": "2",
        "name": "GROUND",
        "type": "power_in",
        "description": "Common ground reference. Internally connected to the exposed thermal tab of the DPAK package; both must be tied to the system ground plane for return current and heatsinking. Also the package tab: exposed thermal pad on the back of the DPAK, electrically tied to the GROUND pin (pin 2). Must be soldered to a copper pour to remove heat (RthJC = 8 degC/W)."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated +5 V output, 500 mA rated (higher with adequate heatsinking). Requires a 0.1 uF ceramic to GND close to the pin for transient response and stability."
      }
    ],
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        "pages": 45,
        "sha256": "aab13a77a9bc7601",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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      "footprint": "viewers/footprint.html"
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    "pin1": {
      "pad": "1",
      "at": [
        -5.04,
        -2.28
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TO-252-2@sha256:18c28e5e147d5e9b",
      "mark": "drawn"
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        "seat": "z = 0",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3eb4c99603a4fe837c2fe9308bc174769ded87a785a0df48d2dc441432ee8b4c",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
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        "checked": "2026-10-16",
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  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "TO-252-2(DPAK)",
      "Category": "PMIC",
      "Pins": "4"
    },
    "characteristics": {
      "version": 1,
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      "rows": [
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          "name": "Output voltage",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 4.8,
          "typ": 5,
          "max": 5.2,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output voltage",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 4.75,
          "typ": 5,
          "max": 5.25,
          "conditions": "IO = 5 to 350 mA, VI = 7 to 20 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "VI = 7 to 25 V, IO = 200 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "VI = 8 to 25 V, IO = 200 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "IO = 5 to 500 mA, TJ = 25 °C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "IO = 5 to 200 mA, TJ = 25 °C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "Id",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current change",
          "symbol": "ΔId",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "IO = 5 to 350 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current change",
          "symbol": "ΔId",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "IO = 200 mA, VI = 8 to 25 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "DC input voltage",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "for VO = 5 to 18 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature range",
          "symbol": "TOP",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 150,
          "conditions": "for L78MxxC",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output voltage drift",
          "symbol": "ΔVO/ΔT",
          "kind": "temperature_coefficient",
          "unit": "mV/°C",
          "min": null,
          "typ": -0.5,
          "max": null,
          "conditions": "IO = 5 mA, TJ = 0 to 125 °C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage rejection",
          "symbol": "SVR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 62,
          "max": null,
          "conditions": "VI = 8 to 18 V, f = 120 Hz, IO = 300 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output noise voltage",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "µV",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "B = 10 Hz to 100 kHz",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Short circuit current",
          "symbol": "Isc",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 300,
          "max": null,
          "conditions": "VI = 35 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-case (DPAK)",
          "symbol": "RthJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 8,
          "max": null,
          "conditions": "DPAK",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-ambient (DPAK)",
          "symbol": "RthJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "DPAK",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "for VO = 5 to 18 V",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "L78M05CDT-TR (STMicroelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
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  "variants": [
    {
      "mpn": "L78M05CDT-TR",
      "kind": "packaging"
    },
    {
      "mpn": "L78M05CDT-TRCV",
      "kind": "packaging"
    },
    {
      "mpn": "L78M05CDT-TRCP",
      "kind": "packaging"
    },
    {
      "mpn": "L78M05CDT-TRCH",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T23:37:44.380Z",
  "description": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "visibility": "public",
  "org": "adom"
}