L78M12ABDT-TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "l78m12abdt-tr",
  "title": "L78M12ABDT-TR",
  "brief": "STMicroelectronics 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.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "L78M12ABDT-TR",
    "manufacturer": "STMicroelectronics",
    "package": "TO-252-2(DPAK)",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
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    "distributor_links": {
      "lcsc": "C61534"
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    "pins": [
      {
        "number": "1",
        "name": "INPUT",
        "type": "power_in",
        "description": "Unregulated DC input to the regulator; for the 12 V grade the datasheet specifies operation with VI = 14.5 to 27 V (AB grade, IO = 5 to 350 mA) and an absolute maximum DC input voltage of 35 V, with a 0.33 µF input bypass capacitor recommended if the regulator is far from the supply filter."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground/common reference pin, formed by the DPAK tab; thermal path to the package tab with junction-to-case thermal resistance RthJC = 8 °C/W and junction-to-ambient RthJA = 100 °C/W for the DPAK package."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated +12 V output (11.75 to 12.25 V at TJ = 25 °C for the AB grade), capable of delivering output current up to 0.5 A with internal current limiting, thermal shutdown and safe-area protection; a 0.1 µF output capacitor improves transient response though it is not required for stability."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-sonnet-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-4-8",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The DPAK pin diagram in Figure 2 (page 4) labels the three terminals only by function (GND on the ta",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 46,
        "cost_usd": 1.0174,
        "at": "2026-09-22T18:17:56"
      },
      "datasheet": {
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        "pages": 46,
        "sha256": "bf25de1549fb4045",
        "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
      }
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    "viewers": {
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.9,
          6.5,
          2.32
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3eb4c99603a4fe837c2fe9308bc174769ded87a785a0df48d2dc441432ee8b4c",
        "checked": "2026-10-07",
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        "checked": "2026-10-16",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "TO-252-2(DPAK)",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "bf25de1549fb4045",
      "rows": [
        {
          "name": "Output voltage",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 11.75,
          "typ": 12,
          "max": 12.25,
          "conditions": "TJ = 25°C",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Output voltage",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 11.5,
          "typ": 12,
          "max": 12.5,
          "conditions": "IO = 5 to 350 mA, VI = 14.5 to 27 V",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "VI = 14.5 to 30 V, IO = 200 mA, TJ = 25°C",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "VI = 16 to 30 V, IO = 200 mA, TJ = 25°C",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 240,
          "conditions": "IO = 5 to 500 mA, TJ = 25°C",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "ΔVO",
          "kind": "electrical",
          "unit": "mV",
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          "typ": null,
          "max": 120,
          "conditions": "IO = 5 to 200 mA, TJ = 25°C",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "Id",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "TJ = 25°C",
          "source_page": 17,
          "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": 17,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current change",
          "symbol": "ΔId",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "IO = 200 mA, VI = 14.5 to 30 V",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "DC input voltage (for VO = 5 to 18 V)",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "for VO = 5 to 18 V (applies to 12 V output)",
          "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": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "for L78MxxAB",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output voltage drift",
          "symbol": "ΔVO/ΔT",
          "kind": "temperature_coefficient",
          "unit": "mV/°C",
          "min": null,
          "typ": -1,
          "max": null,
          "conditions": "IO = 5 mA",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage rejection",
          "symbol": "SVR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 55,
          "max": null,
          "conditions": "VI = 15 to 25 V, f = 120 Hz, IO = 300 mA, TJ = 25°C",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Output noise voltage",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "µV",
          "min": null,
          "typ": 75,
          "max": null,
          "conditions": "B = 10 Hz to 100 kHz, TJ = 25°C",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "TJ = 25°C",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Short circuit current",
          "symbol": "Isc",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 240,
          "max": null,
          "conditions": "TJ = 25°C, VI = 35 V",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Short circuit peak current",
          "symbol": "Iscp",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 700,
          "max": null,
          "conditions": "TJ = 25°C",
          "source_page": 17,
          "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,
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        },
        {
          "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"
        }
      ]
    }
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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  "updated_at": "2026-09-24T23:38:48.964Z"
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