L78L15ABUTR

{
  "schema_version": 1,
  "type": "component",
  "slug": "l78l15abutr",
  "title": "L78L15ABUTR",
  "brief": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "l78l15abutr"
  ],
  "component": {
    "mpn": "L78L15ABUTR",
    "manufacturer": "STMicroelectronics",
    "package": "SOT-89-3",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.st.com/resource/en/datasheet/l78l15abutr.pdf",
    "parts": {
      "symbol": "l78l15abutr.kicad_sym",
      "footprint": "l78l15abutr.kicad_mod",
      "model_3d": "l78l15abutr-etched.glb",
      "model_3d_plain": "l78l15abutr.glb",
      "model_3d_step": "l78l15abutr-etched.step",
      "model_3d_step_plain": "l78l15abutr.step",
      "lbr": "l78l15abutr.lbr"
    },
    "distributor_links": {
      "digikey": "497-7769-2-ND",
      "mouser": "511-L78L15ABU-TR",
      "lcsc": "C81364"
    },
    "pins": [
      {
        "number": "1",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated +15 V positive output. Delivers up to 100 mA with typical dropout of ~1.7 V (VIN must be ≥ ~17 V for full regulation). A 0.1 µF ceramic bypass capacitor to GND close to this pin is recommended to improve transient response and stability."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground / common return for input and output. In the SOT-89 package the GND pin is electrically bonded to the die-attach flag on the bottom of the package, which serves as the primary thermal path to the PCB copper."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated positive DC input. Absolute maximum 35 V for the 15 V variant; recommended VIN ≥ VOUT + dropout (~17 V) for full regulation. Bypass with a 0.33 µF ceramic capacitor to GND close to this pin to prevent oscillation and improve line transient response."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/l78l15abutr.pdf",
        "pages": 45,
        "sha256": "43922ae159face7e",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.95,
        -1.5
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-89-3@sha256:0b8db9f4a8f2547a",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "l78l15abutr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4,
          4.5,
          1.52
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "l78l15abutr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4,
          4.5,
          1.52
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "3bb104b80c2c5b259cd77c63f2ec3e54cd5c5111bb9623a5decaf7e9472392ed",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SOT-89-3",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "43922ae159face7e",
      "rows": [
        {
          "name": "Output voltage (TJ = 25 °C)",
          "symbol": "VO",
          "kind": "tolerance",
          "unit": "V",
          "min": 14.4,
          "typ": 15,
          "max": 15.6,
          "conditions": "TJ = 25 °C",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (IO = 1 to 40 mA)",
          "symbol": "VO",
          "kind": "tolerance",
          "unit": "V",
          "min": 14.25,
          "typ": null,
          "max": 15.75,
          "conditions": "IO = 1 to 40 mA, VI = 17.5 to 30 V",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (IO = 1 to 70 mA)",
          "symbol": "VO",
          "kind": "tolerance",
          "unit": "V",
          "min": 14.25,
          "typ": null,
          "max": 15.75,
          "conditions": "IO = 1 to 70 mA, VI = 23 V",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "∆VO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "VI = 17.5 to 30 V, TJ = 25 °C",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "∆VO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "VI = 20 to 30 V, TJ = 25 °C",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "∆VO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "IO = 1 to 100 mA, TJ = 25 °C",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "∆VO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 75,
          "conditions": "IO = 1 to 40 mA, TJ = 25 °C",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "Id",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 6.5,
          "conditions": "TJ = 25 °C",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "Id",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "TJ = 125 °C",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current change",
          "symbol": "∆Id",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "IO = 1 to 40 mA",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current change",
          "symbol": "∆Id",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "VI = 20 to 30 V",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage rejection",
          "symbol": "SVR",
          "kind": "electrical",
          "unit": "dB",
          "min": 34,
          "typ": 39,
          "max": null,
          "conditions": "VI = 18.5 to 28.5 V, f = 120 Hz, IO = 40 mA, TJ = 25 °C",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "Vd",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.7,
          "conditions": "",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "Output noise voltage",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "µV",
          "min": null,
          "typ": 90,
          "max": null,
          "conditions": "B = 10 Hz to 100 kHz, TJ = 25 °C",
          "source_page": 22,
          "source": "datasheet"
        },
        {
          "name": "DC input voltage",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "VO = 12 to 15 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "IO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "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 (AB grade)",
          "symbol": "TOP",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "for L78LxxAB",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-ambient (SOT-89)",
          "symbol": "RthJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 55,
          "conditions": "Considering 6 cm² of copper Board heat-sink (note 1)",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "l78l15abutr"
  ],
  "discovery_pitch": "L78L15ABUTR (STMicroelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "l78l15abutr.kicad_sym",
    "l78l15abutr.kicad_mod",
    "l78l15abutr.glb",
    "l78l15abutr.step",
    "l78l15abutr-etched.step",
    "l78l15abutr.lbr",
    "docs/hero.png",
    "docs/l78l15abutr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "L78L15ABUTR",
      "kind": "packaging"
    },
    {
      "mpn": "L78L15ABUTRZ",
      "kind": "packaging"
    },
    {
      "mpn": "L78L15ABUTRAZ",
      "kind": "packaging"
    },
    {
      "mpn": "L78L15ABUTRABZ",
      "kind": "packaging"
    },
    {
      "mpn": "L78L15ABUTRCZ",
      "kind": "packaging"
    },
    {
      "mpn": "L78L15ABUTRACZ",
      "kind": "packaging"
    },
    {
      "mpn": "L78L15ABUTRD",
      "kind": "packaging"
    },
    {
      "mpn": "L78L15ABUTRD-TR",
      "kind": "packaging"
    },
    {
      "mpn": "L78L15ABUTRABD",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T23:36:13.970Z"
}