78L15

{
  "schema_version": 1,
  "type": "component",
  "slug": "78l15",
  "title": "78L15",
  "brief": "UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "pmic",
    "78l15"
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  "component": {
    "mpn": "78L15",
    "manufacturer": "UMW",
    "package": "SOT-89",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2407171721_UMW-Youtai-Semiconductor-Co---Ltd--78L15_C5692991.pdf",
    "parts": {
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      "footprint": "78l15.kicad_mod",
      "model_3d": "78l15-etched.glb",
      "model_3d_plain": "78l15.glb",
      "model_3d_step": "78l15-etched.step",
      "model_3d_step_plain": "78l15.step",
      "lbr": "78l15.lbr"
    },
    "distributor_links": {
      "lcsc": "C5692991"
    },
    "pins": [
      {
        "number": "1",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated +15V output, up to 100 mA. Recommended output capacitor Co = 0.1 µF ceramic to ground for stability."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground reference for input and output. Carries the quiescent current (typ 2.2 mA, max 6 mA for 78L15)."
      },
      {
        "number": "3",
        "name": "INPUT",
        "type": "power_in",
        "description": "Unregulated DC input. Absolute maximum Vi = 35 V. Recommended input capacitor C1 = 0.33 µF to ground if the regulator is located far from the power-supply filter."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2407171721_UMW-Youtai-Semiconductor-Co---Ltd--78L15_C5692991.pdf",
        "pages": 22,
        "sha256": "3eeae843c9f51425",
        "source_tier": "lcsc"
      },
      "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": "78l15.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
        ],
        "zmin_mm": 0.0,
        "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": "78l15-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "92fd64085ed4976b0f3264943aad0e8019d2432c4c047a265e60b0b12aa87567",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "UMW",
      "Package": "SOT-89",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "3eeae843c9f51425",
      "rows": [
        {
          "name": "Output voltage (TJ=25°C)",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 14.4,
          "typ": 15,
          "max": 15.6,
          "conditions": "TJ=25°C; VI=23V, IO=40mA",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (line and load)",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 14.25,
          "typ": 15,
          "max": 15.75,
          "conditions": "17.5V≤VI≤30V, IO=1mA~40mA",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (line and load, full range)",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 14.25,
          "typ": 15,
          "max": 15.75,
          "conditions": "17.5V≤VI≤VMAX, IO=1mA~70mA",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (for VO=3.3 to 18V)",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "For VO=3.3 to 18V (applies to 78L15)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (for VO=24V)",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "For VO=24V only; not applicable to 78L15",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation (SOT-89)",
          "symbol": "Pd",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature range",
          "symbol": "TOPR",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -20,
          "typ": null,
          "max": 120,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "sections": [
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "78L15 (UMW) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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  "files": [
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    "78l15-etched.step",
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    "viewers/footprint.html"
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  "visibility": {
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  },
  "updated_at": "2026-09-24T15:22:24.050Z"
}