L78L05A

{
  "schema_version": 1,
  "type": "component",
  "slug": "l78l05a",
  "title": "L78L05A",
  "brief": "UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SO-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "l78l05a"
  ],
  "component": {
    "mpn": "L78L05A",
    "manufacturer": "UMW",
    "package": "SO-8",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5d1daadcac62febf9529895d15cb6d6c.pdf",
    "parts": {
      "symbol": "l78l05a.kicad_sym",
      "footprint": "l78l05a.kicad_mod",
      "model_3d": "l78l05a-etched.glb",
      "model_3d_plain": "l78l05a.glb",
      "model_3d_step": "l78l05a-etched.step",
      "model_3d_step_plain": "l78l05a.step",
      "lbr": "l78l05a.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated +5 V output (nominal 4.8-5.2 V at TJ=25 °C). Sources up to 100 mA. Requires a 0.1 µF ceramic capacitor to GND for stability and transient response."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Common/ground reference. Return path for input current, output current, and quiescent current (~2 mA typ)."
      },
      {
        "number": "3",
        "name": "INPUT",
        "type": "power_in",
        "description": "Unregulated DC input, typically 7.5 V to 20 V (absolute max 35 V for VO=3.3-18 V variants). Requires a 0.33 µF ceramic input capacitor to GND close to the pin; dropout ~1.7 V above VO."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/5d1daadcac62febf9529895d15cb6d6c.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": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "l78l05a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "l78l05a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1a5a3153a3f9b5fa6768198ff9ddd8dca09025b76da9704e633da4fbc3c63625",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "UMW",
      "Package": "SO-8",
      "Category": "PMIC",
      "Pins": "3"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "l78l05a"
  ],
  "discovery_pitch": "L78L05A (UMW) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "l78l05a.kicad_sym",
    "l78l05a.kicad_mod",
    "l78l05a.glb",
    "l78l05a.step",
    "l78l05a-etched.step",
    "l78l05a.lbr",
    "docs/hero.png",
    "docs/l78l05a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T23:33:30.625Z"
}