XL4301E1

{
  "schema_version": 1,
  "type": "component",
  "slug": "xl4301e1",
  "title": "XL4301E1",
  "brief": "XLSEMI DC-DC Converters, SOIC-8-EP. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "xl4301e1"
  ],
  "component": {
    "mpn": "XL4301E1",
    "manufacturer": "XLSEMI",
    "package": "SOIC-8-EP",
    "pin_count": 9,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/366c3df63d9bc1809f18c4e545ff7b89.pdf",
    "parts": {
      "symbol": "xl4301e1.kicad_sym",
      "footprint": "xl4301e1.kicad_mod",
      "model_3d": "xl4301e1-etched.glb",
      "model_3d_plain": "xl4301e1.glb",
      "model_3d_step": "xl4301e1-etched.step",
      "model_3d_step_plain": "xl4301e1.step",
      "lbr": "xl4301e1.lbr"
    },
    "distributor_links": {
      "lcsc": "C73024"
    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected. Leave floating or tie to ground per PCB convention."
      },
      {
        "number": "2",
        "name": "SW",
        "type": "output",
        "description": "Power switch output. Drain of the internal high-side MOSFET; connects to the external inductor/catch diode of the buck converter. The back exposed pad is internally tied to SW and should be connected to this node on the PCB."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the IC and the return for the input/output bypass capacitors."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the internal error amplifier. Senses the regulated output through an external resistor divider; regulation threshold is 1.25 V typical (VOUT = 1.25 V x (1 + R2/R1))."
      },
      {
        "number": "5",
        "name": "CS",
        "type": "input",
        "description": "Output current sense input for the constant-current loop. Load current is set by an external sense resistor: Iload = 0.11 V / RCS (VCS typ. 110 mV)."
      },
      {
        "number": "6",
        "name": "LC",
        "type": "input",
        "description": "Output cable-loss compensation input. A user-programmable resistor (R3) from this pin to ground selects the amount of voltage-drop compensation added to the output as a function of load current (see Table 2)."
      },
      {
        "number": "7",
        "name": "VC",
        "type": "passive",
        "description": "Internal voltage regulator bypass pin. Connect a 1 uF capacitor from VC to VIN to decouple the internal LDO that supplies the control circuitry."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply voltage input, 8 V to 40 V DC operating range (45 V absolute maximum). Bypass to GND with a suitably large low-ESR capacitor (e.g. 100 uF/50 V) close to the pin to eliminate input noise."
      },
      {
        "number": "9",
        "name": "EXPOSED PAD",
        "type": "power_in",
        "description": "Exposed thermal pad. Present in the package land pattern; connect it per the manufacturer datasheet thermal recommendation. Added because the footprint carries this pad and the symbol had no pin for it.",
        "source": "derived-from-footprint"
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/366c3df63d9bc1809f18c4e545ff7b89.pdf",
        "pages": 10,
        "sha256": "3f3b4c16d0fca911",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "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-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm@sha256:5848244c5e72002e",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "xl4301e1.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "xl4301e1-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6ab8b381059292c539439554ef25b6333276ed041e8ac2418b8fb8d142e36d8b",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "XLSEMI",
      "Package": "SOIC-8-EP",
      "Category": "PMIC",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "xl4301e1"
  ],
  "discovery_pitch": "XL4301E1 (XLSEMI) 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",
    "xl4301e1.kicad_sym",
    "xl4301e1.kicad_mod",
    "xl4301e1.glb",
    "xl4301e1.step",
    "xl4301e1.lbr",
    "docs/hero.png",
    "docs/xl4301e1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "xl4301e1-etched.step"
  ],
  "variants": [
    {
      "mpn": "XL4301E1",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T14:33:56.844Z"
}