XL1509-5.0

{
  "schema_version": 1,
  "type": "component",
  "slug": "xl1509-5-0",
  "title": "XL1509-5.0",
  "brief": "UMW DC-DC Converters, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "xl1509-5.0"
  ],
  "component": {
    "mpn": "XL1509-5.0",
    "manufacturer": "UMW",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2403200255_UMW-Youtai-Semiconductor-Co---Ltd--XL1509-5-0_C2902368.pdf",
    "parts": {
      "symbol": "xl1509-5-0.kicad_sym",
      "footprint": "xl1509-5-0.kicad_mod",
      "model_3d": "xl1509-5-0-etched.glb",
      "model_3d_plain": "xl1509-5-0.glb",
      "model_3d_step": "xl1509-5-0-etched.step",
      "model_3d_step_plain": "xl1509-5-0.step",
      "lbr": "xl1509-5-0.lbr"
    },
    "distributor_links": {
      "lcsc": "C2902368"
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply voltage input. Operates from 4.5 V to 40 V DC (absolute max 45 V). Bypass to GND with a large-value low-ESR capacitor (e.g. 470 uF/35 V CIN + 1 uF ceramic) placed close to the pin to eliminate input switching noise."
      },
      {
        "number": "2",
        "name": "OUTPUT",
        "type": "output",
        "description": "Power switch output (SW node). Internal high-side switch connects VIN to this pin during on-time; the external Schottky catch diode (e.g. 1N5820) and inductor form the buck power stage. Saturation voltage ~1.2 V typ at 2 A."
      },
      {
        "number": "3",
        "name": "FEEDBACK",
        "type": "input",
        "description": "Feedback (FB) sense input. For fixed 5.0 V version this pin is tied to the regulated output; the internal reference is 1.23 V and the fixed-output divider is set on-die. Absolute max -0.3 V to VIN."
      },
      {
        "number": "4",
        "name": "ON/OFF",
        "type": "input",
        "description": "Enable pin, TTL-compatible with hysteresis. Drive low (<0.8 V) to enable the regulator, high (>1.4 V) to shut it down (~80 uA standby). Floating is default low (enabled). Absolute max -0.3 V to VIN."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return. Pins 5, 6, 7, 8 are all GND and should be tied to a solid ground plane; on ESOP-8 the exposed pad also serves as thermal ground."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return. Tie to the same ground plane as pins 5/7/8. Keep this path outside the Schottky-diode-to-output-cap ground loop to avoid switching noise injection."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return. Tie to the same ground plane as pins 5/6/8. Keep this path outside the Schottky-diode-to-output-cap ground loop to avoid switching noise injection."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return. Tie to the same ground plane as pins 5/6/7. Keep this path outside the Schottky-diode-to-output-cap ground loop to avoid switching noise injection."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2403200255_UMW-Youtai-Semiconductor-Co---Ltd--XL1509-5-0_C2902368.pdf",
        "pages": 15,
        "sha256": "bd5713838034a224",
        "source_tier": "lcsc"
      },
      "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_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "xl1509-5-0.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "xl1509-5-0-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "af6b473dea71c75f281c90af8b9c4f9a403189139073b0e0102df219ae91c482",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Unknown",
      "Package": "SOIC-8",
      "Category": "PMIC",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "xl1509-5.0"
  ],
  "discovery_pitch": "XL1509-5.0 (Unknown) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "xl1509-5-0.kicad_sym",
    "xl1509-5-0.kicad_mod",
    "xl1509-5-0.glb",
    "xl1509-5-0.step",
    "xl1509-5-0-etched.step",
    "xl1509-5-0.lbr",
    "docs/hero.png",
    "docs/xl1509-5-0-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "variants": [
    {
      "mpn": "XL1509-5.0",
      "kind": "packaging"
    },
    {
      "mpn": "XL1509-5.0E",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T14:28:18.303Z"
}