XL1509-12

{
  "schema_version": 1,
  "type": "component",
  "slug": "xl1509-12",
  "title": "XL1509-12",
  "brief": "UMW DC-DC Converters, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
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    "pmic",
    "xl1509-12"
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  "component": {
    "mpn": "XL1509-12",
    "manufacturer": "UMW",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2304121600_UMW-Youtai-Semiconductor-Co---Ltd--XL1509-12_C2889160.pdf",
    "parts": {
      "symbol": "xl1509-12.kicad_sym",
      "footprint": "xl1509-12.kicad_mod",
      "model_3d": "xl1509-12-etched.glb",
      "model_3d_plain": "xl1509-12.glb",
      "model_3d_step": "xl1509-12-etched.step",
      "model_3d_step_plain": "xl1509-12.step",
      "lbr": "xl1509-12.lbr"
    },
    "distributor_links": {
      "lcsc": "C2889160"
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply Voltage Input Pin. Operates from 4.5V to 40V DC (absolute max 45V). Bypass VIN to GND with a suitably large capacitor to eliminate input noise."
      },
      {
        "number": "2",
        "name": "OUTPUT",
        "type": "output",
        "description": "Power Switch Output Pin (SW). Internal power transistor switch node that supplies power to the output LC filter. Rated for 2A continuous, internal current limit ~4A. Absolute max -0.3V to VIN."
      },
      {
        "number": "3",
        "name": "FEEDBACK",
        "type": "input",
        "description": "Feedback Pin (FB). Senses the output voltage through an external resistor divider and regulates it. Internal feedback threshold is 1.23V. For the fixed 12V variant the internal divider sets VOUT = 12V (typ, range 11.52V-12.48V)."
      },
      {
        "number": "4",
        "name": "ON/OFF",
        "type": "input",
        "description": "Enable/Shutdown pin with hysteresis. Drive low (<0.8V) to turn the regulator ON, drive high (>1.4V) to turn it OFF. TTL-compatible; floating defaults to low (ON). Input leakage ~5 uA."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin. Route outside the Schottky-diode-to-output-capacitor ground path to avoid coupling switching current spikes into the IC. Tie all GND pins (5,6,7,8) together at the ground plane."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin. Route outside the Schottky-diode-to-output-capacitor ground path to avoid coupling switching current spikes into the IC. Tie all GND pins (5,6,7,8) together at the ground plane."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin. Route outside the Schottky-diode-to-output-capacitor ground path to avoid coupling switching current spikes into the IC. Tie all GND pins (5,6,7,8) together at the ground plane."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin. Route outside the Schottky-diode-to-output-capacitor ground path to avoid coupling switching current spikes into the IC. Tie all GND pins (5,6,7,8) together at the ground plane. On ESOP-8 these pins are also connected to the exposed thermal pad for heatsinking."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2304121600_UMW-Youtai-Semiconductor-Co---Ltd--XL1509-12_C2889160.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": "xl1509-12.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)"
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        "file": "xl1509-12-etched.step",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "a466f8db8ab8b96ec8af7a2861c3276249050998d6d122735053cc29121dc6d4",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "UMW",
      "Package": "SOP-8",
      "Category": "PMIC",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "bd5713838034a224",
      "rows": [
        {
          "name": "Input operation voltage",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (12V version)",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 11.52,
          "typ": 12,
          "max": 12.48,
          "conditions": "VIN=15V to 40V, ILOAD=0.2A to 2A",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Frequency",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "Khz",
          "min": 117,
          "typ": 150,
          "max": 183,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF Pin Threshold - High (Regulator OFF)",
          "symbol": "VON/OFF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.4,
          "typ": null,
          "max": null,
          "conditions": "High (Regulator OFF)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF Pin Threshold - Low (Regulator ON)",
          "symbol": "VON/OFF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "Low (Regulator ON)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 45,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Feedback Pin Voltage",
          "symbol": "VFB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Upper limit is VIN",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF Pin Voltage",
          "symbol": "VON/OFF",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Upper limit is VIN",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Switch Pin Voltage",
          "symbol": "VOutput",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Upper limit is VIN",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (Soldering)",
          "symbol": "TLEAD",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "Soldering, 10 sec",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ESD (HBM)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2000,
          "conditions": "HBM",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance (SOIC8), Junction to Ambient",
          "symbol": "RJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "No Heatsink, Free Air",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "sections": [
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  "discovery_triggers": [
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  "discovery_pitch": "XL1509-12 (UMW) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
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  "visibility": "public",
  "description": "UMW DC-DC Converters, SOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "variants": [
    {
      "mpn": "XL1509-12E1",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T14:27:45.154Z"
}