XL1509-ADJ

{
  "schema_version": 1,
  "type": "component",
  "slug": "xl1509-adj",
  "title": "XL1509-ADJ",
  "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-adj"
  ],
  "component": {
    "mpn": "XL1509-ADJ",
    "manufacturer": "UMW",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "docs/xl1509-adj-datasheet.pdf",
    "parts": {
      "symbol": "xl1509-adj.kicad_sym",
      "footprint": "xl1509-adj.kicad_mod",
      "model_3d": "xl1509-adj-etched.glb",
      "model_3d_plain": "xl1509-adj.glb",
      "model_3d_step": "xl1509-adj-etched.step",
      "model_3d_step_plain": "xl1509-adj.step",
      "lbr": "xl1509-adj.lbr"
    },
    "distributor_links": {
      "lcsc": "C2681227"
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply Voltage Input Pin. Operates from a 4.5 V to 40 V DC supply (absolute max 45 V). Bypass VIN to GND with a suitably large capacitor (e.g. 470 uF/35 V in the typical application) 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 external inductor/Schottky diode network driving the output. Rated -0.3 V to VIN."
      },
      {
        "number": "3",
        "name": "FEEDBACK",
        "type": "input",
        "description": "Feedback Pin (FB). Through an external resistor divider network, FEEDBACK senses the output voltage and regulates it. The internal feedback threshold voltage is 1.23 V. Rated -0.3 V to VIN."
      },
      {
        "number": "4",
        "name": "ON/OFF",
        "type": "input",
        "description": "Enable Pin with hysteresis. Drive ON/OFF low (TTL) to turn on the device; drive high to turn it off. Floating defaults to low (device ON). Rated -0.3 V to VIN."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground Pin. Care must be taken in layout: this pin should be placed outside of the Schottky diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into XL1509. Pins 5, 6, 7, 8 are all GND."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground Pin. Care must be taken in layout: this pin should be placed outside of the Schottky diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into XL1509. Pins 5, 6, 7, 8 are all GND."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground Pin. Care must be taken in layout: this pin should be placed outside of the Schottky diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into XL1509. Pins 5, 6, 7, 8 are all GND."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground Pin. Care must be taken in layout: this pin should be placed outside of the Schottky diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into XL1509. Pins 5, 6, 7, 8 are all GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "docs/xl1509-adj-datasheet.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-adj.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-adj-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": "3603e4b63e5ad12aba3486e2e1a262a5abce76f6b0a2aa4f51e3745030bf87c2",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "UMW",
      "Package": "SOIC-8",
      "Category": "PMIC",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "bd5713838034a224",
      "rows": [
        {
          "name": "Oscillator Frequency",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "Khz",
          "min": 117,
          "typ": 150,
          "max": 183,
          "conditions": "VFB=0",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "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 (ADJ version)",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 1.193,
          "typ": 1.23,
          "max": 1.267,
          "conditions": "TA=25°C; VIN=4.5V to 40V; ILOAD=0.2A to 2A; VIN=12V, VOUT=3V, IOUT=2A",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input operation voltage (recommended)",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 40,
          "conditions": "Pin description: XL1509 operates from a 4.5V to 40V DC voltage",
          "source_page": 2,
          "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 printed as 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 printed as 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 printed as 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": "ESD",
          "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": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "xl1509-adj"
  ],
  "discovery_pitch": "XL1509-ADJ (UMW) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "xl1509-adj.kicad_sym",
    "xl1509-adj.kicad_mod",
    "xl1509-adj.glb",
    "xl1509-adj.step",
    "xl1509-adj-etched.step",
    "xl1509-adj.lbr",
    "docs/hero.png",
    "docs/xl1509-adj-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "variants": [
    {
      "mpn": "XL1509-ADJUMW XL1509-ADJ",
      "kind": "different-part"
    },
    {
      "mpn": "XL1509-ADJUMW XL1509E-ADJ",
      "kind": "different-part"
    }
  ],
  "updated_at": "2026-09-25T14:28:35.899Z"
}