UM1350

{
  "slug": "um1350",
  "version": "0.1.0",
  "type": "component",
  "description": "Union Semiconductor LED Drivers, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "led drivers",
    "um1350",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "um1350.kicad_sym",
    "um1350.kicad_mod",
    "um1350.glb",
    "um1350.step",
    "um1350.lbr",
    "docs/hero.png",
    "docs/um1350-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "um1350-hero.glb",
    "um1350-hero.overlay.json",
    "um1350-etched.glb"
  ],
  "component": {
    "mpn": "UM1350",
    "manufacturer": "Union Semiconductor",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "LED Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603085516330057728",
    "parts": {
      "symbol": "um1350.kicad_sym",
      "footprint": "um1350.kicad_mod",
      "model_3d": "um1350-hero.glb",
      "model_3d_plain": "um1350-etched.glb",
      "model_3d_step": "um1350-etched.step",
      "model_3d_step_plain": "um1350.step",
      "lbr": "um1350.lbr"
    },
    "distributor_links": {
      "lcsc": "C7542862"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T20:40:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "LX",
        "type": "output",
        "description": "Drain of the internal NDMOS switch, rated for -0.3 to +40 V on LX and a switch output current of 500 mA absolute maximum."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference for the device."
      },
      {
        "number": "3",
        "name": "VSET",
        "type": "input",
        "description": "Multi-function on/off and brightness control: leave floating for nominal current, drive below 0.2 V to turn the output off, drive with 0.3 V to 2.5 V DC or a PWM signal for 12% to 100% (or 1% to 100% below 500 Hz) dimming, with an absolute maximum of -0.3 to +6 V."
      },
      {
        "number": "4",
        "name": "ISENSE",
        "type": "input",
        "description": "Connect the current sense resistor RS from this pin to VIN to set the nominal average output current (IOUTnom = 100 mV/RS), with ISENSE voltage rated +0.3 to -5 V relative to VIN."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin, operating range 6 V to 30 V, with an absolute maximum of -0.3 to +40 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet gives the pinout only for the SOT23-5 package, and the ordering table lists only UM135; Pin types are inferred, not printed in the datasheet: LX is classed as output because it is the drai; Pin 4 ISENSE absolute maximum is printed as '+0.3 to -5 (Note 2)' with Note 2 stating it is measured"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0579,
        "at": "2026-10-17T20:38:41"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603085516330057728",
        "pages": 15,
        "sha256": "f28c059281820b66",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "um1350.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "um1350-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5986f5b89d9d34b3fd0cfd9c0cfc1bbd232a1acf0155851a9ccc0650d5414811",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}