U3500C

{
  "slug": "u3500c",
  "version": "0.1.0",
  "type": "component",
  "description": "UNI-SEMIC(宇力半导体) DC-DC Converters, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "u3500c",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "u3500c.kicad_sym",
    "u3500c.kicad_mod",
    "u3500c.glb",
    "u3500c.step",
    "u3500c.lbr",
    "docs/hero.png",
    "docs/u3500c-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "u3500c-hero.glb",
    "u3500c-hero.overlay.json",
    "u3500c-etched.glb"
  ],
  "component": {
    "mpn": "U3500C",
    "manufacturer": "UNI-SEMIC(宇力半导体)",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756968295637356544",
    "parts": {
      "symbol": "u3500c.kicad_sym",
      "footprint": "u3500c.kicad_mod",
      "model_3d": "u3500c-hero.glb",
      "model_3d_plain": "u3500c-etched.glb",
      "model_3d_step": "u3500c-etched.step",
      "model_3d_step_plain": "u3500c.step",
      "lbr": "u3500c.lbr"
    },
    "distributor_links": {
      "lcsc": "C20416756"
    },
    "distributor_check": {
      "checked_at": "2026-11-03T03:47:01Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply: VIN supplies power to all internal control circuitry, with an absolute maximum pin voltage of 200 V (range -0.3 to 200 V)."
      },
      {
        "number": "2",
        "name": "EN",
        "type": "input",
        "description": "Enable input: pull EN below the specified threshold (VENL max 1 V) or leave it floating to shut down the U3500C, and pull it above the threshold (VENH min 2.4 V) to enable it; EN absolute maximum is 7 V."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the voltage hysteretic comparators, with a feedback threshold VFBH of 1.25 V min, 1.3 V typ, and an absolute maximum voltage of 7 V."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Internal ground connection, which the datasheet states can be left suspended."
      },
      {
        "number": "5",
        "name": "VB",
        "type": "power_out",
        "description": "Positive supply for the internal floating high-side MOSFET driver; a bypass capacitor is connected between VB and VS, with a VB supply voltage rating of 200+20 V."
      },
      {
        "number": "6",
        "name": "SW",
        "type": "output",
        "description": "Switch node output that drives the external power MOSFET, with a pin voltage range of -0.3 to 200 V."
      },
      {
        "number": "7",
        "name": "VS",
        "type": "power_in",
        "description": "Switch source, serving as the low-potential reference for the upper gate drive, with a pin voltage range of -0.3 to 200 V."
      },
      {
        "number": "8",
        "name": "IS",
        "type": "input",
        "description": "Current sensing input for peak current detection, with a peak current threshold VIS of 250 mV typical."
      },
      {
        "number": "9",
        "name": "EP-GND",
        "type": "power_in",
        "description": "Ground exposed pad, which should be connected to the GND plane for optimal thermal performance and placed close to the output capacitor to avoid high-current switch paths."
      }
    ],
    "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 exposed pad is printed as 'EP-GND' with pin number 9 in the datasheet pin table, even though ESO; VB and VS are types judged from their functions (bootstrap supply and switch source reference); the ; The datasheet describes IS only as 'Current detection / Current Sensing Input' and gives a 250 mV ty"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0679,
        "at": "2026-11-03T03:46:48"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756968295637356544",
        "pages": 13,
        "sha256": "357b1dd967f4ca00",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "u3500c.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": "2026-11-03",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "u3500c-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": "c7c9e783f23236f335e745f267eee438ba6fb92dfd5f44ab48374108f0ca8e33",
        "checked": "2026-11-03",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}