U323

{
  "slug": "u323",
  "version": "0.1.0",
  "type": "component",
  "description": "UNI SEMIC DC-DC Converters, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "u323",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "u323.kicad_sym",
    "u323.kicad_mod",
    "u323.glb",
    "u323.step",
    "u323.lbr",
    "docs/hero.png",
    "docs/u323-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "u323-hero.glb",
    "u323-hero.overlay.json"
  ],
  "component": {
    "mpn": "U323",
    "manufacturer": "UNI SEMIC",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2311161809_UNI-SEMIC-U323_C5298150.pdf",
    "parts": {
      "symbol": "u323.kicad_sym",
      "footprint": "u323.kicad_mod",
      "model_3d": "u323-hero.glb",
      "model_3d_plain": "u323.glb",
      "model_3d_step": "u323-etched.step",
      "model_3d_step_plain": "u323.step",
      "lbr": "u323.lbr"
    },
    "distributor_links": {
      "lcsc": "C5298150"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T11:43:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Chip supply pin; the datasheet rates VDD supply voltage at 25 V max, VDD clamp current at 10 mA, VDD clamp voltage at 30 V (typ), and VDD overvoltage protection threshold at 28 V (typ)."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Chip reference ground for the device."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable input: driving it to logic high (stated as \"1V\" in the datasheet) enables the IC, and driving it to logic low puts the IC into shutdown mode; the pin voltage is rated -0.3 V to 7 V."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Feedback input used for output voltage regulation and overload protection, with an OLP detection threshold of 1.8 V (typ); the pin voltage is rated -0.3 V to 7 V."
      },
      {
        "number": "5",
        "name": "CS",
        "type": "output",
        "description": "Peak current detection pin that sets the internal peak current threshold (0.2 V typ) and abnormal overcurrent threshold (0.4 V typ); the pin voltage is rated -0.3 V to 7 V."
      },
      {
        "number": "6",
        "name": "GATE",
        "type": "output",
        "description": "Power MOSFET drive output; the pin voltage is rated -0.3 V to 7 V."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "Non-functional pin; leave floating in use."
      },
      {
        "number": "8",
        "name": "HV",
        "type": "power_in",
        "description": "Internal high-voltage start-up and supply pin, rated -0.3 V to 200 V, that charges the VDD capacitor during start-up."
      }
    ],
    "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 classifies CS as 'O' (output), but its function is peak-current sensing of the inducto; The EN logic-high level is printed as '1V' in the pin description, which is unusually low and may be; Pin limits for VDD and HV are taken from the absolute maximum and electrical characteristics tables "
        ],
        "pages_sent": 13,
        "cost_usd": 0.042,
        "at": "2026-10-09T11:40:26"
      },
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2311161809_UNI-SEMIC-U323_C5298150.pdf",
        "pages": 13,
        "sha256": "a870cdac11d209c2",
        "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"
    },
    "models_3d": [
      {
        "file": "u323.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "u323-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "01b92f197190def93b3864f38f6a56413ede15e3bd01cf84e4e18a7f86f4cef6",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}