U323

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  "type": "component",
  "slug": "u323",
  "title": "U323",
  "brief": "UNI SEMIC DC-DC Converters, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "u323",
    "factory-2.0.0",
    "extractor-text"
  ],
  "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",
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      "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": {
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        "at": "2026-10-09T11:40:26"
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  "metadata": {
    "specs": {
      "Manufacturer": "UNI SEMIC",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
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          "name": "HV pin voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VDD supply voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "VDD clamp current",
          "symbol": "",
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          "unit": "mA",
          "min": null,
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          "max": 10,
          "conditions": "",
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        },
        {
          "name": "FB, CS, GATE, EN pin voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
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        },
        {
          "name": "Package thermal resistance, junction to ambient (SOP-8)",
          "symbol": "",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 165,
          "conditions": "",
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        },
        {
          "name": "Maximum operating junction temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 160,
          "conditions": "",
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        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Pin temperature (soldering, 10 s)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "",
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        },
        {
          "name": "ESD capability (human body model)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "KV",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "",
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        },
        {
          "name": "ESD capability (machine model)",
          "symbol": "",
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          "unit": "V",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "",
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        },
        {
          "name": "Operating ambient temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "HV pin supply current",
          "symbol": "IHV",
          "kind": "electrical",
          "unit": "mA",
          "min": 1,
          "typ": 5,
          "max": null,
          "conditions": "HV=150V, VDD=0V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "HV pin leakage current",
          "symbol": "IHV_leakage",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "HV=150V, VDD=12V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VDD start-up current",
          "symbol": "IVDD_st",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 100,
          "max": 300,
          "conditions": "无开关工作 (no switching)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VDD operating current",
          "symbol": "IVDD_Op",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 800,
          "max": null,
          "conditions": "Fsw=60kHz",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VDD quiescent current",
          "symbol": "IVDD_Q",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "VDD overvoltage protection threshold",
          "symbol": "VDD_OVP",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 28,
          "max": null,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "VDD clamp voltage",
          "symbol": "VDD_Clamp",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "IVDD=10mA",
          "source_page": 5,
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        },
        {
          "name": "Switching frequency",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "kHz",
          "min": null,
          "typ": 80,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Overload protection (OLP) detection threshold on FB",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.8,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Overload protection delay time",
          "symbol": "TD_OLP",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "",
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        {
          "name": "Leading-edge blanking",
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        {
          "name": "Overcurrent comparator delay",
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        {
          "name": "Peak current threshold on CS",
          "symbol": "VIPK",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": null,
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        {
          "name": "Typical minimum off time",
          "symbol": "TOFF_min_norm",
          "kind": "timing",
          "unit": "us",
          "min": null,
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        {
          "name": "Typical maximum off time",
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          "kind": "timing",
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          "min": null,
          "typ": 1.4,
          "max": null,
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        },
        {
          "name": "Maximum off time in dynamic response mode",
          "symbol": "TOFF_max_FDR",
          "kind": "timing",
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          "min": null,
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          "max": null,
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          "max": null,
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          "name": "Auto-recovery delay time",
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        {
          "name": "Overtemperature protection threshold",
          "symbol": "TSD",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "Note 3 (parameter depends on actual design)",
          "source_page": 6,
          "source": "datasheet"
        }
      ]
    }
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    "name": "Ray",
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