MST2218KCD

{
  "schema_version": 1,
  "type": "component",
  "slug": "mst2218kcd",
  "title": "MST2218KCD",
  "brief": "MST DC-DC Converters, SOIC-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)",
    "mst2218kcd",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "MST2218KCD",
    "manufacturer": "MST",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588881761904705536",
    "parts": {
      "symbol": "mst2218kcd.kicad_sym",
      "footprint": "mst2218kcd.kicad_mod",
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      "model_3d_step": "mst2218kcd-etched.step",
      "model_3d_step_plain": "mst2218kcd.step",
      "lbr": "mst2218kcd.lbr"
    },
    "distributor_links": {
      "lcsc": "C324597"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T09:02:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IS",
        "type": "input",
        "description": "Source of the integrated power MOSFET; a sense resistor to GND sets the primary peak current (Ipeak = VIS/Rs, with the 150 mV current sampling threshold), and the Input (VS/ZS/IS) to GND absolute maximum is 5.3 V."
      },
      {
        "number": "2",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply pin for the chip, connected to the positive side of the input capacitor and the clamp resistor; the datasheet gives an undervoltage lockout of 3.3 to 3.5 V, an input clamp voltage of 10 to 16 V, and an absolute maximum of 15 V to GND."
      },
      {
        "number": "3",
        "name": "VS",
        "type": "power_in",
        "description": "Voltage feedback input used to sense the output voltage, with a monitoring threshold of 1.92 to 2.08 V and an absolute maximum input of 5.3 V to GND."
      },
      {
        "number": "4",
        "name": "ZS",
        "type": "input",
        "description": "Input of the zero-crossing comparator, with a short-circuit protection threshold of 1.5 V and an absolute maximum input of 5.3 V to GND."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "System ground, connected to the negative terminal of the input supply and to the negative sides of the input and output capacitors."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Enlarged copper foil at this pin increases the heat dissipation capability of the control circuit; the datasheet gives no other electrical function for it."
      },
      {
        "number": "7",
        "name": "SW",
        "type": "output",
        "description": "Drain of the integrated 100 V power MOSFET (absolute maximum 100 V to GND, RDSon 100 mΩ at VCC=10V, ID=3A); enlarged copper here improves MOSFET heat dissipation, and the snubber capacitor must keep SW below 70 V after turn-off."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "output",
        "description": "Second SW pin shown in the application circuit and package drawing as the power MOSFET drain; the pin table row gives no name or description for it."
      }
    ],
    "provenance": {
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        "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 pin table leaves the name of pin 6 blank and gives no name or description for pin 8. Their names; The package drawing text lists the pin labels in the order IS, VCC, VS, ZS, SW, SW, GND, GND, which ; The ordering information section (产品封装及订购信息) has no readable content in the extracted text, so the M"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0277,
        "at": "2026-10-18T09:01:07"
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        "pages": 6,
        "sha256": "5b1df0375802a189",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-18",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "MST",
      "Package": "SOIC-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "characteristics": {
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      "source": "datasheet",
      "datasheet_sha256": "5b1df0375802a189617780f9172adbc2fc0ae263ed0e0629543c6ef1fb47b628",
      "rows": [
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          "symbol": "",
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        },
        {
          "name": "SW to GND",
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        },
        {
          "name": "Input (VS\\ZS\\IS) to GND",
          "symbol": "",
          "kind": "absolute_maximum",
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          "min": -0.3,
          "typ": null,
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          "conditions": "",
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        {
          "name": "IS peak current",
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          "conditions": "",
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        },
        {
          "name": "工作环境温度 (operating ambient temperature)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
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          "max": 85,
          "conditions": "",
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        {
          "name": "存储温度 (storage temperature)",
          "symbol": "",
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          "unit": "℃",
          "min": -40,
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        },
        {
          "name": "封装热阻 SOP8 (package thermal resistance)",
          "symbol": "",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
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          "conditions": "SOP8",
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        },
        {
          "name": "封装最大功耗 SOP8 (max package power dissipation)",
          "symbol": "Pdmax",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
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          "conditions": "SOP8",
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        },
        {
          "name": "人体模式 HBM (ESD)",
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          "unit": "kV",
          "min": null,
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          "conditions": "",
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        {
          "name": "Latch-up",
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          "unit": "mA",
          "min": null,
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          "max": 200,
          "conditions": "",
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        },
        {
          "name": "工作电压范围 (operating voltage range)",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": 4.5,
          "typ": 14,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "输入钳位电压 (input clamp voltage)",
          "symbol": "VCCCLAMP",
          "kind": "electrical",
          "unit": "V",
          "min": 10,
          "typ": 13,
          "max": 16,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "输入钳位电流 (input clamp current)",
          "symbol": "ICLAMP",
          "kind": "electrical",
          "unit": "mA",
          "min": 30,
          "typ": null,
          "max": null,
          "conditions": "VCC=15V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "工作电流 (operating current)",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "VCC=8V, 工作频率 100kHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电压监测阈值 (voltage monitor threshold)",
          "symbol": "VS",
          "kind": "electrical",
          "unit": "V",
          "min": 1.92,
          "typ": 2,
          "max": 2.08,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VCC 欠压保护门限 (UVLO threshold)",
          "symbol": "VUVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 3.3,
          "typ": null,
          "max": 3.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VS 内部延时触发电平 (VS internal delay trigger level)",
          "symbol": "Vssth",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2.5,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ZS 输出短路保护阈值 (ZS output short-circuit protection threshold)",
          "symbol": "Vzssth",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "VS 输出短路保护阈值 (VS output short-circuit protection threshold)",
          "symbol": "Vvssth",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.15,
          "max": null,
          "conditions": "连续 8 个周期",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "前沿消隐时间 (leading edge blanking time)",
          "symbol": "Tonmin",
          "kind": "timing",
          "unit": "uS",
          "min": null,
          "typ": 1.3,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "最小关断时间 (minimum off time)",
          "symbol": "Toffmin",
          "kind": "timing",
          "unit": "uS",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电流采样门限 (current sense threshold)",
          "symbol": "VIS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "短路保护关断时间 (short-circuit protection off time)",
          "symbol": "Tprotect",
          "kind": "timing",
          "unit": "mS",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "输出管导通阻抗 (output MOSFET on-resistance)",
          "symbol": "RDSon",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "VCC=10V，ID=3A（脉冲测试）",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "热关断温度 (thermal shutdown temperature)",
          "symbol": "TOFF",
          "kind": "thermal",
          "unit": "℃",
          "min": null,
          "typ": 140,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "热关断迟滞 (thermal shutdown hysteresis)",
          "symbol": "THYS",
          "kind": "thermal",
          "unit": "℃",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "MST2218KCD (MST) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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