DX2281E

{
  "schema_version": 1,
  "type": "component",
  "slug": "dx2281e",
  "title": "DX2281E",
  "brief": "Dersem LED Drivers, ESOP-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",
    "led drivers",
    "dx2281e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "DX2281E",
    "manufacturer": "Dersem",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "LED Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603378644966522880",
    "parts": {
      "symbol": "dx2281e.kicad_sym",
      "footprint": "dx2281e.kicad_mod",
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      "model_3d_plain": "dx2281e-etched.glb",
      "model_3d_step": "dx2281e-etched.step",
      "model_3d_step_plain": "dx2281e.step",
      "lbr": "dx2281e.lbr"
    },
    "distributor_links": {
      "lcsc": "C22364160"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T21:28:23Z",
      "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": "Supply input pin; the VIN port is rated -0.5 to 500 V (absolute maximum) with a 500 V breakdown minimum, and quiescent current is 0.1 to 0.4 mA at VIN = 10 V."
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "No-connect pin, left floating (datasheet lists it as a suspended pin)."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground reference pin."
      },
      {
        "number": "4",
        "name": "DIM",
        "type": "input",
        "description": "PWM dimming input with a logic-high threshold of 2 V minimum and logic-low threshold of 1.5 V maximum, absolute maximum -0.5 to 8 V, and OUT is off by default when DIM is left floating."
      },
      {
        "number": "5",
        "name": "REXT",
        "type": "passive",
        "description": "Output-current setting pin where IOUT = 0.6 V / R_EXT, with REXT voltage of 0.57 to 0.63 V (typ. 0.60 V) and absolute maximum -0.5 to 8 V."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No-connect pin, left floating (datasheet lists it as a suspended pin)."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No-connect pin, left floating (datasheet lists it as a suspended pin)."
      },
      {
        "number": "8",
        "name": "OUT",
        "type": "output",
        "description": "Constant-current output to the LED string, rated 5 to 120 mA with an OUT port voltage rating of 500 V, and a constant-current knee (VOUT_MIN) of 6.5 V maximum at 30 mA."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 pin table marks these as NC (suspended); they are listed as separate pins since the ta; The REXT pin type (passive) is an inference from its role as a set-point reference, not a type state; The pinout pin-number mapping comes from the text pin table on page 2 (管脚说明); the pin diagram image ",
          "exposed pad 9 added from the footprint"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0415,
        "at": "2026-10-16T21:28:09"
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        "sha256": "b8e8c9b747c19a79",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Dersem",
      "Package": "ESOP-8",
      "Category": "LED Drivers",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
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          "name": "恒流拐点 (OUT 端口电压下限)",
          "symbol": "VOUT_MIN",
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          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6.5,
          "conditions": "IOUT = 30mA",
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        {
          "name": "OUT 端口耐压",
          "symbol": "VOUT_BV",
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        },
        {
          "name": "VIN 端口耐压",
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          "unit": "V",
          "min": 500,
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        {
          "name": "OUT 输出电流",
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          "unit": "mA",
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        {
          "name": "静态电流",
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          "min": 0.1,
          "typ": 0.25,
          "max": 0.4,
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        },
        {
          "name": "REXT 端口电压",
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          "min": 0.57,
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          "source_page": 3,
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        },
        {
          "name": "DIM 端口下拉电流",
          "symbol": "I_DIM",
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          "unit": "uA",
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          "max": 85,
          "conditions": "DIM=5V",
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        {
          "name": "输入信号阈值电压 DIM (高电平)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
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        {
          "name": "输入信号阈值电压 DIM (低电平)",
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          "min": 0,
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          "max": 1.5,
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        },
        {
          "name": "调光范围",
          "symbol": "I_DDIM",
          "kind": "electrical",
          "unit": "%",
          "min": 0,
          "typ": null,
          "max": 100,
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        {
          "name": "调光频率范围",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "KHz",
          "min": 1,
          "typ": null,
          "max": 20,
          "conditions": "",
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        },
        {
          "name": "IOUT 片间偏差 (printed ±5%)",
          "symbol": "DIOUT",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "IOUT=30mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电流负温度补偿起始点",
          "symbol": "TSC",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 130,
          "max": null,
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        {
          "name": "VIN 端口电压",
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          "kind": "absolute_maximum",
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          "min": -0.5,
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          "max": 500,
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        },
        {
          "name": "OUT 端口电压",
          "symbol": "VOUT",
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        {
          "name": "DIM 端口电压",
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          "unit": "V",
          "min": -0.5,
          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "REXT 端口电压",
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          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 8,
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        },
        {
          "name": "功耗",
          "symbol": "PD",
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        {
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          "name": "HBM 人体放电模式 ESD",
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          "kind": "absolute_maximum",
          "unit": "KV",
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        },
        {
          "name": "PN 结到环境的热阻",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 65,
          "max": null,
          "conditions": "TA=25°C 自然对流，JEDEC JESD51 单层导热试验板 (注 2)",
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        }
      ]
    }
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  "discovery_pitch": "DX2281E (Dersem) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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