LY5802

{
  "schema_version": 1,
  "type": "component",
  "slug": "ly5802",
  "title": "LY5802",
  "brief": "Lingyang Micro Power Distribution Switches, SOT-23-6. 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)",
    "ly5802",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LY5802",
    "manufacturer": "Lingyang Micro",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "Power Distribution Switches",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3777736eb6182713b45152a1bb884b90.pdf",
    "parts": {
      "symbol": "ly5802.kicad_sym",
      "footprint": "ly5802.kicad_mod",
      "model_3d": "ly5802-hero.glb",
      "model_3d_plain": "ly5802-etched.glb",
      "model_3d_step": "ly5802-etched.step",
      "model_3d_step_plain": "ly5802.step",
      "lbr": "ly5802.lbr"
    },
    "distributor_links": {
      "lcsc": "C46613944"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T00:33:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground, to be connected to the USB input ground only (not to the protected-side DR ground)."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Overvoltage-protection setpoint reference; the OVP threshold is set by an external divider (VOVP = 0.54 V × (R1+R2)/R2, with VFB 0.49 V min, 0.54 V typ, 0.59 V max) or by a Zener plus resistor, and the OVP setpoint should be kept below 12 V."
      },
      {
        "number": "3",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground, to be connected to the USB input ground only (not to the protected-side DR ground)."
      },
      {
        "number": "4",
        "name": "DR",
        "type": "passive",
        "description": "Output negative terminal connected to the ground of the downstream protected circuit, must not be tied to the USB input ground; drain leakage is 1 µA max at DR = 30 V in overvoltage-protection mode."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input connected to the USB input positive supply and the protected circuit positive supply; absolute maximum input voltage is 30 V (-0.3 V to 30 V)."
      },
      {
        "number": "6",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input connected to the USB input positive supply and the protected circuit positive supply; absolute maximum input voltage is 30 V (-0.3 V to 30 V)."
      }
    ],
    "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: Pin table is taken from the text of the pin-description table on page 3 (pins 1-6). The pin diagram ; Pin 4 is named DR in the table, but the cautions on page 4 refer to 'VIN-' and 'OUT-' as pins 1 and ; Pin 4 (DR) type is a judgment call: the datasheet describes it only as the output negative terminal "
        ],
        "pages_sent": 5,
        "cost_usd": 0.0264,
        "at": "2026-10-18T00:31:17"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/3777736eb6182713b45152a1bb884b90.pdf",
        "pages": 5,
        "sha256": "a800f9474c9b972c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ly5802.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ly5802-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "75a6b314b761c647348da54032a6f1e1fd19cafc8a9803644c1847ccc187abf7",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Lingyang Micro",
      "Package": "SOT-23-6",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "a800f9474c9b972cda451656ddb3851a912dab8c12934b8e3599973c27e5c4e1",
      "rows": [
        {
          "name": "最高输入电压 (maximum input voltage)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "储存温度 (storage temperature)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -50,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "工作结温 (operating junction temperature)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -25,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "最大功耗 (maximum power dissipation)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "FB 反馈电压 (FB feedback voltage)",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 0.49,
          "typ": 0.54,
          "max": 0.59,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "开关内阻 (switch on-resistance)",
          "symbol": "Rdson",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 35,
          "max": 50,
          "conditions": "VIN=5V，Id=1A",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "最大导通电流 (maximum on-state current)",
          "symbol": "IMAX",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 2.5,
          "conditions": "VIN=5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DR 漏电流 (DR leakage current)",
          "symbol": "IDSS",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "DR=30V，过压保护模式",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "稳压管电流 (zener diode current rating for FB zener mode)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "FB接稳压管与电阻方式，建议使用6.1V稳压管，稳压管电流规格大于5mA即可",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ly5802"
  ],
  "discovery_pitch": "LY5802 (Lingyang Micro) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "ly5802.kicad_mod",
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    "ly5802.lbr",
    "docs/hero.png",
    "docs/ly5802-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ly5802-hero.glb",
    "ly5802-hero.overlay.json",
    "ly5802-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}