LGS5500EP

{
  "schema_version": 1,
  "type": "component",
  "slug": "lgs5500ep",
  "title": "LGS5500EP",
  "brief": "Legend Si Battery Management, 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",
    "power management (pmic)",
    "lgs5500ep",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LGS5500EP",
    "manufacturer": "Legend Si",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755875379959468032",
    "parts": {
      "symbol": "lgs5500ep.kicad_sym",
      "footprint": "lgs5500ep.kicad_mod",
      "model_3d": "lgs5500ep-hero.glb",
      "model_3d_plain": "lgs5500ep.glb",
      "model_3d_step": "lgs5500ep-etched.step",
      "model_3d_step_plain": "lgs5500ep.step",
      "lbr": "lgs5500ep.lbr"
    },
    "distributor_links": {
      "lcsc": "C5280699"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T20:33:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "ISET",
        "type": "passive",
        "description": "Battery charge-current preset pin; connect an external 1% resistor (≤14kΩ sets 400mA, 20kΩ 600mA, 27kΩ 800mA, ≥36kΩ or open 1000mA)."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Charger input, recommended 4.5V to 5.5V with 20V absolute maximum and 7V input overvoltage protection; place a 10µF or larger ceramic bypass capacitor as close as possible between VIN and GND."
      },
      {
        "number": "3",
        "name": "VL",
        "type": "bidirectional",
        "description": "Charge output pin connected to the battery positive terminal; place at least a 10µF ceramic capacitor on this pin."
      },
      {
        "number": "4",
        "name": "LX",
        "type": "passive",
        "description": "Internal power switch node for the boost converter; connect the power inductor (2.2µH to 10µH, 2.2µH recommended) and the output here."
      },
      {
        "number": "5",
        "name": "VH",
        "type": "power_out",
        "description": "Boost discharge output, default 5V; place at least a 20µF capacitor to GND."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "Test pin; leave floating."
      },
      {
        "number": "7",
        "name": "VSET (LED)",
        "type": "bidirectional",
        "description": "Time-multiplexed pin: LED charge-indicator output that goes high when lit (2mA LED drive with external series resistor), and battery charge-voltage preset input VSET, set by an external 1% resistor (≤14kΩ 4.20V, 20kΩ 4.30V, 27kΩ 4.35V, ≥36kΩ or open 4.40V)."
      },
      {
        "number": "8",
        "name": "NTC",
        "type": "input",
        "description": "Battery temperature sense input; the NTC function is enabled when the pin voltage exceeds 4%VIN and is disabled if the pin is floating or grounded."
      },
      {
        "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 gives functional descriptions but no KiCad ERC pin types; the types above are inferred; ESOP8 pin 7 is multiplexed between the LED indicator and the VSET pin per the datasheet; the pin is ; The ESOP8 pin 8 is NTC and maps to DFN8 pin 1; the DFN8 variant (LGS5500DA) is not extracted. The ES",
          "exposed pad 9 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 12,
        "cost_usd": 0.061,
        "at": "2026-10-09T20:31:38"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755875379959468032",
        "pages": 12,
        "sha256": "e31831e8e286365c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lgs5500ep.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lgs5500ep-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ec018594a52fa1dfc4ef6cdf540b0ed90015ef832cc15a90013df5db62a2b3a4",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Legend Si",
      "Package": "ESOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "9"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lgs5500ep"
  ],
  "discovery_pitch": "LGS5500EP (Legend Si) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lgs5500ep.kicad_sym",
    "lgs5500ep.kicad_mod",
    "lgs5500ep.glb",
    "lgs5500ep.step",
    "lgs5500ep.lbr",
    "docs/hero.png",
    "docs/lgs5500ep-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lgs5500ep-hero.glb",
    "lgs5500ep-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}