LGS7381

{
  "slug": "lgs7381",
  "version": "0.1.0",
  "type": "component",
  "description": "Legend Si Battery Management, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lgs7381",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lgs7381.kicad_sym",
    "lgs7381.kicad_mod",
    "lgs7381.glb",
    "lgs7381.step",
    "lgs7381.lbr",
    "docs/hero.png",
    "docs/lgs7381-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "LGS7381",
    "manufacturer": "Legend Si",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756398856626561024",
    "parts": {
      "symbol": "lgs7381.kicad_sym",
      "footprint": "lgs7381.kicad_mod",
      "model_3d": "lgs7381-etched.glb",
      "model_3d_plain": "lgs7381.glb",
      "model_3d_step": "lgs7381-etched.step",
      "model_3d_step_plain": "lgs7381.step",
      "lbr": "lgs7381.lbr"
    },
    "distributor_links": {
      "lcsc": "C5299900"
    },
    "pins": [
      {
        "number": "1",
        "name": "CE",
        "type": "input",
        "description": "Enable input pin; high level enables charging, low level disables charging; connect to VCC or MCU control."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground reference."
      },
      {
        "number": "3",
        "name": "BAT",
        "type": "output",
        "description": "Battery charging output pin; connect to battery positive terminal with at least 10μF ceramic capacitor to ground."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply input pin with recommended operating voltage 4.5V to 6V; bypass to ground with at least 10μF ceramic capacitor placed close to pin."
      },
      {
        "number": "5",
        "name": "PROG",
        "type": "output",
        "description": "Charging current setting and monitoring output pin; pin voltage fixed at 0.05V (SC), 0.1V (TC), or 1V (CC) depending on charging mode; external 1% resistor to ground sets current via IBAT = (VPROG / RPROG) × 1000."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 11,
        "cost_usd": 0.1261,
        "at": "2026-09-22T06:23:12"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756398856626561024",
        "pages": 11,
        "sha256": "630ea8fc9f8f8ca1",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lgs7381.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": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lgs7381-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": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "a1cb42d77f1856c9ebb9ad40a5ef405fa8ad6cebae40af9a8451e518bf2b86b5",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}