LGS4056HEP

{
  "slug": "lgs4056hep",
  "version": "0.1.0",
  "type": "component",
  "description": "Legend Si Battery Management, ESOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lgs4056hep",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lgs4056hep.kicad_sym",
    "lgs4056hep.kicad_mod",
    "lgs4056hep.glb",
    "lgs4056hep.step",
    "lgs4056hep.lbr",
    "docs/hero.png",
    "docs/lgs4056hep-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "LGS4056HEP",
    "manufacturer": "Legend Si",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756398710047678464",
    "parts": {
      "symbol": "lgs4056hep.kicad_sym",
      "footprint": "lgs4056hep.kicad_mod",
      "model_3d": "lgs4056hep-etched.glb",
      "model_3d_plain": "lgs4056hep.glb",
      "model_3d_step": "lgs4056hep-etched.step",
      "model_3d_step_plain": "lgs4056hep.step",
      "lbr": "lgs4056hep.lbr"
    },
    "distributor_links": {
      "lcsc": "C5123970"
    },
    "pins": [
      {
        "number": "1",
        "name": "TEMP",
        "type": "input",
        "description": "Battery temperature detection input; charging pauses if voltage is below 45% VCC (over-temperature) or above 80% VCC (under-temperature); ground to disable monitoring."
      },
      {
        "number": "2",
        "name": "PROG",
        "type": "input",
        "description": "Charging current programming input; set charging current with external 1% precision resistor to ground where I_BAT = 1000/R_PROG above 300mA or I_BAT = 900/R_PROG below 300mA."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply input rated 5V nominal; requires minimum 10µF ceramic bypass capacitor to GND; withstands surge voltage up to 28V with internal 24V MOSFET."
      },
      {
        "number": "5",
        "name": "BAT",
        "type": "power_out",
        "description": "Battery charging output with maximum programmable charging current to 1A; requires minimum 10µF capacitor to ground."
      },
      {
        "number": "6",
        "name": "DONE",
        "type": "tri_state",
        "description": "Charging complete indicator; open-drain output pulls low when battery reaches full charge voltage of 4.2V."
      },
      {
        "number": "7",
        "name": "CHRG",
        "type": "tri_state",
        "description": "Charging in progress indicator; open-drain output pulls low during constant current and constant voltage charging phases."
      },
      {
        "number": "8",
        "name": "CE",
        "type": "input",
        "description": "Charging enable control input; high level enables charging, low level disables charging and reduces quiescent current to ≤40µA."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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": [
          "exposed pad 9 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 16,
        "cost_usd": 0.2426,
        "at": "2026-09-18T05:08:48"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756398710047678464",
        "pages": 16,
        "sha256": "ca42b5598b7bb228",
        "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": "lgs4056hep.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": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lgs4056hep-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "cb5ad17a33fc36f6c6332690cbc6d3aa0e81bedfee428b330ad530bfd3ce4b72",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}