EA4021

{
  "slug": "ea4021",
  "version": "0.1.0",
  "type": "component",
  "description": "Everanalog IC design Battery Management, DFN-8(2x2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "ea4021",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ea4021.kicad_sym",
    "ea4021.kicad_mod",
    "ea4021.glb",
    "ea4021.step",
    "ea4021.lbr",
    "docs/hero.png",
    "docs/ea4021-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ea4021-hero.glb",
    "ea4021-hero.overlay.json",
    "ea4021-etched.glb"
  ],
  "component": {
    "mpn": "EA4021",
    "manufacturer": "Everanalog IC design",
    "package": "DFN-8(2x2)",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838883640020992",
    "parts": {
      "symbol": "ea4021.kicad_sym",
      "footprint": "ea4021.kicad_mod",
      "model_3d": "ea4021-hero.glb",
      "model_3d_plain": "ea4021-etched.glb",
      "model_3d_step": "ea4021-etched.step",
      "model_3d_step_plain": "ea4021.step",
      "lbr": "ea4021.lbr"
    },
    "distributor_links": {
      "lcsc": "C5120297"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T09:05:06Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "TEMP",
        "type": "input",
        "description": "Battery temperature sense input for the pack NTC; charging stops if the TEMP voltage is below 45% or above 80% of VIN, and the function is disabled when TEMP is tied to GND or left floating."
      },
      {
        "number": "2",
        "name": "PROG",
        "type": "passive",
        "description": "Charge current program pin, set by a resistor to ground (1% resistor recommended, e.g. 10K gives 90 mA, 2K gives 450 mA, 1K gives 900 mA); floating PROG puts the charger in shutdown."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input; recommended 4.5V to 6.5V, absolute maximum 28V, overvoltage threshold 7V."
      },
      {
        "number": "5",
        "name": "BAT",
        "type": "power_out",
        "description": "Charge output pin, connected to the battery positive terminal."
      },
      {
        "number": "6",
        "name": "STDBY",
        "type": "output",
        "description": "Open-drain standby status indicator that pulls low when charging is complete."
      },
      {
        "number": "7",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain charge status indicator that pulls low while charging is in progress."
      },
      {
        "number": "8",
        "name": "CE",
        "type": "input",
        "description": "Charge enable input; high enables charging and low shuts charging off."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The ordering table lists DFN 2x2-8 as EA4021XXDBR, so the DFN 2x2-8 pinout was used. The MPN EA4021 ; PROG is typed passive because it connects to a program resistor. STDBY and CHRG are open-drain outpu",
          "dropped thermal pad ['EP'] absent from footprint",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 13,
        "cost_usd": 0.2091,
        "at": "2026-10-18T09:04:06"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838883640020992",
        "pages": 13,
        "sha256": "497c4ac32ae9b06c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ea4021.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.0,
          1.98,
          0.92
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d2dd72623456370941675ec7b1ddfbb90be72e0aee1f148a6f12c54dfc06c4bb",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ea4021-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.0,
          1.98,
          0.92
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "43d20294afbd147981910529e0619daad41341b051ef33af33a059a426567c1c",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}