EA4021

{
  "schema_version": 1,
  "type": "component",
  "slug": "ea4021",
  "title": "EA4021",
  "brief": "Everanalog IC design Battery Management, DFN-8(2x2). 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)",
    "ea4021",
    "factory-2.0.0",
    "extractor-text"
  ],
  "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": [
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d2dd72623456370941675ec7b1ddfbb90be72e0aee1f148a6f12c54dfc06c4bb",
        "checked": "2026-10-18",
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        "centre_offset_mm": 0,
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        "sha256": "43d20294afbd147981910529e0619daad41341b051ef33af33a059a426567c1c",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Everanalog IC design",
      "Package": "DFN-8(2x2)",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "497c4ac32ae9b06c11ec63a2b583af93081d6d63fc19e9031506aaafb65c26c9",
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          "kind": "absolute_maximum",
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          "min": -0.3,
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          "max": 28,
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          "name": "BAT pin voltage range",
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          "name": "PROG pin voltage range",
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          "min": -0.3,
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        },
        {
          "name": "All other pins voltage range",
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        },
        {
          "name": "BAT pin output current",
          "symbol": "IBAT",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
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          "conditions": "Depends on package thermal capability (note 2)",
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        {
          "name": "Ambient temperature operating range",
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          "unit": "°C",
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        },
        {
          "name": "Junction temperature",
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          "unit": "°C",
          "min": null,
          "typ": null,
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        },
        {
          "name": "Soldering temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10 sec",
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        {
          "name": "Storage temperature",
          "symbol": "TS",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "Input voltage",
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          "name": "Input voltage",
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        {
          "name": "Input current, charge mode",
          "symbol": "ICC",
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          "max": 600,
          "conditions": "Charge mode, RPROG=10K",
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        {
          "name": "Input current, standby mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 75,
          "conditions": "Standby mode",
          "source_page": 4,
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        {
          "name": "Input current, shut down mode",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 75,
          "conditions": "Shut Down Mode: RPROG open, VCE=0, VIN<VBAT, or VIN<VUV",
          "source_page": 4,
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        },
        {
          "name": "Float voltage EA4021x-42",
          "symbol": "VFLOAT",
          "kind": "electrical",
          "unit": "V",
          "min": 4.158,
          "typ": 4.2,
          "max": 4.242,
          "conditions": "0°C≤TA≤85°C",
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        {
          "name": "Float voltage EA4021x-43",
          "symbol": "VFLOAT",
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          "min": 4.31,
          "typ": 4.35,
          "max": 4.39,
          "conditions": "0°C≤TA≤85°C",
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        {
          "name": "Output current, constant current mode RPROG=10K",
          "symbol": "IBAT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 90,
          "max": null,
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        {
          "name": "Output current, constant current mode RPROG=2K",
          "symbol": "IBAT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 450,
          "max": null,
          "conditions": "RPROG=2K, constant current charge mode",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output current, standby mode",
          "symbol": "IBAT",
          "kind": "electrical",
          "unit": "μA",
          "min": 1,
          "typ": null,
          "max": 5,
          "conditions": "Standby mode, VBAT=VFLOAT",
          "source_page": 4,
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        },
        {
          "name": "Output current, shutdown mode",
          "symbol": "IBAT",
          "kind": "electrical",
          "unit": "μA",
          "min": 0.5,
          "typ": null,
          "max": 5,
          "conditions": "Shutdown mode (RPROG not connected), VCE=0",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Trickle charge current",
          "symbol": "ITRIKL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 45,
          "max": null,
          "conditions": "VBAT < VTRIKL, RPROG=2K",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Trickle charge cutoff threshold",
          "symbol": "VTRIKL",
          "kind": "electrical",
          "unit": "V",
          "min": 2.7,
          "typ": 2.9,
          "max": 3,
          "conditions": "VBAT rising, EA4021x-42/43",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Undervoltage lockout threshold",
          "symbol": "VUV",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3.8,
          "max": null,
          "conditions": "VIN from low to high",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Undervoltage hysteresis",
          "symbol": "VUVHYS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Overvoltage lockout threshold",
          "symbol": "VOV",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 7,
          "max": null,
          "conditions": "VIN from low to high",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Overvoltage hysteresis",
          "symbol": "VOVHYS",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 400,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VIN-VBAT lockout threshold, rising",
          "symbol": "VASD",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "VIN from low to high",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VIN-VBAT lockout threshold, falling",
          "symbol": "VASD",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "VIN from high to low",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "1/10 C termination current threshold RPROG=10K",
          "symbol": "ITERM",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 9,
          "max": null,
          "conditions": "RPROG=10K",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "1/10 C termination current threshold RPROG=2K",
          "symbol": "ITERM",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 45,
          "max": null,
          "conditions": "RPROG=2K",
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          "source": "datasheet"
        },
        {
          "name": "PROG voltage",
          "symbol": "VPROG",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": 1,
          "max": 1.1,
          "conditions": "RPROG=10K, constant current charge mode",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "CHRG and STDBY leakage current",
          "symbol": "ICHRG",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "CE=0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "CHRG and STDBY pin voltage to GND",
          "symbol": "VCHRG",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.1,
          "max": 0.6,
          "conditions": "ICHRG=5mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Recharge threshold",
          "symbol": "VRECHRG",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 4.05,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Temperature protection threshold (low side, printed as high-temp)",
          "symbol": "VTEMPH",
          "kind": "electrical",
          "unit": "%VIN",
          "min": 45,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Temperature protection threshold (high side, printed as low-temp)",
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          "kind": "electrical",
          "unit": "%VIN",
          "min": null,
          "typ": null,
          "max": 80,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal regulation temperature",
          "symbol": "TREG",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "Thermal Regulation",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Overtemperature protection temperature",
          "symbol": "TLIM",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": 160,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "MOS equivalent on-resistance",
          "symbol": "RDSON",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 600,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Soft-start time",
          "symbol": "TSS",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "IBAT =0 to IBAT =100V/ RPROG (as printed)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Recharge delay",
          "symbol": "TRECHARGE",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "VBAT High to Low",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Charge termination delay",
          "symbol": "TTERM",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "IBAT falling below ICHG 1/10",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Bad cell protection time",
          "symbol": "TBAD_CELL",
          "kind": "timing",
          "unit": "min",
          "min": null,
          "typ": 45,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "PROG input current",
          "symbol": "IPROG",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance, DFN 2x2-8",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 110,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation, DFN 2x2-8",
          "symbol": "PDmax",
          "kind": "thermal",
          "unit": "W",
          "min": null,
          "typ": 1.14,
          "max": null,
          "conditions": "TA=25°C",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
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    "name": "Ray",
    "email": "[email protected]"
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