ETA9742E8A

{
  "schema_version": 1,
  "type": "component",
  "slug": "eta9742e8a",
  "title": "ETA9742E8A",
  "brief": "etasolution Battery Management, ESOP8. 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)",
    "eta9742e8a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ETA9742E8A",
    "manufacturer": "etasolution",
    "package": "ESOP8",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590905353741946880",
    "parts": {
      "symbol": "eta9742e8a.kicad_sym",
      "footprint": "eta9742e8a.kicad_mod",
      "model_3d": "eta9742e8a-hero.glb",
      "model_3d_plain": "eta9742e8a.glb",
      "model_3d_step": "eta9742e8a-etched.step",
      "model_3d_step_plain": "eta9742e8a.step",
      "lbr": "eta9742e8a.lbr"
    },
    "distributor_links": {
      "lcsc": "C7465514"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T20:16:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "bidirectional",
        "description": "Inductor connection: connect an inductor between SW and the regulator output."
      },
      {
        "number": "2",
        "name": "LED",
        "type": "output",
        "description": "Battery level indication LED connection pin."
      },
      {
        "number": "3",
        "name": "STAT",
        "type": "output",
        "description": "Charge status indication: STAT is pulled low while charging and is high impedance when charge is completed."
      },
      {
        "number": "4",
        "name": "BST",
        "type": "output",
        "description": "Boost status indication: BST is pulled low in boost, pulled high when charging, and high impedance when entering no-load condition."
      },
      {
        "number": "5",
        "name": "ISET",
        "type": "passive",
        "description": "Buck charging current setting pin: connect a resistor between this pin and analog ground to set the current level (Riset=56K gives 3A fast charge; Riset=91K gives 2A)."
      },
      {
        "number": "6",
        "name": "BAT",
        "type": "bidirectional",
        "description": "Battery pin: connect the battery to this pin, with a 10uF bypass capacitor."
      },
      {
        "number": "7",
        "name": "OUT",
        "type": "bidirectional",
        "description": "Output pin: bypass with a 22uF or larger ceramic capacitor placed closely between this pin and GND."
      },
      {
        "number": "8",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground pin."
      },
      {
        "number": "9",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground pin on the exposed pad; the datasheet says to connect the heat sink through vias to the GND plane on the backside."
      }
    ],
    "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 lists the exposed pad as '9 /' in the pin table, with no separate pin number. It is re; The datasheet does not state a KiCad ERC type for each pin. Types were inferred from the pin functio; The datasheet gives no pin-number drawing or pin map image in the extracted text, so the pin order 1"
        ],
        "pages_sent": 5,
        "cost_usd": 0.0332,
        "at": "2026-10-09T20:14:17"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590905353741946880",
        "pages": 5,
        "sha256": "9311e782af8c1e36",
        "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": "eta9742e8a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2d6f7e774e8143e3320cbd59eb5be9f3b7864614644e3b072006e1eb05fb7fa6",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "eta9742e8a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "97f7328a125d87428e2aca32e978163de7567d2a4fcbfc4bf60a8bfca78b1061",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "etasolution",
      "Package": "ESOP8",
      "Category": "Power Management (PMIC)",
      "Pins": "9"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "eta9742e8a"
  ],
  "discovery_pitch": "ETA9742E8A (etasolution) 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",
    "eta9742e8a.kicad_sym",
    "eta9742e8a.kicad_mod",
    "eta9742e8a.glb",
    "eta9742e8a.step",
    "eta9742e8a.lbr",
    "docs/hero.png",
    "docs/eta9742e8a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "eta9742e8a-hero.glb",
    "eta9742e8a-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}