SK4554D8-42

{
  "slug": "sk4554d8-42",
  "version": "0.1.0",
  "type": "component",
  "description": "Suntek Battery Management, DFN-8(2x2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "sk4554d8-42",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sk4554d8-42.kicad_sym",
    "sk4554d8-42.kicad_mod",
    "sk4554d8-42.glb",
    "sk4554d8-42.step",
    "sk4554d8-42.lbr",
    "docs/hero.png",
    "docs/sk4554d8-42-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sk4554d8-42-hero.glb",
    "sk4554d8-42-hero.overlay.json",
    "sk4554d8-42-etched.glb"
  ],
  "component": {
    "mpn": "SK4554D8-42",
    "manufacturer": "Suntek",
    "package": "DFN-8(2x2)",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590268507922735104",
    "parts": {
      "symbol": "sk4554d8-42.kicad_sym",
      "footprint": "sk4554d8-42.kicad_mod",
      "model_3d": "sk4554d8-42-hero.glb",
      "model_3d_plain": "sk4554d8-42-etched.glb",
      "model_3d_step": "sk4554d8-42-etched.step",
      "model_3d_step_plain": "sk4554d8-42.step",
      "lbr": "sk4554d8-42.lbr"
    },
    "distributor_links": {
      "lcsc": "C5120309"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T16:59:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input accepting up to 24V (absolute maximum 27V) with a recommended 4.55V to 6.10V operating supply; charging stops when the input exceeds the typical 6.8V OVP threshold, and a 1µF or larger X5R ceramic capacitor is recommended close to the pin."
      },
      {
        "number": "2",
        "name": "PPR",
        "type": "output",
        "description": "Open-drain power-presence indication that turns on when VIN is above the POR threshold and below the OVP threshold, sinking at least 15mA with a maximum pin voltage rating of 5.5V, and is independent of the EN pin."
      },
      {
        "number": "3",
        "name": "CHG",
        "type": "output",
        "description": "Open-drain charge indication that goes low when a charge cycle starts, turns high impedance at full-of-charge, sinks at least 15mA, and is high impedance when the charger is disabled."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Active-low enable input where driving high disables the charger and low or floating enables it, with a 200kΩ internal pull-down resistor and logic thresholds of 1.5V (high) and 0.8V (low)."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "System ground."
      },
      {
        "number": "6",
        "name": "IMIN",
        "type": "passive",
        "description": "Full-of-charge current programming pin where a resistor to GND sets IMIN = 9700/RIMIN + 4 mA (RIMIN in kΩ), with a programmable range of 5mA to 120mA and stability not guaranteed below 5mA."
      },
      {
        "number": "7",
        "name": "IREF",
        "type": "passive",
        "description": "Charge-current programming and monitoring pin where a resistor to GND, placed very close to the pin, sets IREF = 12000/RIREF mA (RIREF in kΩ), and its voltage tracks the actual charge current through all charge phases."
      },
      {
        "number": "8",
        "name": "BAT",
        "type": "power_out",
        "description": "Charger output connected to the battery, requiring a 1µF or larger X5R ceramic capacitor for decoupling and stability, and disabled when EN is driven high."
      }
    ],
    "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 DFN-2x2-8L package has an exposed thermal pad on the bottom side (datasheet page 13), but the da; The page 1 top-view text extraction is scrambled; pin numbers and names were taken from the explicit"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0745,
        "at": "2026-10-18T16:57:45"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590268507922735104",
        "pages": 15,
        "sha256": "968d77dee9d54351",
        "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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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          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": "sk4554d8-42-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": "393088f1392b0a41c088c35e6dcb8f70644f9fc80f2fe4db19769cac7903eab9",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  }
}