SK4554D8-435

{
  "slug": "sk4554d8-435",
  "version": "0.1.0",
  "type": "component",
  "description": "Suntek Battery Management ICs, DFN-8(2x2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "power supply chip",
    "sk4554d8-435",
    "factory-2.0.0",
    "extractor-text"
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  "dependencies": {},
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    "sk4554d8-435.step",
    "sk4554d8-435.lbr",
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    "docs/sk4554d8-435-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
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    "sk4554d8-435-hero.overlay.json",
    "sk4554d8-435-etched.glb"
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  "component": {
    "mpn": "SK4554D8-435",
    "manufacturer": "Suntek",
    "package": "DFN-8(2x2)",
    "pin_count": 8,
    "category": "Power Supply Chip",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c5f40f9530e215cd0e4f8dc5dc4ecfcd.pdf",
    "parts": {
      "symbol": "sk4554d8-435.kicad_sym",
      "footprint": "sk4554d8-435.kicad_mod",
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      "model_3d_step": "sk4554d8-435-etched.step",
      "model_3d_step_plain": "sk4554d8-435.step",
      "lbr": "sk4554d8-435.lbr"
    },
    "distributor_links": {
      "lcsc": "C5120310"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T20:08:06Z",
      "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 (absolute maximum -0.3 to 27V, operating 4.55 to 6.10V, charging disabled above the ~6.8V OVP threshold) that wants a 1µF or larger X5R ceramic decoupling capacitor close to the pin."
      },
      {
        "number": "2",
        "name": "PPR",
        "type": "output",
        "description": "Open-drain power-presence indication, active low when VIN is above POR and below OVP, sinks 15mA (MIN) to drive an LED, maximum pin voltage 5.5V, independent of the EN input."
      },
      {
        "number": "3",
        "name": "CHG",
        "type": "output",
        "description": "Open-drain charge indication that goes low when a charge cycle starts and high impedance when full-of-charge is qualified or the charger is disabled, sinks 15mA (MIN) to drive an LED."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Enable input, drive high to disable the charger, low or floating enables it, with an internal 200kΩ pull-down resistor."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "System ground."
      },
      {
        "number": "6",
        "name": "IMIN",
        "type": "passive",
        "description": "Full-of-charge current programming pin, a resistor RIMIN to GND sets IMIN = 9700/RIMIN + 4 (mA) with RIMIN in kΩ, programmable range 5mA to 120mA."
      },
      {
        "number": "7",
        "name": "IREF",
        "type": "passive",
        "description": "Charge-current programming and monitoring pin, a resistor RIREF to GND sets IREF = 12000/RIREF (mA) with RIREF in kΩ, and its voltage monitors the actual charge current (VIREF = 0V when disabled)."
      },
      {
        "number": "8",
        "name": "BAT",
        "type": "power_out",
        "description": "Charger output pin connected to the battery, with a 1µF or larger X5R ceramic capacitor recommended, output disabled when EN is high."
      }
    ],
    "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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The DFN-2x2-8L top-view diagram text on page 1 is garbled, with 9 labels including a second GND that; The datasheet mentions an exposed thermal pad on the DFN package (page 13) and the page 1 diagram se"
        ],
        "pages_sent": 15,
        "cost_usd": 0.126,
        "at": "2026-10-22T20:07:15"
      },
      "datasheet": {
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        "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
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    },
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        "checked": "2026-10-22",
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        "zmin_mm": 0.0,
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        "sha256": "f746ab71b58cfba9fe322fd5bae9bdb3a255e169494538b36a9f7ea060cf420d",
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}