SM5308

{
  "slug": "sm5308",
  "version": "0.1.0",
  "type": "component",
  "description": "HICHON Battery Management ICs, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "sm5308",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sm5308.kicad_sym",
    "sm5308.kicad_mod",
    "sm5308.glb",
    "sm5308.step",
    "sm5308.lbr",
    "docs/hero.png",
    "docs/sm5308-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sm5308-hero.glb",
    "sm5308-hero.overlay.json",
    "sm5308-etched.glb"
  ],
  "component": {
    "mpn": "SM5308",
    "manufacturer": "HICHON",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "Power Supply Chip",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b45c86f1401d0cb4881d0113f1a22489.pdf",
    "parts": {
      "symbol": "sm5308.kicad_sym",
      "footprint": "sm5308.kicad_mod",
      "model_3d": "sm5308-hero.glb",
      "model_3d_plain": "sm5308-etched.glb",
      "model_3d_step": "sm5308-etched.step",
      "model_3d_step_plain": "sm5308.step",
      "lbr": "sm5308.lbr"
    },
    "distributor_links": {
      "lcsc": "C5345582"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T05:40:37Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "DC 5V charging input pin; the datasheet gives an input voltage range of 4.65 V to 5.5 V (absolute maximum -0.3 V to 6 V)."
      },
      {
        "number": "2",
        "name": "LED1",
        "type": "output",
        "description": "LED display driver pin for the battery-level indicator, with a stated LED display drive current of 6 mA per LED output (IL1/IL2/IL3)."
      },
      {
        "number": "3",
        "name": "LED2",
        "type": "output",
        "description": "LED display driver pin for the battery-level indicator, with a stated LED display drive current of 6 mA per LED output (IL1/IL2/IL3); in MCU status-read mode it outputs a square wave whose frequency encodes the IC state."
      },
      {
        "number": "4",
        "name": "LED3",
        "type": "output",
        "description": "LED display driver pin for the battery-level indicator, with a stated LED display drive current of 6 mA per LED output (IL1/IL2/IL3)."
      },
      {
        "number": "5",
        "name": "KEY",
        "type": "bidirectional",
        "description": "Key input pin multiplexed with the lighting LED drive, with a stated lighting LED drive current of 17 mA; leave it floating when no key is used."
      },
      {
        "number": "6",
        "name": "BAT",
        "type": "power_in",
        "description": "Boost input pin connected to the positive terminal of the lithium battery, with a stated battery operating voltage of 3.0 V to 4.4 V."
      },
      {
        "number": "7",
        "name": "SW",
        "type": "output",
        "description": "DC-DC switching pin that must connect to the inductor through R10 and C8 placed close to the pin, per the PCB layout notes."
      },
      {
        "number": "8",
        "name": "VOUT",
        "type": "power_out",
        "description": "5 V boost output pin with a stated DC output voltage of 5.0 V and a boost output current capability of up to 2.4 A."
      },
      {
        "number": "9",
        "name": "Power PAD",
        "type": "power_in",
        "description": "Exposed thermal pad connected to ground (GND) that must make good contact with the PCB ground for heat dissipation."
      }
    ],
    "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: Pin 9 is the exposed pad (Power PAD / EPAD), printed as 9 in the datasheet pin table, not a leaded p; KEY is described as key input multiplexed with lighting LED drive, and no KiCad class is stated; bid; Pin types are inferred from their functions (charger input, battery input, boost output) rather than"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0359,
        "at": "2026-10-21T05:37:55"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/b45c86f1401d0cb4881d0113f1a22489.pdf",
        "pages": 11,
        "sha256": "55afbb1178ff403f",
        "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": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sm5308-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e737ee360e18694a226d841c581bff23f5572b98a4ecd36bb7722952c838f496",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}