R5478N102CD-TR-FF

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  "slug": "r5478n102cd-tr-ff",
  "title": "R5478N102CD-TR-FF",
  "brief": "Ricoh Elec Devices Battery Management, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "R5478N102CD-TR-FF",
    "manufacturer": "Ricoh Elec Devices",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "Battery Management",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a281fbbcee27a092eeb43d3c56258690.pdf",
    "parts": {
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    "pins": [
      {
        "number": "1",
        "name": "DOUT",
        "type": "output",
        "description": "Discharge control output. CMOS output that switches low after the internally fixed delay when over-discharge or excess discharge-current is detected; drives the gate of the discharge-side external MOSFET."
      },
      {
        "number": "2",
        "name": "V-",
        "type": "input",
        "description": "Charger negative input. Senses the negative terminal of the charger / load; used by the excess discharge-current and short-circuit detectors and for the output-delay-shortening function when pulled to VSS-2 V."
      },
      {
        "number": "3",
        "name": "COUT",
        "type": "output",
        "description": "Charge control output. CMOS output that switches low after the internally fixed 1 s delay when over-charge is detected; drives the gate of the charge-side external MOSFET."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection. Leave floating or tie to a convenient net; not internally bonded."
      },
      {
        "number": "5",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply pin and substrate voltage reference for the IC. Absolute maximum supply voltage is -0.3 V to 12 V (process tolerates up to 30 V transient); typically connected to the battery positive terminal through a series resistor."
      },
      {
        "number": "6",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the IC. All voltages in the datasheet are referred to VSS = 0 V."
      }
    ],
    "provenance": {
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      "datasheet": {
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        "pages": 27,
        "sha256": "e02e7c3c39eec61e",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
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        "centre_offset_mm": 0.0,
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        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Ricoh Elec Devices",
      "Package": "SOT-23-6",
      "Category": "PMIC",
      "Pins": "6"
    }
  },
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  "discovery_pitch": "R5478N102CD-TR-FF (Ricoh Elec Devices) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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  "variants": [
    {
      "mpn": "R5478N102CD-TR-FF",
      "kind": "packaging"
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      "mpn": "R5475N",
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  "updated_at": "2026-09-25T04:41:22.667Z"
}