SY8205FCC

{
  "schema_version": 1,
  "type": "component",
  "slug": "sy8205fcc",
  "title": "SY8205FCC",
  "brief": "Silergy Corp DC-DC Converters, SOIC-8-EP. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "sy8205fcc"
  ],
  "component": {
    "mpn": "SY8205FCC",
    "manufacturer": "Silergy Corp",
    "package": "SOIC-8-EP",
    "pin_count": 9,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b1e54c7ba6b44ef7a88a9b9be69aa1c1.pdf",
    "parts": {
      "symbol": "sy8205fcc.kicad_sym",
      "footprint": "sy8205fcc.kicad_mod",
      "model_3d": "sy8205fcc-etched.glb",
      "model_3d_plain": "sy8205fcc.glb",
      "model_3d_step": "sy8205fcc-etched.step",
      "model_3d_step_plain": "sy8205fcc.step",
      "lbr": "sy8205fcc.lbr"
    },
    "distributor_links": {
      "lcsc": "C111875"
    },
    "pins": [
      {
        "number": "1",
        "name": "BS",
        "type": "passive",
        "description": "Boot-Strap pin. Supply for the high-side gate driver. Decouple to LX with a 0.1 µF ceramic capacitor."
      },
      {
        "number": "2",
        "name": "LX",
        "type": "power_out",
        "description": "Switching node. Connect to the inductor of the buck converter output stage."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable control input. Accurate 1.2 V rising threshold; add an RC network to the EN pin to program turn-on delay."
      },
      {
        "number": "4",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start programming pin. Connect a capacitor from this pin to GND to program soft-start time: Tss = Css × 0.6 V / 10 µA."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Output feedback pin. Connect to the center tap of an external divider to program Vout = 0.6 V × (1 + R1/R2). Reference is 0.6 V typ."
      },
      {
        "number": "6",
        "name": "VCC",
        "type": "power_out",
        "description": "Internal 3.3 V LDO output. Powers internal analog and driving circuitry. Add a 1 µF bypass capacitor to GND."
      },
      {
        "number": "7",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input (PVIN, tied with pin 8). 4.5 V-30 V input range. Decouple to GND with at least a 10 µF ceramic capacitor."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input (PVIN, tied with pin 7). 4.5 V-30 V input range. Decouple to GND with at least a 10 µF ceramic capacitor."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed thermal paddle. Ground return. Solder to the PCB ground plane for electrical connection and thermal dissipation (θJC ≈ 10 °C/W).",
        "source": "renumbered-to-footprint-pad"
      }
    ],
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        "pages": 11,
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        "source_tier": "mfr"
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      "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"
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    "pin1": {
      "pad": "1",
      "at": [
        -2.6375,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.514x3.2mm@sha256:27b709759cdf6810",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "sy8205fcc.step",
        "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,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2840567496ddf0fc848c15422c69110d33e99652ac65ecb6103f454ef58f185b",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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        "role": "eda",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "df0efc89b6526afe47015c8378c8e750180c277e5bc901c1c8f5584e4346db4d",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Silergy Corp",
      "Package": "SOIC-8-EP",
      "Category": "PMIC",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "850d2e5ca1513d6d",
      "rows": [
        {
          "name": "Input Voltage Range",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "IOUT=0, VFB=VREF*105%",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Current",
          "symbol": "ISHDN",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 5,
          "max": 10,
          "conditions": "EN=0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Feedback Reference Voltage",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 0.591,
          "typ": 0.6,
          "max": 0.609,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "FB Input Current",
          "symbol": "IFB",
          "kind": "electrical",
          "unit": "nA",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "VFB=VCC",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Top FET RON",
          "symbol": "Rds(on)1",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": null,
          "max": 70,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Bottom FET RON",
          "symbol": "Rds(on)2",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Bottom FET Current Limit",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN falling threshold",
          "symbol": "VENL",
          "kind": "electrical",
          "unit": "V",
          "min": 1.1,
          "typ": 1.2,
          "max": 1.3,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN threshold hysteresis",
          "symbol": "VEN,HYS",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input UVLO threshold",
          "symbol": "VUVLO",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "UVLO hysteresis",
          "symbol": "VHYS",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Frequency",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "kHz",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "IOUT=200mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Min ON Time",
          "symbol": "",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 80,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Min OFF Time",
          "symbol": "",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Internal LDO Output",
          "symbol": "VVCC",
          "kind": "electrical",
          "unit": "V",
          "min": 3.2,
          "typ": 3.3,
          "max": 3.4,
          "conditions": "VIN=4V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown Temperature",
          "symbol": "TSD",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 160,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown Hysteresis",
          "symbol": "TSD,HYS",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "PVIN, SVIN, LX, BS, EN, PG voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 33,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VCC, FB, SS, BS-LX voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation SO8E",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 3.3,
          "conditions": "TA = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-to-Ambient SO8E",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-to-Case SO8E",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature Range (absolute maximum)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (soldering)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10 sec.",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply Input Voltage (recommended)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature Range (recommended)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Ambient Temperature Range (recommended)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "sections": [
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    "breadcrumbs",
    "info"
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  "discovery_triggers": [
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  "discovery_pitch": "SY8205FCC (Silergy Corp) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
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  "description": "Silergy Corp DC-DC Converters, SOIC-8-EP. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "visibility": "public",
  "variants": [
    {
      "mpn": "SY8205FCC",
      "kind": "packaging"
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    {
      "mpn": "SY8205FCCDNC",
      "kind": "packaging"
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  "updated_at": "2026-09-25T09:15:01.276Z"
}