main
Ray Set visibility: public f2e5f99 3d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "sy8120b",
  "title": "SY8120B",
  "brief": "Slkor(SLKORMICRO Elec.) DC-DC Converters, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power supply chip",
    "sy8120b",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SY8120B",
    "manufacturer": "Slkor(SLKORMICRO Elec.)",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6686c2277f5996ed54b07104415dd8c9.pdf",
    "parts": {
      "symbol": "sy8120b.kicad_sym",
      "footprint": "sy8120b.kicad_mod",
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      "model_3d_plain": "sy8120b-etched.glb",
      "model_3d_step": "sy8120b-etched.step",
      "model_3d_step_plain": "sy8120b.step",
      "lbr": "sy8120b.lbr"
    },
    "distributor_links": {
      "lcsc": "C5330397",
      "digikey": "5399-SY8120BTR-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T03:05:30Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "5399-SY8120BTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BS",
        "type": "passive",
        "description": "Boot-strap pin supplying the high-side gate driver; decouple to the LX pin with a 0.01uF ceramic capacitor."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Output feedback pin; connect to the center of the output resistor divider to set Vout=0.6*(1+R1/R2), with 0.6V reference."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Enable pin; high input (min 1.5V) enables the device, low input (max 0.4V) disables it, do not float."
      },
      {
        "number": "5",
        "name": "IN",
        "type": "power_in",
        "description": "Input supply pin, operating range 4V to 18V (recommended 4 to 16V), with a bypass ceramic capacitor placed very close."
      },
      {
        "number": "6",
        "name": "LX",
        "type": "output",
        "description": "Inductor pin; connect to the switching node of the inductor."
      }
    ],
    "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: Datasheet text mentions a pin assignment diagram but only the table was extracted; pin numbers are t"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0364,
        "at": "2026-10-23T03:05:07"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/6686c2277f5996ed54b07104415dd8c9.pdf",
        "pages": 6,
        "sha256": "8529096e76969e28",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sy8120b.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sy8120b-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,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "0f1eaaef3fcb786d7ab5619d41d68d74942329cb06efcad1a3b1879b8f0490b2",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Slkor(SLKORMICRO Elec.)",
      "Package": "SOT-23-6",
      "Category": "Power Supply Chip",
      "Pins": "6"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "8529096e76969e28deb97ea341a5f7e597da4ddb272ad9770fcd47b1b2e86723",
      "rows": [
        {
          "name": "FB Pin Voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "mV",
          "min": 588,
          "typ": 600,
          "max": 612,
          "conditions": "VIN=VEN=3.6V, TA=25C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": null,
          "max": 16,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Current (Shutdown)",
          "symbol": "Ioff",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": 5,
          "conditions": "EN=0V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "Iqc",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Iout=0, Vfb=VREF+5%",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Switching Frequency",
          "symbol": "Fsw",
          "kind": "electrical",
          "unit": "KHz",
          "min": null,
          "typ": 600,
          "max": null,
          "conditions": "Iout=200mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Duty Cycle",
          "symbol": "Dmax",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 90,
          "max": null,
          "conditions": "VFB=0V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "EN Minimum High Level",
          "symbol": "VEN_H",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "EN Maximum Low Level",
          "symbol": "VEN_L",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.4,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input UVLO threshold",
          "symbol": "Vuvlo",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3.9,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "SW On Resistance (TOP FET)",
          "symbol": "RON(1)",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.11,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "SW On Resistance (Bottom FET)",
          "symbol": "RON(2)",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.09,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "TOP FET Current Limit",
          "symbol": "T-CL",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 2.5,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage (abs max)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 4,
          "typ": null,
          "max": 18,
          "conditions": "printed as 4~18.0 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Voltage at SW Pin",
          "symbol": "VSW",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation",
          "symbol": "PDMAX",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Package Lead Soldering Temperature",
          "symbol": "Tsolder",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10s",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "ESD Susceptibility HBM",
          "symbol": "HBM",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "human body mode",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "ESD Machine Mode",
          "symbol": "MM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "VIN Supply Voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4,
          "typ": null,
          "max": 16,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature",
          "symbol": "TOSS",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance SOT-23-6",
          "symbol": "ΘJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 220,
          "max": null,
          "conditions": "SOT-23-6",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sy8120b"
  ],
  "discovery_pitch": "SY8120B (Slkor(SLKORMICRO Elec.)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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    "sy8120b-hero.overlay.json",
    "sy8120b-etched.glb"
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  "visibility": {
    "public": true
  }
}