main
Ray Set visibility: public bf72f1f 1d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "sct2a27ster",
  "title": "SCT2A27STER",
  "brief": "SCT DC-DC Converters, ESOP-8. 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 management (pmic)",
    "sct2a27ster",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SCT2A27STER",
    "manufacturer": "SCT",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602834757667737600",
    "parts": {
      "symbol": "sct2a27ster.kicad_sym",
      "footprint": "sct2a27ster.kicad_mod",
      "model_3d": "sct2a27ster-hero.glb",
      "model_3d_plain": "sct2a27ster-etched.glb",
      "model_3d_step": "sct2a27ster-etched.step",
      "model_3d_step_plain": "sct2a27ster.step",
      "lbr": "sct2a27ster.lbr"
    },
    "distributor_links": {
      "lcsc": "C5367631"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T14:31:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Inverting input of the comparator; the external feedback divider from VOUT to GND sets the output voltage, and the device regulates FB to the 1.2V typical internal reference (1.188V to 1.212V)."
      },
      {
        "number": "2",
        "name": "EN",
        "type": "input",
        "description": "Enable pin with an internal pull-up current source; pull it below 1.23V to disable the converter, and float it to enable the converter."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage, specified from 5.5V to 100V; connect a local bypass capacitor from VIN to GND with the path kept as short as possible."
      },
      {
        "number": "4",
        "name": "BST",
        "type": "power_out",
        "description": "Bootstrap supply for the high-side power MOSFET gate driver; connect a 0.1uF capacitor from BST to SW, which is charged while the low-side MOSFET is on or SW is low."
      },
      {
        "number": "5",
        "name": "SW",
        "type": "output",
        "description": "Regulator switching output; connect to the external power inductor, with the catch diode from SW to GND."
      },
      {
        "number": "6",
        "name": "VBIAS",
        "type": "power_in",
        "description": "Supply input for the LDO with internal VBIAS UVLO (rising 3V, falling 2.7V); connect to VOUT for low-power operation, and quiescent current drops when VBIAS is above 6V."
      },
      {
        "number": "7",
        "name": "LDO",
        "type": "power_out",
        "description": "Output of the integrated 200mA LDO, which requires at least a 1uF ceramic capacitor."
      },
      {
        "number": "8",
        "name": "EN_LDO",
        "type": "input",
        "description": "LDO enable and output-voltage select: below 0.8V disables the LDO, 1.2V to 1.8V sets 3.3V, and above 2.2V or floating sets 5V."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; must be connected to the PCB ground plane for proper operation and thermal performance (this is the exposed thermal pad of the ESOP-8 package)."
      }
    ],
    "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: The package is an 8-lead ESOP, but the datasheet pin table numbers GND as pin 9. This is the exposed; The pin types for BST (power_out, an internally generated bootstrap node) and LDO (power_out) are my; The EN threshold is given as 1.23V in the pin description, 1.24V in the UVLO section and 1.25V (VEN_"
        ],
        "pages_sent": 20,
        "cost_usd": 0.0901,
        "at": "2026-10-18T14:29:40"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602834757667737600",
        "pages": 20,
        "sha256": "3befa6af618d6037",
        "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": [
      {
        "file": "sct2a27ster.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": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sct2a27ster-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          1.65
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "33d23b64aa31e9ab313f4fbb9deb385c2a1350b2386f9ec61aa4a933f704cb2e",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "SCT",
      "Package": "ESOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "3befa6af618d60374d1b7797bbc7b10fff64f60b3a447e31b3f00cd693c6030b",
      "rows": [
        {
          "name": "Operating input voltage",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": 5.5,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VIN UVLO threshold",
          "symbol": "VUVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 4.7,
          "typ": 5,
          "max": 5.3,
          "conditions": "VIN rising",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Shutdown current from VIN pin",
          "symbol": "ISHDN",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 4.2,
          "max": 10,
          "conditions": "EN=0, EN_LDO=0, no load",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current from VIN pin",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 122,
          "max": 200,
          "conditions": "EN floating, EN_LDO=0, no load, non-switching, BOOT-SW=5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-side MOSFET on-resistance",
          "symbol": "RDSON_H",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 500,
          "max": 950,
          "conditions": "VBOOT-VSW=5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage of FB",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.188,
          "typ": 1.2,
          "max": 1.212,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "LDO output voltage",
          "symbol": "VLDO",
          "kind": "electrical",
          "unit": "V",
          "min": 3.168,
          "typ": 3.3,
          "max": 3.432,
          "conditions": "1.2V< EN_LDO <1.8V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "LDO output voltage",
          "symbol": "VLDO",
          "kind": "electrical",
          "unit": "V",
          "min": 4.8,
          "typ": 5,
          "max": 5.2,
          "conditions": "2.2V< EN_LDO or EN_LDO floating",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Switching frequency",
          "symbol": "FSW",
          "kind": "electrical",
          "unit": "kHz",
          "min": 260,
          "typ": 300,
          "max": 340,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum off-time",
          "symbol": "TOFF_MIN",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 200,
          "max": 260,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "HS MOSFET current limit",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "A",
          "min": 3.5,
          "typ": 4,
          "max": 4.5,
          "conditions": "TJ=25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "HS MOSFET current limit",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "A",
          "min": 3.3,
          "typ": 4,
          "max": 4.7,
          "conditions": "TJ=-40°C~125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating input voltage (recommended)",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 5.5,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage range (recommended)",
          "symbol": "VOUT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.2,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature (recommended)",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "BST pin voltage (absolute maximum)",
          "symbol": "VBST",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 116,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "VIN pin voltage (absolute maximum)",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 110,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "SW pin voltage (absolute maximum)",
          "symbol": "VSW",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -1,
          "typ": null,
          "max": 110,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "BST-SW voltage (absolute maximum)",
          "symbol": "VBST-SW",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "VBIAS pin voltage (absolute maximum)",
          "symbol": "VBIAS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 33,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "EN, FB, LDO, EN_LDO pin voltage (absolute maximum)",
          "symbol": "EN, FB, LDO, EN_LDO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature (absolute maximum)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction to ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 42,
          "max": null,
          "conditions": "ESOP-8L, junction to ambient",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction to case thermal resistance",
          "symbol": "RθJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 45.8,
          "max": null,
          "conditions": "ESOP-8L, junction to case",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
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    "info"
  ],
  "discovery_triggers": [
    "sct2a27ster"
  ],
  "discovery_pitch": "SCT2A27STER (SCT) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}