SCT9339STER

{
  "schema_version": 1,
  "type": "component",
  "slug": "sct9339ster",
  "title": "SCT9339STER",
  "brief": "SCT DC-DC Converters, ESOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "sct9339ster"
  ],
  "component": {
    "mpn": "SCT9339STER",
    "manufacturer": "SCT",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c9dc583c71cfea52f1c22d36fe6ba5db.pdf",
    "parts": {
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      "footprint": "sct9339ster.kicad_mod",
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      "model_3d_plain": "sct9339ster.glb",
      "model_3d_step": "sct9339ster-etched.step",
      "model_3d_step_plain": "sct9339ster.step",
      "lbr": "sct9339ster.lbr"
    },
    "distributor_links": {
      "lcsc": "C509072"
    },
    "pins": [
      {
        "number": "1",
        "name": "BOOT",
        "type": "passive",
        "description": "Bootstrap supply for the high-side power MOSFET gate driver. Connect a 0.1uF (or greater) ceramic capacitor between BOOT and SW to generate the boosted gate-drive voltage."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input, 3.8V to 28V. Must be locally bypassed with a ceramic capacitor close to the pin."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable logic input. Floating the pin enables the device; supports high-voltage input up to VIN so it can be tied directly to VIN for auto-enable. Precision thresholds of 1.18V rising / 1.1V falling allow programmable UVLO via a resistor divider."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating or tie to a convenient node."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Buck converter output feedback sensing input. Connect a resistor divider from VOUT to FB to program the output voltage; the device regulates FB to the internal 0.8V (±1%) reference."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating or tie to a convenient node."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating or tie to a convenient node."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "power_out",
        "description": "Switching node of the buck converter. Connect to the external inductor; also serves as the bootstrap capacitor return reference for the BOOT pin."
      },
      {
        "number": "9",
        "name": "GND (Thermal Pad)",
        "type": "power_in",
        "description": "Exposed thermal pad on the bottom of the ESOP-8 package. Serves as device ground and the heat-dissipation path; must be soldered to the PCB ground plane for proper operation and thermal performance."
      }
    ],
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        "source_tier": "lcsc"
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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": {
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      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm@sha256:5848244c5e72002e",
      "mark": "drawn"
    },
    "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
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-07",
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    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "SCT",
      "Package": "ESOP-8",
      "Category": "PMIC",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "d8867bdb12241602",
      "rows": [
        {
          "name": "Operating input voltage range",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": 3.8,
          "typ": null,
          "max": 28,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Feedback reference voltage tolerance (printed as 0.8V ±1%)",
          "symbol": "VFB",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "",
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        },
        {
          "name": "Shutdown current",
          "symbol": "ISD",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 1,
          "max": 3,
          "conditions": "EN=0, No load, VIN=12V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Human Body Model ESD rating, all pins",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "HBM, per ANSI-JEDEC-JS-001-2014",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Charged Device Model ESD rating, all pins",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -0.5,
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          "max": 0.5,
          "conditions": "CDM, per ANSI-JEDEC-JS-002-2014",
          "source_page": 3,
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        {
          "name": "BST pin voltage",
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          "min": -0.3,
          "typ": null,
          "max": 38,
          "conditions": "",
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        {
          "name": "VIN, SW, EN pin voltage",
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        {
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          "typ": null,
          "max": 5.5,
          "conditions": "",
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        },
        {
          "name": "Operating junction temperature (absolute maximum)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "Over operating free-air temperature",
          "source_page": 2,
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        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Operating junction temperature (recommended)",
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          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "Over operating free-air temperature range",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction to ambient thermal resistance (ESOP-8L)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 42,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction to case thermal resistance (ESOP-8L)",
          "symbol": "RθJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 45.8,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_triggers": [
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  "discovery_pitch": "SCT9339STER (SCT) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
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  "variants": [
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      "mpn": "SCT9339STER",
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  "updated_at": "2026-09-25T05:36:35.884Z"
}