BD7F100HFN-LBTR

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  "slug": "bd7f100hfn-lbtr",
  "title": "BD7F100HFN-LBTR",
  "brief": "ROHM Semicon DC-DC Converters, SOP-8-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "BD7F100HFN-LBTR",
    "manufacturer": "ROHM Semicon",
    "package": "SOP-8-EP",
    "pin_count": 9,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589831499890790400",
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    "distributor_links": {
      "lcsc": "C2071622"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T15:46:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog system GND for the control circuitry, separate from the power-system ground PGND."
      },
      {
        "number": "2",
        "name": "SDX/EN",
        "type": "input",
        "description": "Shutdown/enable control: the internal regulator is shut down when this terminal is below 0.9V (Typ), and soft start enables above 2.0V (Typ)."
      },
      {
        "number": "3",
        "name": "COMP",
        "type": "passive",
        "description": "Load current compensation pin used to set up the output voltage compensation; the datasheet gives no numeric limit for this pin."
      },
      {
        "number": "4",
        "name": "REF",
        "type": "input",
        "description": "Output voltage setup pin whose voltage is the feedback voltage compared against the internal VREF in the comparator."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Output voltage setup pin; the output voltage is set by two external resistors and the transformer turns ratio."
      },
      {
        "number": "6",
        "name": "PGND",
        "type": "power_in",
        "description": "Power-system GND for the switching power stage."
      },
      {
        "number": "7",
        "name": "SW",
        "type": "output",
        "description": "Switching output driven by the built-in N-channel MOSFET; the SW terminal operating voltage is 50V (Max) and it goes Hi-Z during VIN undervoltage lockout."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input with a 3V to 40V operating range; VIN UVLO trips below 2.5V (Typ) and recovers at 2.65V (Typ)."
      },
      {
        "number": "9",
        "name": "EP",
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        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
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          "exposed pad 9 added from the footprint"
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        "at": "2026-10-18T15:43:53"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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  "metadata": {
    "specs": {
      "Manufacturer": "ROHM Semicon",
      "Package": "SOP-8-EP",
      "Category": "Power Supply Chip",
      "Pins": "9"
    },
    "characteristics": {
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          "name": "VIN Input Power Voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
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          "max": 45,
          "conditions": "Not to exceed Power Dissipation (Pd) (Note 1)",
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        },
        {
          "name": "SW Terminal Voltage",
          "symbol": "VSW",
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          "max": 60,
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        {
          "name": "REF Terminal Voltage",
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        {
          "name": "COMP Terminal Voltage",
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          "name": "Power Dissipation",
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          "conditions": "One-layer glass-epoxy board 70mm x 70mm x 1.6mm, 65% copper foil; reduced by 14.0mW/°C above 25°C (Note 2)",
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        {
          "name": "Storage Temperature Range",
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        {
          "name": "Maximum Junction Temperature",
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          "name": "VIN Input Power Voltage (recommended)",
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          "typ": 24,
          "max": 40,
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        {
          "name": "SW Terminal Voltage (recommended)",
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          "name": "Junction Temperature",
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          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "Life time is derated at junction temperature greater than 125°C (Note 4)",
          "source_page": 4,
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        },
        {
          "name": "Quiescent Current",
          "symbol": "IST",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0,
          "max": 10,
          "conditions": "VSDX/EN = 0V",
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        {
          "name": "Operating Current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2,
          "max": 4,
          "conditions": "VSDX/EN = 2.5V; VREF = 2V (at PFM operation)",
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        },
        {
          "name": "UVLO Detection Voltage",
          "symbol": "VUVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 2.3,
          "typ": 2.5,
          "max": 2.7,
          "conditions": "VIN falling",
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        },
        {
          "name": "UVLO Hysteresis Voltage",
          "symbol": "VUVLO_HYS",
          "kind": "electrical",
          "unit": "V",
          "min": 0.1,
          "typ": 0.15,
          "max": 0.2,
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        {
          "name": "Shutdown Voltage",
          "symbol": "VSDX",
          "kind": "electrical",
          "unit": "V",
          "min": 0.3,
          "typ": 0.9,
          "max": 1.5,
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        {
          "name": "Enable Voltage",
          "symbol": "VEN",
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          "min": 1.9,
          "typ": 2,
          "max": 2.1,
          "conditions": "VSDX/EN rising",
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          "name": "Enable Hysteresis Voltage",
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          "min": 0.15,
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        {
          "name": "SDX/EN Input Current",
          "symbol": "ISDX/EN",
          "kind": "electrical",
          "unit": "µA",
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          "max": 1,
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        },
        {
          "name": "Reference Voltage",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 0.768,
          "typ": 0.78,
          "max": 0.792,
          "conditions": "",
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        },
        {
          "name": "Over Current Limit",
          "symbol": "ILIMIT",
          "kind": "electrical",
          "unit": "A",
          "min": 1,
          "typ": 1.25,
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        {
          "name": "ON-Resistance",
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          "unit": "Ω",
          "min": null,
          "typ": 0.5,
          "max": null,
          "conditions": "Between SW - PGND terminals",
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        },
        {
          "name": "Switching Frequency",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "kHz",
          "min": null,
          "typ": 400,
          "max": null,
          "conditions": "At PWM operation (Duty=40%)",
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        },
        {
          "name": "Minimum ON Time",
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          "unit": "ns",
          "min": null,
          "typ": 350,
          "max": null,
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        {
          "name": "Minimum OFF Time",
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          "unit": "ns",
          "min": null,
          "typ": 300,
          "max": null,
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        },
        {
          "name": "Maximum OFF Time",
          "symbol": "tOFF_MAX",
          "kind": "electrical",
          "unit": "µs",
          "min": null,
          "typ": 20,
          "max": null,
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        },
        {
          "name": "Soft Start Time",
          "symbol": "tSS",
          "kind": "electrical",
          "unit": "ms",
          "min": null,
          "typ": 6,
          "max": null,
          "conditions": "0V to (VREF×90%)",
          "source_page": 5,
          "source": "datasheet"
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      ]
    }
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