BD9G101G-TR

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  "slug": "bd9g101g-tr",
  "title": "BD9G101G-TR",
  "brief": "ROHM DC-DC Converters, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
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  "component": {
    "mpn": "BD9G101G-TR",
    "manufacturer": "ROHM",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f17742d0361e41c88a69f832aefd5d17.pdf",
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    "distributor_links": {
      "lcsc": "C108761"
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    "pins": [
      {
        "number": "1",
        "name": "BST",
        "type": "passive",
        "description": "Bootstrap supply for the floating high-side power NMOS driver. Connect a bypass capacitor between BST and LX for bootstrap operation. Max BST-to-GND 50V; max BST-to-LX 7V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return. Should be connected as close as possible to the output capacitor ground to avoid the high-current switching path."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Voltage feedback pin; error-amp input. The DC/DC regulates FB to 0.75V (±1.5% at 25°C). Set output voltage with an external resistor divider from VOUT to FB. Max FB voltage 7V."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Enable input. DC/DC starts when EN ≥ 2.0V; shuts down when EN is open or ≤ 0.8V. Internal pull-down of about 550kΩ to GND. Max EN voltage 45V."
      },
      {
        "number": "5",
        "name": "VCC",
        "type": "power_in",
        "description": "Input supply pin, 6V to 42V operating range (45V absolute max). Should be bypassed with a capacitor located as close to the pin as possible."
      },
      {
        "number": "6",
        "name": "LX",
        "type": "output",
        "description": "Power NMOS switch node output. Connect to the Schottky freewheeling diode and inductor as close to the pin as possible. Max LX voltage 45V; typical switch current limit 1.2A."
      }
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        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
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    "pin1": {
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      "at": [
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        -0.95
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      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-6@sha256:f341c73aac9dcb55",
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        "seat": "z = 0",
        "extents_mm": [
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          2.9,
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "ROHM",
      "Package": "SOT-23-6",
      "Category": "PMIC",
      "Pins": "6"
    },
    "characteristics": {
      "version": 1,
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      "rows": [
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          "name": "Stand-by Current",
          "symbol": "Ist",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0,
          "max": 5,
          "conditions": "VEN=0V",
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        },
        {
          "name": "Operating Current",
          "symbol": "Icc",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.7,
          "max": 1.2,
          "conditions": "FB=1.2V",
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        },
        {
          "name": "UVLO Threshold Voltage",
          "symbol": "Vuv",
          "kind": "electrical",
          "unit": "V",
          "min": 5.1,
          "typ": 5.4,
          "max": 5.7,
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        },
        {
          "name": "UVLO Hysteresis width",
          "symbol": "Vuvhy",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 200,
          "max": 300,
          "conditions": "",
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        },
        {
          "name": "Switching Frequency",
          "symbol": "fosc",
          "kind": "electrical",
          "unit": "MHz",
          "min": 1.3,
          "typ": 1.5,
          "max": 1.7,
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        },
        {
          "name": "Max Duty Cycle",
          "symbol": "Dmax",
          "kind": "electrical",
          "unit": "%",
          "min": 85,
          "typ": null,
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        {
          "name": "FB Pin Reference Voltage",
          "symbol": "VFBN",
          "kind": "electrical",
          "unit": "V",
          "min": 0.739,
          "typ": 0.75,
          "max": 0.761,
          "conditions": "Ta=25℃",
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        {
          "name": "FB Pin Reference Voltage",
          "symbol": "VFBA",
          "kind": "electrical",
          "unit": "V",
          "min": 0.735,
          "typ": 0.75,
          "max": 0.765,
          "conditions": "Ta=-25~105℃",
          "source_page": 4,
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        {
          "name": "FB Pin Bias Current",
          "symbol": "IFB",
          "kind": "electrical",
          "unit": "nA",
          "min": -100,
          "typ": 0,
          "max": 100,
          "conditions": "VFB=2.0V",
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        },
        {
          "name": "Soft-Start Time",
          "symbol": "Tsoft",
          "kind": "electrical",
          "unit": "ms",
          "min": 1.2,
          "typ": 4,
          "max": null,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Switch Current Limit",
          "symbol": "Iocp",
          "kind": "electrical",
          "unit": "A",
          "min": 0.85,
          "typ": 1.2,
          "max": null,
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          "source_page": 4,
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        },
        {
          "name": "EN Threshold Voltage ON",
          "symbol": "VENON",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "EN Threshold Voltage OFF",
          "symbol": "VENOFF",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 0.8,
          "conditions": "",
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        },
        {
          "name": "EN Input Bias Current",
          "symbol": "REN",
          "kind": "electrical",
          "unit": "µA",
          "min": 2.7,
          "typ": 5.5,
          "max": 11,
          "conditions": "VEN=3V",
          "source_page": 4,
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        },
        {
          "name": "Input Voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 6,
          "typ": null,
          "max": 42,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "Output Voltage",
          "symbol": "VOUT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "Restricted by minimum on pulse typ. 100nsec (*3); upper limit VCC×0.7 restricted by max duty, Ron and BST-UVLO (*4)",
          "source_page": 5,
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        },
        {
          "name": "Output Current",
          "symbol": "IOUT",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 500,
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        {
          "name": "Input Voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
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          "max": 45,
          "conditions": "",
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        {
          "name": "Maximum input current",
          "symbol": "Imax",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 1,
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        {
          "name": "BST to GND",
          "symbol": "VBST",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
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          "max": 50,
          "conditions": "",
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        {
          "name": "BST to LX",
          "symbol": "⊿VBST",
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          "unit": "V",
          "min": null,
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        {
          "name": "EN",
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          "min": null,
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          "max": 45,
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        {
          "name": "Lx",
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          "min": null,
          "typ": null,
          "max": 45,
          "conditions": "",
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        },
        {
          "name": "FB",
          "symbol": "VFB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 7,
          "conditions": "",
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          "name": "Power Dissipation",
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          "max": 0.675,
          "conditions": "During mounting of 70×70×1.6t mm 1layer board. Reduce by 5.4mW for every 1℃ increase. (Above 25℃)",
          "source_page": 4,
          "source": "datasheet"
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          "name": "Operating Temperature",
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          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 105,
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          "name": "Storage Temperature",
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          "min": -55,
          "typ": null,
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          "source_page": 4,
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        {
          "name": "Junction Temperature",
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          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
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  "updated_at": "2026-09-24T17:43:05.634Z"
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