BD9G500EFJ-LAE2

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  "slug": "bd9g500efj-lae2",
  "title": "BD9G500EFJ-LAE2",
  "brief": "ROHM Semicon DC-DC Converters, SOIC-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": [
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  "component": {
    "mpn": "BD9G500EFJ-LAE2",
    "manufacturer": "ROHM Semicon",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8a13f1bc4b681f8c008cc78e26e22d7b.pdf",
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      "lbr": "bd9g500efj-lae2.lbr"
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    "distributor_links": {
      "lcsc": "C3190086",
      "digikey": "846-BD9G500EFJ-LAE2TR-ND",
      "mouser": "755-BD9G500EFJ-LAE2"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T00:53:38Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "846-BD9G500EFJ-LAE2TR-ND",
        "status": "found",
        "lifecycle": "Not For New Designs"
      },
      "mouser": {
        "pn": "755-BD9G500EFJ-LAE2",
        "status": "found",
        "lifecycle": "Not Recommended for New Designs"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "output",
        "description": "Switch pin connected to the source of the High-Side MOSFET; a Schottky barrier diode must be connected between this pin and the GND pin."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin for the IC; the external catch diode connects between SW and this pin."
      },
      {
        "number": "3",
        "name": "COMP",
        "type": "passive",
        "description": "Output of the gm error amplifier and input to the PWM comparator; phase compensation components connect to this pin."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback pin with an FB threshold voltage of 1.00 V (Typ, 0.99 V to 1.01 V)."
      },
      {
        "number": "5",
        "name": "RT",
        "type": "passive",
        "description": "Sets the internal oscillator frequency through a single resistor to GND, with a switching frequency range of 100 kHz to 650 kHz."
      },
      {
        "number": "6",
        "name": "EN",
        "type": "input",
        "description": "Enable input: 0.4 V or lower forces shutdown mode and 2.5 V or higher enables the device; this pin must be terminated."
      },
      {
        "number": "7",
        "name": "BOOT",
        "type": "passive",
        "description": "Bootstrap pin; a 1 µF bootstrap capacitor connects between this pin and SW and sets the High-Side MOSFET gate drive voltage."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply pin for the switching regulator and control circuit, with an input voltage range of 7 V to 76 V."
      }
    ],
    "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 hint says SOIC-8, but the datasheet gives the package for BD9G500EFJ-LAE2 as HTSOP-J8 (8; The HTSOP-J8 drawing also shows an EXP-PAD (backside heat dissipation pad). It is not a numbered pin"
        ],
        "pages_sent": 39,
        "cost_usd": 0.0127,
        "at": "2026-10-28T00:53:17"
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      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/8a13f1bc4b681f8c008cc78e26e22d7b.pdf",
        "pages": 39,
        "sha256": "60764fae453b65e1",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "seat": "z = 0",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-28",
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        "sha256": "efb0910f62a0e80cc48f6b9c2bf56ba259249d125d732f0af3a0ddc7724277e5",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "ROHM Semicon",
      "Package": "SOIC-8",
      "Category": "Power Supply Chip",
      "Pins": "8"
    },
    "appearance": {
      "contacts": {
        "quote": "·Provide the input capacitor close to the VIN pin of the IC as possible on the same plane as the IC. ·If there is any unused area on the PCB, provide a copper foil plane for the ground node to assist ",
        "page": 30,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "60764fae453b65e1e9d580c45b768fc09e3bb31fc60f077bd68889b701c19d7d"
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  "discovery_pitch": "BD9G500EFJ-LAE2 (ROHM Semicon) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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