BD93291EFJ-E2

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  "type": "component",
  "slug": "bd93291efj-e2",
  "title": "BD93291EFJ-E2",
  "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",
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  "component": {
    "mpn": "BD93291EFJ-E2",
    "manufacturer": "ROHM Semicon",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b23bf7aa8b0d3d3d6a54dded477a7e67.pdf",
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      "lbr": "bd93291efj-e2.lbr"
    },
    "distributor_links": {
      "lcsc": "C3190091",
      "digikey": "BD93291EFJ-E2TR-ND",
      "mouser": "755-BD93291EFJ-E2"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T23:48:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "BD93291EFJ-E2TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "755-BD93291EFJ-E2",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "output",
        "description": "Connects the inductor switching node of the high-voltage buck converter, tied to the high-side FET source and low-side FET drain, with an SW voltage range of -0.5V to 26V and an absolute maximum of 30V."
      },
      {
        "number": "2",
        "name": "BST",
        "type": "power_out",
        "description": "Connect a 0.1uF bootstrap capacitor between BST and SW to generate the high-side N-channel MOSFET gate drive voltage, with BST rated at VSW+7V."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable input where high (2.3V typ.) activates the output and low (1.8V typ.) shuts the IC down, with an absolute maximum of 30V."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input for the high-voltage buck converter with an operating range of 8.0V to 26V (absolute maximum 30V), and a 10uF ceramic bias capacitor is recommended."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground for the low-side MOSFETs of both buck converters and analog ground, which must be the minimum potential in the system under all operating conditions."
      },
      {
        "number": "6",
        "name": "FBL",
        "type": "input",
        "description": "Output voltage feedback input of the low-voltage buck converter, regulated to a feedback voltage of 0.8V ±1.5%."
      },
      {
        "number": "7",
        "name": "SWL",
        "type": "output",
        "description": "Connects the inductor switching node of the low-voltage buck converter, with a SWL voltage range of -0.5V to 5.5V and an absolute maximum of 7.0V."
      },
      {
        "number": "8",
        "name": "VOUT",
        "type": "power_in",
        "description": "Supply pin for the low-voltage buck converter (5.0V) and output voltage feedback for the high-voltage buck converter, with an absolute maximum of 7.0V, and a 10uF ceramic bias capacitor is recommended."
      }
    ],
    "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 hint says SOIC-8, but the MPN BD93291EFJ-E2 is the EFJ variant, which the datasheet defines as H"
        ],
        "pages_sent": 24,
        "cost_usd": 0.0141,
        "at": "2026-10-26T23:48:05"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/b23bf7aa8b0d3d3d6a54dded477a7e67.pdf",
        "pages": 24,
        "sha256": "1dcc194d965ac6b0",
        "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",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-26",
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        "sha256": "11e7e956377054f9cd144bcbb6f45c5411a4ff3649e0e3310223e5bd081321a8",
        "checked": "2026-10-26",
        "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": "Especially, C_CO3 between VOUT and GND must be placed near the VOUT pin, and keep the distance \"b\" less than 2mm. ・When there is unused area on PCB, please arrange the copper foil plain of DC nodes, s",
        "page": 15,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "1dcc194d965ac6b02c640dabe32dedcb9dd2dceacdd5d5f453a97afc20d7a53c"
    }
  },
  "variants": [],
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  "discovery_triggers": [
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  "discovery_pitch": "BD93291EFJ-E2 (ROHM Semicon) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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