bd9d320efj-e2

{
  "slug": "bd9d320efj-e2",
  "version": "0.1.0",
  "type": "component",
  "description": "ROHM DC-DC Converters, HTSOP-8-EP. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "pmic",
    "bd9d320efj-e2"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bd9d320efj-e2.kicad_sym",
    "bd9d320efj-e2.kicad_mod",
    "bd9d320efj-e2.glb",
    "bd9d320efj-e2.step",
    "bd9d320efj-e2.lbr",
    "docs/hero.png",
    "docs/bd9d320efj-e2-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bd9d320efj-e2-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "component": {
    "mpn": "BD9D320EFJ-E2",
    "manufacturer": "ROHM",
    "package": "HTSOP-8-EP",
    "pin_count": 9,
    "category": "DC-DC Converters",
    "parts": {
      "symbol": "bd9d320efj-e2.kicad_sym",
      "footprint": "bd9d320efj-e2.kicad_mod",
      "model_3d": "bd9d320efj-e2-etched.glb",
      "model_3d_plain": "bd9d320efj-e2.glb",
      "model_3d_step": "bd9d320efj-e2-etched.step",
      "model_3d_step_plain": "bd9d320efj-e2.step",
      "lbr": "bd9d320efj-e2.lbr"
    },
    "pins": [
      {
        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Enable input. Drive ≤0.3V to force shutdown; drive ≥2.2V to enable the device. Must not be left floating."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Feedback input. Inverting input of the error comparator, compared against the internal 0.765V reference (VREF). Set VOUT via an external resistor divider from VOUT to FB to GND."
      },
      {
        "number": "3",
        "name": "VREG",
        "type": "power_out",
        "description": "Internal 5.25V (Typ) LDO output used as the IC's control-circuit supply. Active when EN is above 2.2V. Bypass to GND with a 1µF ceramic capacitor."
      },
      {
        "number": "4",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start timing pin. Connect a capacitor to GND to set the output-voltage rise time during startup."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return for both the switching output stage and the internal control circuitry."
      },
      {
        "number": "6",
        "name": "SW",
        "type": "output",
        "description": "Switch node. Connected to the source of the high-side MOSFET and drain of the low-side MOSFET. Connect the output inductor here (sized for the required DC current) and a 0.1µF bootstrap capacitor between SW and BOOT."
      },
      {
        "number": "7",
        "name": "BOOT",
        "type": "passive",
        "description": "Bootstrap capacitor node. Connect a 0.1µF capacitor between BOOT and SW; this capacitor generates the gate-drive voltage for the high-side MOSFET (VBOOT-VSW = 4.5-5.5V recommended)."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "Power-supply input for the switching regulator. Recommended operating range 4.5V to 18V (20V absolute max). Bypass to GND with 20µF (10µF×2) plus 0.1µF ceramic capacitors close to the pin."
      },
      {
        "number": "9",
        "name": "FIN",
        "type": "power_in",
        "description": "Exposed backside heat-dissipation pad. Connect to the internal PCB ground plane with multiple thermal vias for good heat dissipation. Electrically tied to GND."
      }
    ],
    "provenance": {
      "rebuilt": "component block rebuilt 2026-10-05 from this page's own README pinout table and .kicad_sym (pins cross-checked), no re-extraction"
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "distributor_links": {
      "lcsc": "C509760",
      "digikey": "BD9D320EFJ-E2TR-ND",
      "mouser": "755-BD9D320EFJ-E2"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T18:54:14Z",
      "source": "Component Ocean /api/assign-pns + lcsc_map",
      "digikey": {
        "pn": "BD9D320EFJ-E2TR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "755-BD9D320EFJ-E2",
        "status": "found"
      }
    },
    "models_3d": [
      {
        "file": "bd9d320efj-e2.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.3,
          4.9,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5725ef8fdb2a59de31e3e536dac45cd9ef218380d71f34406b961c302e1ec9b9",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bd9d320efj-e2-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.3,
          4.9,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "360a3f4abf993ec5bce0d79d188d132a53b23233d9950c62e43d509dc8c74d25",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}