BL8034CS8TR

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  "type": "component",
  "slug": "bl8034cs8tr",
  "title": "BL8034CS8TR",
  "brief": "BL Shanghai Belling DC-DC Converters, ESOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "pmic",
    "bl8034cs8tr"
  ],
  "component": {
    "mpn": "BL8034CS8TR",
    "manufacturer": "BL Shanghai Belling",
    "package": "ESOP-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/44084e56bde0e127b1098f479e1d94b8.pdf",
    "parts": {
      "symbol": "bl8034cs8tr.kicad_sym",
      "footprint": "bl8034cs8tr.kicad_mod",
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      "model_3d_plain": "bl8034cs8tr.glb",
      "model_3d_step": "bl8034cs8tr-etched.step",
      "model_3d_step_plain": "bl8034cs8tr.step",
      "lbr": "bl8034cs8tr.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "BST",
        "type": "passive",
        "description": "High-side power transistor gate-drive bootstrap input. Connect a 1uF ceramic capacitor between BST and SW to generate the boosted gate-drive rail for the internal high-side MOSFET. Absolute maximum: -0.3V to SW+6V."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Main power input, 4.2V to 16V operating range (17V absolute max). Bypass with a 10uF to 22uF ceramic capacitor to GND placed close to the pin."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "power_out",
        "description": "Switching node connecting the internal high-side and low-side MOSFETs to the external inductor. Absolute max -0.3V to VIN+0.3V; internally current-limited to ~6A peak (cycle-by-cycle)."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground return. Tie the exposed pad to this pin on the PCB and to a large GND copper area for thermal performance."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the internal error amplifier. Regulates to an internal reference of 0.923V (typical, 0.904V-0.942V). Set output voltage with a resistor divider from VOUT to FB to GND. Absolute max -0.3V to 6V."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. May be left floating or tied to GND."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Enable input. Drive high (>=1.5V) to enable the converter; drive low (<=0.6V) to place the device in shutdown (~5uA typical). Absolute max -0.3V to VIN+0.3V. Do not leave floating; a 100k pull-up to VIN is typical."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. May be left floating or tied to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/44084e56bde0e127b1098f479e1d94b8.pdf",
        "pages": 5,
        "sha256": "58a69f29e7369773",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bl8034cs8tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.55
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2d6f7e774e8143e3320cbd59eb5be9f3b7864614644e3b072006e1eb05fb7fa6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bl8034cs8tr-etched.step",
        "role": "eda",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1f2ae449cbf05f0576c8f9fc29ab3f103ebf3996da8797f8498bec645a1c0f3a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL Shanghai Belling",
      "Package": "ESOP-8",
      "Category": "PMIC",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "58a69f29e7369773",
      "rows": [
        {
          "name": "Input Voltage Range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.2,
          "typ": null,
          "max": 16,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Regulated Feedback Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.904,
          "typ": 0.923,
          "max": 0.942,
          "conditions": "4.2V≤VIN ≤16V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 17,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "SW, EN Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Maximum printed as VIN+0.3V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "BST Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Maximum printed as SW+6V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "FB Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Ambient Temperature (Ta)",
          "symbol": "Ta",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature (Ts)",
          "symbol": "Ts",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [
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      "mpn": "BL8034CS8TR",
      "kind": "packaging"
    }
  ],
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  "discovery_triggers": [
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  "discovery_pitch": "BL8034CS8TR (BL Shanghai Belling) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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    "bl8034cs8tr.lbr",
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  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:52:20.864Z"
}