BL8028CB5TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl8028cb5tr",
  "title": "BL8028CB5TR",
  "brief": "BL Shanghai Belling DC-DC Converters, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "bl8028cb5tr"
  ],
  "component": {
    "mpn": "BL8028CB5TR",
    "manufacturer": "BL Shanghai Belling",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5562710a25f1607e223d57a89748b369.pdf",
    "parts": {
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      "model_3d_step": "bl8028cb5tr-etched.step",
      "model_3d_step_plain": "bl8028cb5tr.step",
      "lbr": "bl8028cb5tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C266177"
    },
    "pins": [
      {
        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Enable input for the IC. Drive high (VIH >= 1.2V) to enable the converter; drive low (VIL <= 0.5V) to place the part in shutdown (IQ < 1uA). EN leakage current is typically <1uA."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Return path for internal control circuitry and the low-side NMOS synchronous rectifier. Must be tied to the system ground plane with a low-impedance connection."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "output",
        "description": "Switching node. Connect an external inductor (typ. 1uH to 2.2uH) between SW and the regulator output. Internally tied to the drain of the high-side PMOS and low-side NMOS power switches; peak current limit ~2.3A."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input voltage, 2.6V to 5.5V (absolute max 8V; OVP threshold 6.1V typ). Decouple with a low-ESR ceramic capacitor (e.g. 10uF) placed as close to the pin as possible."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the internal error amplifier. Connect an external resistor divider from VOUT to FB and FB to GND to program the output voltage between 0.6V and VIN. Internal reference is 0.6V (typ); FB leakage <1uA."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/5562710a25f1607e223d57a89748b369.pdf",
        "pages": 7,
        "sha256": "42b7f3890d1ac673",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-5@sha256:455a3f7c3e5eb5b8",
      "mark": "drawn"
    },
    "models_3d": [
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        "file": "bl8028cb5tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bl8028cb5tr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "44616d4c01b7f9bf6be8fb63966901b4143baf367104af31ba96b56900515814",
        "checked": "2026-10-07",
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      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL Shanghai Belling",
      "Package": "SOT-23-5",
      "Category": "PMIC",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "42b7f3890d1ac673",
      "rows": [
        {
          "name": "Input voltage range",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": 2.6,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Feedback voltage",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 0.588,
          "typ": 0.6,
          "max": 0.612,
          "conditions": "Vin=5V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Under voltage lockout",
          "symbol": "VUVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 1.9,
          "typ": 2.1,
          "max": 2.3,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Peak current limit",
          "symbol": "ILIMIT",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 2.3,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Max input voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Max operating junction temperature (TJ)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature (TA)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "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": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Lead temperature & time",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10S",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum power dissipation",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "SOT23-5",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "ESD (HBM)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 2000,
          "typ": null,
          "max": null,
          "conditions": "HBM; datasheet prints '>2000V'",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "BL8028CB5TR (BL Shanghai Belling) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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    "path": "docs/hero.png"
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    "bl8028cb5tr.step",
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  "visibility": {
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  "updated_at": "2026-09-24T17:52:13.023Z"
}