BL8531CB5TR36

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl8531cb5tr36",
  "title": "BL8531CB5TR36",
  "brief": "BL Shanghai Belling DC-DC Converters, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "bl8531cb5tr36"
  ],
  "component": {
    "mpn": "BL8531CB5TR36",
    "manufacturer": "BL Shanghai Belling",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2201140930_BL-Shanghai-Belling-BL8531CB5TR36_C2928100.pdf",
    "parts": {
      "symbol": "bl8531cb5tr36.kicad_sym",
      "footprint": "bl8531cb5tr36.kicad_mod",
      "model_3d": "bl8531cb5tr36-etched.glb",
      "model_3d_plain": "bl8531cb5tr36.glb",
      "model_3d_step": "bl8531cb5tr36-etched.step",
      "model_3d_step_plain": "bl8531cb5tr36.step",
      "lbr": "bl8531cb5tr36.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "CE",
        "type": "input",
        "description": "Chip enable, active high. Threshold VCEH >= 0.8V drives the device on, VCEL <= 0.3V shuts it down to minimize standby supply current. Absolute limits -0.3V to (Vout+0.3V)."
      },
      {
        "number": "2",
        "name": "OUT",
        "type": "power_out",
        "description": "Output feedback pin, also serves as the internal supply rail for the IC. Connect to the boost output node (after the Schottky diode) with the output filter capacitor (100uF tantalum typ) to GND. Internal feedback regulates this pin to the trimmed VOUT setpoint (3.3V for the -33 suffix, this variant is -36 = 3.6V)."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating or tie to ground per board convention."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. Connect to the system ground plane with low impedance; input capacitor and output capacitor returns should tie here."
      },
      {
        "number": "5",
        "name": "Lx",
        "type": "output",
        "description": "Switching node. Connect between the boost inductor (27uH typ) and the anode of the Schottky rectifier diode (e.g. 1N5817/1N5819/1N5822). Internal N-channel MOSFET switch pulls Lx to GND during the on-phase; rated Lx pin current 0.7A, RSWON ~0.4Ω, oscillator ~350kHz PFM."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2201140930_BL-Shanghai-Belling-BL8531CB5TR36_C2928100.pdf",
        "pages": 11,
        "sha256": "f28e740a06541198",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bl8531cb5tr36.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": "bl8531cb5tr36-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
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7ac1cacca450af62573ec634067fa029f990ce09fd291462be2198e47ea6f4ce",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL Shanghai Belling",
      "Package": "SOT-23-5",
      "Category": "PMIC",
      "Pins": "5"
    }
  },
  "variants": [
    {
      "mpn": "BL8531CB5TR36",
      "kind": "packaging"
    },
    {
      "mpn": "BL8531CB5TR36CB3TR",
      "kind": "packaging"
    },
    {
      "mpn": "BL8531CB5TR36CB3ATR",
      "kind": "packaging"
    },
    {
      "mpn": "BL8531CB5TR36CC3TR",
      "kind": "packaging"
    },
    {
      "mpn": "BL8531CB5TR36CHBG",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bl8531cb5tr36"
  ],
  "discovery_pitch": "BL8531CB5TR36 (BL Shanghai Belling) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bl8531cb5tr36.kicad_sym",
    "bl8531cb5tr36.kicad_mod",
    "bl8531cb5tr36.glb",
    "bl8531cb5tr36.step",
    "bl8531cb5tr36.lbr",
    "docs/hero.png",
    "docs/bl8531cb5tr36-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:55:14.067Z"
}