BL6552

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl6552",
  "title": "BL6552",
  "brief": "BL Shanghai Belling Supervisor and Reset ICs, QFN-36-EP(6x6). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "bl6552"
  ],
  "component": {
    "mpn": "BL6552",
    "manufacturer": "BL Shanghai Belling",
    "package": "QFN-36-EP(6x6)",
    "pin_count": 36,
    "category": "PMIC",
    "subcategory": "Supervisor and Reset ICs",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2202132000_BL-Shanghai-Belling-BL6552_C2841007.pdf",
    "parts": {
      "symbol": "bl6552.kicad_sym",
      "footprint": "bl6552.kicad_mod",
      "model_3d": "bl6552-etched.glb",
      "model_3d_plain": "bl6552.glb",
      "model_3d_step": "bl6552-etched.step",
      "model_3d_step_plain": "bl6552.step",
      "lbr": "bl6552.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "INP",
        "type": "input",
        "description": "Neutral-line current channel positive differential input. Max differential voltage per pair ±0.7V."
      },
      {
        "number": "2",
        "name": "VREF",
        "type": "bidirectional",
        "description": "Internal 1.2V reference voltage; can be used as reference input or output. Decouple externally."
      },
      {
        "number": "3",
        "name": "VAN",
        "type": "input",
        "description": "Phase-A voltage channel negative differential input. Max differential voltage per pair ±0.7V."
      },
      {
        "number": "4",
        "name": "VAP",
        "type": "input",
        "description": "Phase-A voltage channel positive differential input."
      },
      {
        "number": "5",
        "name": "VBN",
        "type": "input",
        "description": "Phase-B voltage channel negative differential input. Max differential voltage per pair ±0.7V."
      },
      {
        "number": "6",
        "name": "VBP",
        "type": "input",
        "description": "Phase-B voltage channel positive differential input."
      },
      {
        "number": "7",
        "name": "VCN",
        "type": "input",
        "description": "Phase-C voltage channel negative differential input. Max differential voltage per pair ±0.7V."
      },
      {
        "number": "8",
        "name": "VCP",
        "type": "input",
        "description": "Phase-C voltage channel positive differential input."
      },
      {
        "number": "9",
        "name": "NRST",
        "type": "input",
        "description": "Active-low reset input."
      },
      {
        "number": "10",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "11",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground."
      },
      {
        "number": "12",
        "name": "CS",
        "type": "input",
        "description": "SPI chip-select input when SEL=1; when SEL=0 acts as UART baud-rate select input."
      },
      {
        "number": "13",
        "name": "SDO",
        "type": "output",
        "description": "SPI MISO / UART TX output data pin (function selected by SEL)."
      },
      {
        "number": "14",
        "name": "SDI",
        "type": "input",
        "description": "SPI MOSI / UART RX input data pin (function selected by SEL)."
      },
      {
        "number": "15",
        "name": "SCLK",
        "type": "input",
        "description": "SPI clock input when SEL=1; when SEL=0 acts as UART baud-rate select input."
      },
      {
        "number": "16",
        "name": "IRQ1",
        "type": "output",
        "description": "Interrupt-status logic output 1."
      },
      {
        "number": "17",
        "name": "IRQ2",
        "type": "output",
        "description": "Interrupt-status logic output 2."
      },
      {
        "number": "18",
        "name": "CLKOUT",
        "type": "output",
        "description": "Crystal oscillator output pin (connect to external 8MHz crystal)."
      },
      {
        "number": "19",
        "name": "CLKIN",
        "type": "input",
        "description": "Crystal oscillator input pin; external crystal frequency 8MHz."
      },
      {
        "number": "20",
        "name": "VPP",
        "type": "power_in",
        "description": "Reserved power pin; may be left floating."
      },
      {
        "number": "21",
        "name": "CF1",
        "type": "output",
        "description": "Calibration pulse output 1 (active-power energy pulse)."
      },
      {
        "number": "22",
        "name": "CF2",
        "type": "output",
        "description": "Calibration pulse output 2 (reactive-power energy pulse)."
      },
      {
        "number": "23",
        "name": "AT1",
        "type": "output",
        "description": "Configurable logic output 1 (programmable status indication)."
      },
      {
        "number": "24",
        "name": "AT2",
        "type": "output",
        "description": "Configurable logic output 2 (programmable status indication)."
      },
      {
        "number": "25",
        "name": "AT3",
        "type": "output",
        "description": "Configurable logic output 3 (programmable status indication)."
      },
      {
        "number": "26",
        "name": "DVDD18",
        "type": "power_out",
        "description": "Internal 1.8V digital LDO output; connect an external 0.1µF filter capacitor to GND."
      },
      {
        "number": "27",
        "name": "SEL",
        "type": "input",
        "description": "Interface select input: 0 (default) selects UART, 1 selects SPI."
      },
      {
        "number": "28",
        "name": "DVDD",
        "type": "power_in",
        "description": "Digital 3.3V supply input."
      },
      {
        "number": "29",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog 3.3V supply input."
      },
      {
        "number": "30",
        "name": "ICN",
        "type": "input",
        "description": "Phase-C current channel negative differential input. Max differential voltage per pair ±0.7V."
      },
      {
        "number": "31",
        "name": "ICP",
        "type": "input",
        "description": "Phase-C current channel positive differential input."
      },
      {
        "number": "32",
        "name": "IBN",
        "type": "input",
        "description": "Phase-B current channel negative differential input. Max differential voltage per pair ±0.7V."
      },
      {
        "number": "33",
        "name": "IBP",
        "type": "input",
        "description": "Phase-B current channel positive differential input."
      },
      {
        "number": "34",
        "name": "IAN",
        "type": "input",
        "description": "Phase-A current channel negative differential input. Max differential voltage per pair ±0.7V."
      },
      {
        "number": "35",
        "name": "IAP",
        "type": "input",
        "description": "Phase-A current channel positive differential input."
      },
      {
        "number": "36",
        "name": "INN",
        "type": "input",
        "description": "Neutral-line current channel negative differential input. Max differential voltage per pair ±0.7V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2202132000_BL-Shanghai-Belling-BL6552_C2841007.pdf",
        "pages": 80,
        "sha256": "4b18cbf018c6a304",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 36,
        "described": 36,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bl6552.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          6.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6212c4fd2463ccb7c6ae2c35f5e24c80884153fcaeaf8e86549c0e49087bc8bb",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bl6552-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          6.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6d4b704e5e15198ec2377c3768a4488d61f632d72476f5dbc516a001957e9983",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL Shanghai Belling",
      "Package": "QFN-36-EP(6x6)",
      "Category": "PMIC",
      "Pins": "36"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bl6552"
  ],
  "discovery_pitch": "BL6552 (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",
    "bl6552.kicad_sym",
    "bl6552.kicad_mod",
    "bl6552.glb",
    "bl6552.step",
    "bl6552-etched.step",
    "bl6552.lbr",
    "docs/hero.png",
    "docs/bl6552-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:51:09.258Z"
}