BL2556ACB5TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl2556acb5tr",
  "title": "BL2556ACB5TR",
  "brief": "BL Shanghai Belling USB 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",
    "interface",
    "bl2556acb5tr"
  ],
  "component": {
    "mpn": "BL2556ACB5TR",
    "manufacturer": "BL Shanghai Belling",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Interface",
    "subcategory": "USB Converters",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2110272130_BL-Shanghai-Belling-BL2556ACB5TR_C2909512.pdf",
    "parts": {
      "symbol": "bl2556acb5tr.kicad_sym",
      "footprint": "bl2556acb5tr.kicad_mod",
      "model_3d": "bl2556acb5tr-etched.glb",
      "model_3d_plain": "bl2556acb5tr.glb",
      "model_3d_step": "bl2556acb5tr-etched.step",
      "model_3d_step_plain": "bl2556acb5tr.step",
      "lbr": "bl2556acb5tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2909512"
    },
    "pins": [
      {
        "number": "1",
        "name": "VOUT",
        "type": "power_out",
        "description": "Switched power output; connects to USB VBUS. Internally connected to VIN through the ~70mΩ high-side power MOSFET when the switch is enabled. Has an internal pull-down to discharge the output cap when the switch is off."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference."
      },
      {
        "number": "3",
        "name": "RSET",
        "type": "passive",
        "description": "Current-limit threshold set pin. Connect an external resistor from RSET to GND to program the overcurrent threshold: Ioc = 60kΩ / Rset (typical range 1.7-2.3 A with Rset=30 kΩ). Place resistor as close as possible to the pin."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Chip enable input. On the BL2556ACB5TR (A-suffix) variant this pin is ACTIVE-HIGH: drive above VIH (min 1.6 V) to enable, below VIL (max 0.4 V) to disable. Do not leave floating."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Main supply input, 2.7 V to 5.5 V (abs max 6 V). Bypass with a low-ESR ceramic capacitor (e.g. 4.7 µF) placed close to the pin. UVLO ~2.2 V rising."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2110272130_BL-Shanghai-Belling-BL2556ACB5TR_C2909512.pdf",
        "pages": 8,
        "sha256": "4de4fa25247ef1f7",
        "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"
    },
    "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": [
      {
        "file": "bl2556acb5tr.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": "bl2556acb5tr-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": "486763b36c99fa55adb7d34385921028685255a6b11333dc2f9551567cb3f19a",
        "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": "Interface",
      "Pins": "5"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bl2556acb5tr"
  ],
  "discovery_pitch": "BL2556ACB5TR (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",
    "bl2556acb5tr.kicad_sym",
    "bl2556acb5tr.kicad_mod",
    "bl2556acb5tr.glb",
    "bl2556acb5tr.step",
    "bl2556acb5tr-etched.step",
    "bl2556acb5tr.lbr",
    "docs/hero.png",
    "docs/bl2556acb5tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:49:42.037Z"
}