BL9161G-18BARN

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl9161g-18barn",
  "title": "BL9161G-18BARN",
  "brief": "BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, 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",
    "bl9161g-18barn"
  ],
  "component": {
    "mpn": "BL9161G-18BARN",
    "manufacturer": "BL Shanghai Belling",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2201121330_BL-Shanghai-Belling-BL9161G-18BARN_C2927422.pdf",
    "parts": {
      "symbol": "bl9161g-18barn.kicad_sym",
      "footprint": "bl9161g-18barn.kicad_mod",
      "model_3d": "bl9161g-18barn-etched.glb",
      "model_3d_plain": "bl9161g-18barn.glb",
      "model_3d_step": "bl9161g-18barn-etched.step",
      "model_3d_step_plain": "bl9161g-18barn.step",
      "lbr": "bl9161g-18barn.lbr"
    },
    "distributor_links": {
      "lcsc": "C2927422"
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input voltage. Operating range 2.2V to 6V (absolute max 6V). Bypass with a 1µF ceramic capacitor to GND placed close to the pin."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference for the regulator and internal control circuitry."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Chip enable input, active high. Drive above VIH=1.2V to enable the regulator; pull below VIL=0.4V (or leave floating) to enter shutdown. This pin has an internal pull-down resistor (A-suffix ordering option), so the LDO defaults to shutdown when EN is left open."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating or tie to GND for mechanical strength."
      },
      {
        "number": "5",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage, fixed 1.8V ±2% (18B suffix). Delivers up to 300mA with 205mV typical dropout at 300mA. Requires a ≥2.2µF ceramic output capacitor for 1.8V-option stability (per application hint)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2201121330_BL-Shanghai-Belling-BL9161G-18BARN_C2927422.pdf",
        "pages": 12,
        "sha256": "74f47540de0b9365",
        "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": "bl9161g-18barn.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": "bl9161g-18barn-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": "b52dea83b8187977411c5446b14526a4928487de7236b596798f8205117f42d2",
        "checked": "2026-10-26",
        "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"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bl9161g-18barn"
  ],
  "discovery_pitch": "BL9161G-18BARN (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",
    "bl9161g-18barn.kicad_sym",
    "bl9161g-18barn.kicad_mod",
    "bl9161g-18barn.glb",
    "bl9161g-18barn.step",
    "bl9161g-18barn-etched.step",
    "bl9161g-18barn.lbr",
    "docs/hero.png",
    "docs/bl9161g-18barn-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:57:12.019Z"
}