BL9161G-25BARN

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  "version": "0.1.2",
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  "description": "BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
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  "metadata": {
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "rows": [
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 2,
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        {
          "name": "Output current",
          "symbol": "IOUT",
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          "unit": "mA",
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  "visibility": "public",
  "component": {
    "mpn": "BL9161G-25BARN",
    "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/2210181830_BL-Shanghai-Belling-BL9161G-25BARN_C3008777.pdf",
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    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input voltage. Operating range 2.2V to 6V (absolute max -0.3V to +6V). Bypass with 1µF ceramic capacitor to GND."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Chip enable pin (active high). VIH ≥ 1.2V enables the regulator; VIL ≤ 0.4V puts device in shutdown (ISTBY = 0.01µA typ). Has internal pull-down resistor (suffix 'A' variant), so may be left floating for shutdown. Absolute max -0.3V to VIN."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection. Leave floating or tie to GND for best mechanical/thermal robustness."
      },
      {
        "number": "5",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage, factory-trimmed to 2.5V ±2%. Delivers up to 300mA with 205mV typical dropout at 300mA. Requires ≥1µF ceramic output capacitor for stability (≥2.2µF recommended for lower-voltage variants)."
      }
    ],
    "provenance": {
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      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "checked": "2026-10-07",
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  "title": "BL9161G-25BARN",
  "brief": "BL Shanghai Belling Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "discovery_triggers": [
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  "discovery_pitch": "BL9161G-25BARN (BL Shanghai Belling) component page with datasheet-verified CAD."
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