AP2138N-2.5TRG1

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  "slug": "ap2138n-2-5trg1",
  "title": "AP2138N-2.5TRG1",
  "brief": "Diodes Incorporated Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
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    "mpn": "AP2138N-2.5TRG1",
    "manufacturer": "Diodes Incorporated",
    "package": "SOT-23-3",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.diodes.com/assets/Datasheets/AP2138N-2.5TRG1.pdf",
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    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the regulator. Connect directly to the system ground plane."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage, fixed 2.5V ±2% (1.5% typ). Supplies up to 250mA. Requires a >1µF ceramic output capacitor (ESR 0.01Ω-100Ω) for stability."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage, 2.5V to 6.0V recommended (6.6V absolute max). Requires a 1µF ceramic input capacitor. Dropout ~700mV at 100mA load."
      }
    ],
    "provenance": {
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      "datasheet": {
        "url": "https://www.diodes.com/assets/Datasheets/AP2138N-2.5TRG1.pdf",
        "pages": 29,
        "sha256": "027e80492a5bc199",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Diodes Incorporated",
      "Package": "SOT-23-3",
      "Category": "PMIC",
      "Pins": "3"
    }
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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  "updated_at": "2026-09-24T16:30:36.014Z"
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