main
Ray Publish 0.2.3 c9bbba0
{
  "slug": "ld1117-3-3",
  "version": "0.2.3",
  "type": "component",
  "description": "UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
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    "pmic",
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          "kind": "recommended_operating",
          "name": "Input capacitance",
          "symbol": "CIN",
          "min": null,
          "typ": null,
          "max": null,
          "unit": "uF",
          "conditions": "typical application circuit (p.7): 10uF polarised on VIN; \"The circuit and parameters are reference only\"; no written input condition",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "kind": "recommended_operating",
          "name": "Output capacitance",
          "symbol": "COUT",
          "min": null,
          "typ": null,
          "max": null,
          "unit": "uF",
          "conditions": "p.6: \"The LD1117 requires an output capacitor for device stability. Its value of 22uF tantalum covers all cases of bypassing the adjustment terminal. Without bypassing the adjustment terminal smaller capacitors can be used\"; application circuit 22uF (p.7)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "kind": "recommended_operating",
          "name": "Output capacitor ESR",
          "symbol": "ESR",
          "min": null,
          "typ": null,
          "max": null,
          "unit": "ohm",
          "conditions": "datasheet states no output capacitor ESR condition",
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          "source": "datasheet",
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          "unit": "V",
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  "component": {
    "mpn": "LD1117-3.3",
    "manufacturer": "UMW",
    "package": "SOT-223",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
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    "distributor_links": {
      "lcsc": "C347229"
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    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the fixed-output LD1117-3.3 variant. On the shared die this pin is the ADJ/GND pad (adjustable variants use it as the ADJ feedback node); for the fixed 3.3V part it must be tied to system ground."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated 3.3V output (3.234V min / 3.300V typ / 3.366V max at Iout=10mA, Vin=5V, Tj=25°C). Delivers up to 1A. Requires an output capacitor for stability; a 22µF tantalum is recommended."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated input supply. Recommended operating range up to 12V, absolute maximum 18V. Typical dropout is 1.2V at 1A load. A 10µF input capacitor is recommended."
      }
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        "described": 3,
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        "refuses_to_fabricate": true
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    "pin1": {
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      "at": [
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        -2.3
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      "corner": "top-left",
      "source": "silk-marker",
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      "mark": "drawn"
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  },
  "title": "LD1117-3.3",
  "brief": "UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "discovery_triggers": [
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  "visibility": "public"
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