XL1583E1

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  "type": "component",
  "slug": "xl1583e1",
  "title": "XL1583E1",
  "brief": "XLSEMI DC-DC Converters, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
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    "mpn": "XL1583E1",
    "manufacturer": "XLSEMI",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
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    "distributor_links": {
      "lcsc": "C74196"
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    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect. Not internally bonded; leave floating or tie to ground for mechanical stability."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply voltage input. Operates from 3.6V to 28V DC (absolute max 32V). Bypass to GND with a suitably large low-ESR capacitor (typ. 220uF/35V) placed close to the pin to eliminate input noise."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "output",
        "description": "Power switch output node. Internal high-side MOSFET (~43mOhm) switches this pin between VIN and GND at 380 kHz; connects to the external inductor and catch Schottky diode of the buck converter. Current limit is typically 4.7A."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the IC. Route outside the Schottky diode-to-output-capacitor ground path to prevent switching current spikes from injecting noise into the device."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback input. Compares the divided output voltage against the internal 1.222V reference to regulate VOUT via an external resistor divider: VOUT = 1.222 * (1 + R2/R1)."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect. Not internally bonded; leave floating or tie to ground for mechanical stability."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Enable input with hysteresis. Drive high (>=1.4V typ.) to turn the regulator on; drive low (<=0.8V typ.) to shut down (Is ~60uA). Floating defaults high. Absolute max VEN = VIN."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect. Not internally bonded; leave floating or tie to ground for mechanical stability."
      }
    ],
    "provenance": {
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        "pages": 10,
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      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    "pin1": {
      "pad": "1",
      "at": [
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        -1.905
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      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "XLSEMI",
      "Package": "SOIC-8",
      "Category": "PMIC",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
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        {
          "name": "Feedback Voltage",
          "symbol": "VFB",
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          "typ": 1.222,
          "max": 1.258,
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        {
          "name": "Input operation voltage",
          "symbol": "Vin",
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          "typ": null,
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        },
        {
          "name": "Oscillator Frequency",
          "symbol": "Fosc",
          "kind": "electrical",
          "unit": "Khz",
          "min": 323,
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          "name": "EN Pin Threshold, High (Regulator ON)",
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          "name": "EN Pin Threshold, Low (Regulator OFF)",
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        },
        {
          "name": "Shutdown Supply Current",
          "symbol": "IS",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 60,
          "max": 200,
          "conditions": "VEN=0V",
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        },
        {
          "name": "Quiescent Supply Current",
          "symbol": "Iq",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3,
          "max": 5,
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        {
          "name": "Switch Current Limit",
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        {
          "name": "EN Pin Input Leakage Current (ON)",
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          "max": 15,
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        {
          "name": "EN Pin Input Leakage Current (OFF)",
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        },
        {
          "name": "Max. Duty Cycle",
          "symbol": "DMAX",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "VFB=0V",
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        },
        {
          "name": "Input Voltage (absolute maximum range)",
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          "typ": null,
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          "conditions": "",
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        },
        {
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          "name": "Output Switch Pin Voltage (upper limit Vin)",
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        {
          "name": "Thermal Resistance (SOP8), Junction to Ambient, No Heatsink, Free Air",
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          "name": "ESD (HBM)",
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  "updated_at": "2026-09-25T14:29:09.838Z"
}