XL3842

{
  "schema_version": 1,
  "type": "component",
  "slug": "xl3842",
  "title": "XL3842",
  "brief": "XINLUDA AC-DC Controllers And Regulators, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "xl3842",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "XL3842",
    "manufacturer": "XINLUDA",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590166458400468992",
    "parts": {
      "symbol": "xl3842.kicad_sym",
      "footprint": "xl3842.kicad_mod",
      "model_3d": "xl3842-hero.glb",
      "model_3d_plain": "xl3842-etched.glb",
      "model_3d_step": "xl3842-etched.step",
      "model_3d_step_plain": "xl3842.step",
      "lbr": "xl3842.lbr"
    },
    "distributor_links": {
      "lcsc": "C968673"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T03:03:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "This pin is the Error Amplifier output and is made available for loop compensation."
      },
      {
        "number": "2",
        "name": "VFB",
        "type": "input",
        "description": "This is the inverting input of the Error Amplifier, normally connected to the switching power supply output through a resistor divider."
      },
      {
        "number": "3",
        "name": "ISENSE",
        "type": "input",
        "description": "A voltage proportional to inductor current is connected to this input, and the PWM uses it to terminate the output switch conduction."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "passive",
        "description": "Resistor RT connects to Vref and capacitor CT to ground to program the oscillator frequency and maximum output duty cycle, and operation to 500kHz is possible."
      },
      {
        "number": "5",
        "name": "GROUND",
        "type": "power_in",
        "description": "This pin is the combined control circuitry and power ground."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "This output directly drives the gate of a power MOSFET, sourcing and sinking peak currents up to 1A."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "This pin is the positive supply of the control IC, with a recommended supply voltage of 12 to 28 V."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "This is the reference output that provides charging current for capacitor CT through resistor RT."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin types are inferred from the function descriptions to fit KiCad ERC classes. Pin 7 voltage range ; The pin table (page 2) covers the whole XD/XL384x family, not the XL3842 alone. The ordering table o",
          "1/8 pin names appear NOWHERE in the datasheet text: ['5:GROUND@p2']"
        ],
        "pages_sent": 17,
        "cost_usd": 0.0477,
        "at": "2026-10-19T03:01:35"
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        "pages": 17,
        "sha256": "a79edbe66e256697",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
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        "checked": "2026-10-19",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "XINLUDA",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
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        {
          "name": "Error Amplifier Output Sink Current",
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          "unit": "mA",
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        {
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          "name": "Oscillator frequency",
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        {
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        {
          "name": "VREF Line Regulation",
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        {
          "name": "Output Short Circuit",
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        {
          "name": "Initial accuracy",
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          "unit": "KHz",
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        {
          "name": "Frequency Change with Voltage",
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          "kind": "electrical",
          "unit": "%",
          "min": null,
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          "max": 5,
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        {
          "name": "Discharge Current (TJ = 25C)",
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          "kind": "electrical",
          "unit": "mA",
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          "conditions": "VOSC = 2V, TJ = 25°C",
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        {
          "name": "Discharge Current (TA = Tlow to Thigh)",
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        {
          "name": "Error Amp Input Voltage",
          "symbol": "V2",
          "kind": "electrical",
          "unit": "V",
          "min": 2.42,
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          "conditions": "VPIN1 = 2.5V",
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        {
          "name": "Error Amp Input Bias Current",
          "symbol": "Ib",
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          "conditions": "VFB = 5V",
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          "name": "Error Amp Open-Loop Gain",
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        {
          "name": "Unity Gain Bandwidth",
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          "kind": "electrical",
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        {
          "name": "Power Supply Rejection Ratio",
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        {
          "name": "Output Low Level (200mA)",
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          "source": "datasheet"
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          "source": "datasheet"
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          "name": "UVLO Saturation",
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          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.1,
          "max": 1.1,
          "conditions": "VCC = 6V; ISINK = 1mA",
          "source_page": 6,
          "source": "datasheet"
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          "kind": "timing",
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          "conditions": "Tj = 25C CL = 1nF (2)",
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          "symbol": "",
          "kind": "electrical",
          "unit": "V",
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          "source": "datasheet"
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        {
          "name": "Min Operating Voltage After Turn-on (X842/4)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 8.5,
          "typ": 10,
          "max": 11.5,
          "conditions": "X842/4",
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          "source": "datasheet"
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        {
          "name": "Maximum Duty Cycle (X842/3)",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 94,
          "typ": 96,
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          "name": "Start-up Current",
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          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.3,
          "max": 0.5,
          "conditions": "VCC = 14V for X842/44",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Operating Supply Current",
          "symbol": "Ii",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 12,
          "max": 20,
          "conditions": "VPIN2 = VPIN3 = 0V",
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    "email": "[email protected]"
  },
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}