UC3842DRG

{
  "schema_version": 1,
  "type": "component",
  "slug": "uc3842drg",
  "title": "UC3842DRG",
  "brief": "HANSCHIP semiconductor 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)",
    "uc3842drg",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "UC3842DRG",
    "manufacturer": "HANSCHIP semiconductor",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600485006590418944",
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      "lbr": "uc3842drg.lbr"
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    "distributor_links": {
      "lcsc": "C19723747"
    },
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      "checked_at": "2026-10-18T14:58:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
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    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "This pin is the Error Amplifier output and is made for loop compensation, with a maximum Error Amp output sink current of 10 mA."
      },
      {
        "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, with analog inputs rated from -0.3 V to 5.5 V."
      },
      {
        "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 output switch conduction, with a typical maximum input signal of 1.0 V (0.9 V to 1.1 V) and analog inputs rated from -0.3 V to 5.5 V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "passive",
        "description": "The oscillator frequency and maximum output duty cycle are programmed by connecting resistor RT to Vref and capacitor CT to ground."
      },
      {
        "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 1 A."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "This pin is the positive supply of the integrated circuit, with an absolute maximum supply voltage of 30 V from a low impedance source."
      },
      {
        "number": "8",
        "name": "Vref",
        "type": "power_out",
        "description": "This is the reference output, which provides charging current for capacitor CT through resistor RT, with a typical output voltage of 5.0 V (4.9 V to 5.1 V) at IREF = 1 mA."
      }
    ],
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          "extractor flagged: The datasheet's pin connection diagram for DIP-8/SOP-8 is an image and is not present in the extract; The pin function table lists a single pin named RT/CT. The datasheet describes RT (to Vref) and CT (; The ordering table lists UC3842DRG as SOP-8 with reel packing, so the SOP-8 pinout applies. KiCad ty"
        ],
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        "at": "2026-10-18T14:56:16"
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      "Manufacturer": "HANSCHIP semiconductor",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
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          "name": "Rise Time",
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          "conditions": "TJ = 25℃, CL = 1nF (Note 3)",
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          "conditions": "TJ = 25℃, CL = 1nF (Note 3)",
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          "name": "Start Threshold Voltage (UVLO)",
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          "min": 14.5,
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          "name": "Min. Operating Voltage after Turn On (UVLO)",
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          "name": "Max. Duty Cycle",
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          "min": 95,
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          "name": "Total Standby Current",
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