CAT4109V-GT2

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  "slug": "cat4109v-gt2",
  "title": "CAT4109V-GT2",
  "brief": "onsemi LED Drivers, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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    "led drivers",
    "cat4109v-gt2",
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  "component": {
    "mpn": "CAT4109V-GT2",
    "manufacturer": "onsemi",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "LED Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589784647732396032",
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    "distributor_links": {
      "lcsc": "C5118877"
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    "distributor_check": {
      "checked_at": "2026-10-17T16:26:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
        "pn": null,
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    },
    "pins": [
      {
        "number": "1",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground reference pin that must be connected to the GND pin and to the PCB ground plane."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the entire device that must be connected to the PCB ground plane, and RSET resistors should be connected directly to it."
      },
      {
        "number": "3",
        "name": "PWM3",
        "type": "input",
        "description": "PWM control input for LED3 that must be driven high or low and never left open; logic high requires at least 0.7 x VDD and logic low at most 0.3 x VDD."
      },
      {
        "number": "4",
        "name": "PWM2",
        "type": "input",
        "description": "PWM control input for LED2 that must be driven high or low and never left open; logic high requires at least 0.7 x VDD and logic low at most 0.3 x VDD."
      },
      {
        "number": "5",
        "name": "PWM1",
        "type": "input",
        "description": "PWM control input for LED1 that must be driven high or low and never left open; logic high requires at least 0.7 x VDD and logic low at most 0.3 x VDD."
      },
      {
        "number": "6",
        "name": "RSET3",
        "type": "passive",
        "description": "LED3 current-set pin regulated at 1.2 V (1.17 V to 1.23 V), whose current is mirrored to LED3 with a gain of 400."
      },
      {
        "number": "7",
        "name": "RSET2",
        "type": "passive",
        "description": "LED2 current-set pin regulated at 1.2 V (1.17 V to 1.23 V), whose current is mirrored to LED2 with a gain of 400."
      },
      {
        "number": "8",
        "name": "RSET1",
        "type": "passive",
        "description": "LED1 current-set pin regulated at 1.2 V (1.17 V to 1.23 V), whose current is mirrored to LED1 with a gain of 400."
      },
      {
        "number": "9",
        "name": "LED3",
        "type": "output",
        "description": "LED channel 3 current-sink cathode terminal that requires more than 0.4 V on the pin for correct operation and withstands up to 25 V."
      },
      {
        "number": "10",
        "name": "LED2",
        "type": "output",
        "description": "LED channel 2 current-sink cathode terminal that requires more than 0.4 V on the pin for correct operation and withstands up to 25 V."
      },
      {
        "number": "11",
        "name": "LED1",
        "type": "output",
        "description": "LED channel 1 current-sink cathode terminal that requires more than 0.4 V on the pin for correct operation and withstands up to 25 V."
      },
      {
        "number": "12",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected inside the package."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected inside the package."
      },
      {
        "number": "14",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected inside the package."
      },
      {
        "number": "15",
        "name": "OE",
        "type": "input",
        "description": "Output enable input that turns all LED channels off when low; holding it low longer than tPWRDWN (4 ms typical, 8 ms maximum) enters shutdown, with logic high at least 1.3 V and logic low at most 0.4 V."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply pin for the entire device, operated from 3.0 V to 5.5 V, with a small bypass ceramic capacitor recommended near the device."
      }
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  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOIC-16",
      "Category": "LED Drivers",
      "Pins": "16"
    },
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          "name": "Undervoltage Lockout (UVLO) Threshold",
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