UCC28C45QDRQ1

{
  "slug": "ucc28c45qdrq1",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments AC-DC Controllers And Regulators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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  "component": {
    "mpn": "UCC28C45QDRQ1",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ucc28c45-q1.pdf",
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    "distributor_links": {
      "lcsc": "C702438",
      "digikey": "296-53401-2-ND",
      "mouser": "595-UCC28C45QDRQ1"
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    "distributor_check": {
      "checked_at": "2026-11-05T22:42:26Z",
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        "status": "found"
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    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output for compensation that can both source and sink current, is internally current limited, and can be forced to GND to command zero duty cycle, with COMP sink current rated 10 mA maximum."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Inverting input of the error amplifier, with the noninverting reference internally trimmed to 2.5 V ±1%."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Primary-side current sense input to the PWM comparator, which terminates OUT conduction, with a typical current sense amplifier gain of 3 V/V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "bidirectional",
        "description": "Fixed-frequency oscillator timing pin, with timing resistor from VREF and timing capacitor to GND, where TI recommends 1 kΩ to 100 kΩ resistors and 220 pF to 4.7 nF capacitors."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return pin for the output driver stage and the logic level controller section."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "Totem-pole drive output intended to directly drive a MOSFET, sourcing and sinking up to 1 A peak, actively held low when VDD is below the turn-on threshold, with output driver voltage limited to 20 V absolute maximum."
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Analog controller bias supply input with a 20 V absolute maximum, requiring a bypass capacitor typically 0.1 µF connected directly to GND."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "5-V reference output with ±1% tolerance, requiring a minimum 0.1 µF ceramic bypass to GND placed as close to the pin as possible."
      }
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        "pages": 48,
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        "total": 8,
        "described": 8,
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