UCC28C57LDR

{
  "slug": "ucc28c57ldr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments , SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "ic",
    "ucc28c57ldr",
    "factory-2.0.0",
    "extractor-text"
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  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "README.md",
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    "ucc28c57ldr.kicad_mod",
    "ucc28c57ldr.glb",
    "ucc28c57ldr.step",
    "ucc28c57ldr.lbr",
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    "docs/ucc28c57ldr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
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    "ucc28c57ldr-hero.overlay.json",
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  "component": {
    "mpn": "UCC28C57LDR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "IC",
    "subcategory": "IC",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ucc28c57l.pdf",
    "parts": {
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      "footprint": "ucc28c57ldr.kicad_mod",
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      "lbr": "ucc28c57ldr.lbr"
    },
    "distributor_links": {
      "lcsc": "C20346045"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T22:43:22Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 902 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output for loop compensation, internally current limited so zero duty cycle can be commanded by forcing COMP to GND."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Inverting input of the error amplifier used for the voltage-feedback loop, with the noninverting input internally trimmed to 2.5 V ±1%."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Primary-side current sense input to the PWM comparator, connected to the current sensing resistor, which terminates OUT conduction."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "bidirectional",
        "description": "Oscillator set point: timing resistor to VREF and timing capacitor to GND set the switching frequency (OUT is half of oscillator frequency on UCC28C57)."
      },
      {
        "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": "Gate drive output sourcing and sinking up to 1 A peak, actively held low when VDD is below the turn-on threshold, with duty cycle limited to <50% on UCC28C57."
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Controller bias supply input, absolute maximum 30 V, requiring a 0.1 µF bypass capacitor to GND."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "5-V reference output requiring at least 0.1 µF ceramic bypass to GND, with 55 mA maximum short-circuit current."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 13,
        "cost_usd": 0.1614,
        "at": "2026-10-22T22:43:12"
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      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ucc28c57l.pdf",
        "pages": 58,
        "sha256": "d9b2cab289f0aa82",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
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}