UCC28C57HDR

{
  "slug": "ucc28c57hdr",
  "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": [
    "component",
    "ic",
    "ucc28c57hdr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ucc28c57hdr.kicad_sym",
    "ucc28c57hdr.kicad_mod",
    "ucc28c57hdr.glb",
    "ucc28c57hdr.step",
    "ucc28c57hdr.lbr",
    "docs/hero.png",
    "docs/ucc28c57hdr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ucc28c57hdr-hero.glb",
    "ucc28c57hdr-hero.overlay.json",
    "ucc28c57hdr-etched.glb"
  ],
  "component": {
    "mpn": "UCC28C57HDR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "IC",
    "subcategory": "IC",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ucc28c57h.pdf",
    "parts": {
      "symbol": "ucc28c57hdr.kicad_sym",
      "footprint": "ucc28c57hdr.kicad_mod",
      "model_3d": "ucc28c57hdr-hero.glb",
      "model_3d_plain": "ucc28c57hdr-etched.glb",
      "model_3d_step": "ucc28c57hdr-etched.step",
      "model_3d_step_plain": "ucc28c57hdr.step",
      "lbr": "ucc28c57hdr.lbr"
    },
    "distributor_links": {
      "lcsc": "C20346043",
      "digikey": "296-UCC28C57HDRTR-ND",
      "mouser": "595-UCC28C57HDR"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T01:19:44Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-UCC28C57HDRTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-UCC28C57HDR",
        "status": "found"
      }
    },
    "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 lets the user command zero duty cycle by externally forcing COMP to GND."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Inverting input of the error amplifier, whose noninverting reference is internally trimmed to 2.5 V ±1%, used to close the voltage-feedback loop for stability."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Primary-side current-sense input to the PWM comparator that terminates OUT conduction when it reaches the error-amplifier-derived threshold, connected to the current-sense resistor."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "bidirectional",
        "description": "Oscillator set point where timing resistor RRT connects to VREF and timing capacitor CCT connects to GND; on the UCC28C57H the switching frequency is one-half of fOSC."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return pin for the output driver stage and the logic-level controller section, to which all device voltages are referenced."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "Totem-pole drive output for directly driving a MOSFET with up to 1 A peak source and sink; on the UCC28C57H it switches at one-half the oscillator frequency, limiting maximum duty cycle to below 50%, and it is held low when VDD is below the turn-on threshold."
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Analog controller bias supply input with an absolute maximum of 30 V, requiring a bypass capacitor of typically 0.1 µF connected directly to GND with minimal trace length."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "5-V reference output (±1% tolerance for the UCC28C5x family) that requires a ceramic bypass of at least 0.1 µF to GND placed close to the pin and must not have external voltages above the specified VREF superimposed on it."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "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: The datasheet table marks VDD as type I and VREF as type O. The KiCad classes power_in (VDD) and pow; The datasheet table marks RT/CT as I/O. It is recorded as bidirectional, which matches that designat"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0849,
        "at": "2026-10-21T01:17:01"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ucc28c57h.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
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ucc28c57hdr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7b6586db58fefb6edf6bbb62d08c0a3479c5ec8be090b522a4a45c27a08c86b0",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}