UC2875DWPTR

{
  "slug": "uc2875dwptr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments AC-DC Controllers And Regulators, SOIC-28-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "uc2875dwptr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "uc2875dwptr.kicad_sym",
    "uc2875dwptr.kicad_mod",
    "uc2875dwptr.glb",
    "uc2875dwptr.step",
    "uc2875dwptr.lbr",
    "docs/hero.png",
    "docs/uc2875dwptr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "uc2875dwptr-hero.glb",
    "uc2875dwptr-hero.overlay.json"
  ],
  "component": {
    "mpn": "UC2875DWPTR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-28-300mil",
    "pin_count": 28,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/uc2875",
    "parts": {
      "symbol": "uc2875dwptr.kicad_sym",
      "footprint": "uc2875dwptr.kicad_mod",
      "model_3d": "uc2875dwptr-hero.glb",
      "model_3d_plain": "uc2875dwptr.glb",
      "model_3d_step": "uc2875dwptr-etched.step",
      "model_3d_step_plain": "uc2875dwptr.step",
      "lbr": "uc2875dwptr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2868119",
      "digikey": "UC2875DWPTR-ND",
      "mouser": "595-UC2875DWPTR"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T07:25:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "UC2875DWPTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UC2875DWPTR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VREF",
        "type": "power_out",
        "description": "Accurate 5V reference output delivering about 60mA, short-circuit limited, disabled in UVLO, bypass with a 0.1µF low-ESR capacitor to GND."
      },
      {
        "number": "2",
        "name": "E/AOUT",
        "type": "output",
        "description": "Error amplifier output and gain stage for overall feedback control; levels below 1V force 0° phase shift."
      },
      {
        "number": "3",
        "name": "EA-",
        "type": "input",
        "description": "Error amplifier inverting input, normally connected to the divider sensing the power supply output voltage."
      },
      {
        "number": "4",
        "name": "EA+",
        "type": "input",
        "description": "Error amplifier non-inverting input, normally connected to a reference voltage for comparison with the sensed output level."
      },
      {
        "number": "5",
        "name": "CS+",
        "type": "input",
        "description": "Non-inverting input of the current-fault comparator with internal 2.5V reference; exceeding 2.5V latches outputs off and starts a soft-start cycle."
      },
      {
        "number": "6",
        "name": "SOFTSTART",
        "type": "output",
        "description": "Soft-start pin held at GND while VIN is below UVLO, then pulled up to about 4.8V by an internal 9µA source."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground, reference for all voltages."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground, reference for all voltages."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground, reference for all voltages."
      },
      {
        "number": "10",
        "name": "DELAYSET C-D",
        "type": "input",
        "description": "Programmed current from this pin to GND sets the turn-on delay for the C-D output pair."
      },
      {
        "number": "11",
        "name": "N/C",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "12",
        "name": "OUTD",
        "type": "output",
        "description": "2A totem-pole output D, part of the C-D pair driving the second half-bridge phase-shifted from A-B."
      },
      {
        "number": "13",
        "name": "OUTC",
        "type": "output",
        "description": "2A totem-pole output C, part of the C-D pair driving the second half-bridge phase-shifted from A-B."
      },
      {
        "number": "14",
        "name": "VC",
        "type": "power_in",
        "description": "Supply for the output drivers; connect to a stable source above 3V (above 12V for best performance), bypassed to PWRGND."
      },
      {
        "number": "15",
        "name": "VIN",
        "type": "power_in",
        "description": "Primary chip supply for logic and analog circuitry; connect to a stable source above 12V, inactive until VIN exceeds the UVLO threshold, bypass to GND."
      },
      {
        "number": "16",
        "name": "PWRGND",
        "type": "power_in",
        "description": "Power ground for the output drivers; bypass VC to it with a ceramic capacitor, may be joined to signal ground at a single point."
      },
      {
        "number": "17",
        "name": "OUTB",
        "type": "output",
        "description": "2A totem-pole output B, part of the A-B pair driving one half-bridge synchronized with the clock."
      },
      {
        "number": "18",
        "name": "OUTA",
        "type": "output",
        "description": "2A totem-pole output A, part of the A-B pair driving one half-bridge synchronized with the clock."
      },
      {
        "number": "19",
        "name": "N/C",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "20",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground, reference for all voltages."
      },
      {
        "number": "21",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground, reference for all voltages."
      },
      {
        "number": "22",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground, reference for all voltages."
      },
      {
        "number": "23",
        "name": "DELAYSET A-B",
        "type": "input",
        "description": "Programmed current from this pin to GND sets the turn-on delay for the A-B output pair."
      },
      {
        "number": "24",
        "name": "FREQSET",
        "type": "passive",
        "description": "A resistor and capacitor from this pin to GND set the oscillator frequency."
      },
      {
        "number": "25",
        "name": "CLOCKSYNC",
        "type": "bidirectional",
        "description": "Outputs a clock signal or accepts a synchronization input higher in frequency than the local oscillator."
      },
      {
        "number": "26",
        "name": "SLOPE",
        "type": "passive",
        "description": "A resistor from this pin to VCC sets the current used to generate the ramp, giving slope compensation or voltage feed-forward."
      },
      {
        "number": "27",
        "name": "RAMP",
        "type": "input",
        "description": "Input to the PWM comparator; connect a capacitor to GND, with 1.3V offset between ramp input and PWM comparator."
      },
      {
        "number": "28",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground, reference for all voltages."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Datasheet describes GND once for all GND pins; description reused for each of the six-plus GND pins.; N/C pins labelled only in the connection diagram; the 28-pin SOIC diagram is shared across UC1875/6/",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 12,
        "cost_usd": 0.4186,
        "at": "2026-10-07T07:25:08"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/uc2875",
        "pages": 23,
        "sha256": "4544bfc895c90421",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b889a13dbe9ec59e79fa9f1b5118b00bfa54f9582392335ff3365b64afc264b1",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uc2875dwptr-etched.step",
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        "sha256": "f2c9e75d69828770890592e5f525034706b38a36a427922b6106a925d7fc868e",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}