UCC28950PW

{
  "slug": "ucc28950pw",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "ucc28950pw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ucc28950pw.kicad_sym",
    "ucc28950pw.kicad_mod",
    "ucc28950pw.glb",
    "ucc28950pw.step",
    "ucc28950pw.lbr",
    "docs/hero.png",
    "docs/ucc28950pw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ucc28950pw-hero.glb",
    "ucc28950pw-hero.overlay.json"
  ],
  "component": {
    "mpn": "UCC28950PW",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-24",
    "pin_count": 24,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ucc28950.pdf",
    "parts": {
      "symbol": "ucc28950pw.kicad_sym",
      "footprint": "ucc28950pw.kicad_mod",
      "model_3d": "ucc28950pw-hero.glb",
      "model_3d_plain": "ucc28950pw.glb",
      "model_3d_step": "ucc28950pw-etched.step",
      "model_3d_step_plain": "ucc28950pw.step",
      "lbr": "ucc28950pw.lbr"
    },
    "distributor_links": {
      "lcsc": "C1530014",
      "digikey": "296-34760-5-ND",
      "mouser": "595-UCC28950PW"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T14:37:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-34760-5-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-UCC28950PW",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VREF",
        "type": "power_in",
        "description": "Provides a 5 V, ±1.5%, 20 mA reference voltage output."
      },
      {
        "number": "2",
        "name": "EA+",
        "type": "input",
        "description": "Error amplifier noninverting input."
      },
      {
        "number": "3",
        "name": "EA-",
        "type": "input",
        "description": "Error amplifier inverting input."
      },
      {
        "number": "4",
        "name": "COMP",
        "type": "bidirectional",
        "description": "Error amplifier output and input to the PWM comparator."
      },
      {
        "number": "5",
        "name": "SS/EN",
        "type": "input",
        "description": "Sets soft-start programming, device enable and hiccup mode protection circuit."
      },
      {
        "number": "6",
        "name": "DELAB",
        "type": "input",
        "description": "Sets the dead-time delay between OUTA and OUTB."
      },
      {
        "number": "7",
        "name": "DELCD",
        "type": "input",
        "description": "Sets the dead-time delay between OUTC and OUTD."
      },
      {
        "number": "8",
        "name": "DELEF",
        "type": "input",
        "description": "Sets the delay time between OUTA and OUTF, and between OUTB and OUTE."
      },
      {
        "number": "9",
        "name": "TMIN",
        "type": "input",
        "description": "Sets the minimum duty cycle in burst mode."
      },
      {
        "number": "10",
        "name": "RT",
        "type": "input",
        "description": "Sets the oscillator frequency and the leader or follower mode."
      },
      {
        "number": "11",
        "name": "RSUM",
        "type": "input",
        "description": "Sets the slope compensation and selects voltage mode or peak current mode."
      },
      {
        "number": "12",
        "name": "DCM",
        "type": "input",
        "description": "Sets the DCM threshold."
      },
      {
        "number": "13",
        "name": "ADELEF",
        "type": "input",
        "description": "Programs the delay time between primary side and secondary side switches, tAFSET and tBESET."
      },
      {
        "number": "14",
        "name": "ADEL",
        "type": "input",
        "description": "Programs the primary switch dead time over the CS voltage range, tABSET and tCDSET."
      },
      {
        "number": "15",
        "name": "CS",
        "type": "input",
        "description": "Current sense input for cycle-by-cycle overcurrent protection and adaptive delay functions."
      },
      {
        "number": "16",
        "name": "SYNC",
        "type": "bidirectional",
        "description": "Synchronization output from the leader controller to the input of the follower controller."
      },
      {
        "number": "17",
        "name": "OUTF",
        "type": "output",
        "description": "Primary switching output with 0.2 A sink and source capability."
      },
      {
        "number": "18",
        "name": "OUTE",
        "type": "output",
        "description": "Primary switching output with 0.2 A sink and source capability."
      },
      {
        "number": "19",
        "name": "OUTD",
        "type": "output",
        "description": "Primary switching output with 0.2 A sink and source capability."
      },
      {
        "number": "20",
        "name": "OUTC",
        "type": "output",
        "description": "Primary switching output with 0.2 A sink and source capability."
      },
      {
        "number": "21",
        "name": "OUTB",
        "type": "output",
        "description": "Primary switching output with 0.2 A sink and source capability."
      },
      {
        "number": "22",
        "name": "OUTA",
        "type": "output",
        "description": "Primary switching output with 0.2 A sink and source capability."
      },
      {
        "number": "23",
        "name": "VDD",
        "type": "power_in",
        "description": "Bias supply input for the controller."
      },
      {
        "number": "24",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; all signals are referenced to this node."
      }
    ],
    "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 pin table lists VDD (pin 23) as type 'I'. It is classified here as power_in because it; The datasheet covers UCC28950 and UCC28951, and the pinout is shared. The orderable addendum (page 7; Pin descriptions are condensed from the page 3 pin table and keep its section references out of the "
        ],
        "pages_sent": 7,
        "cost_usd": 0.0545,
        "at": "2026-10-08T14:37:31"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ucc28950.pdf",
        "pages": 80,
        "sha256": "a765d09f25ef27f8",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ucc28950pw.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          7.8,
          0.97
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "706322f42d9793ebf28d5b80100a68bfa8769998a00b78acadf7af937fc1454f",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ucc28950pw-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "905dbbff0f2f8f27a374d4f5345e3a9408b217fc7c848879674de8adde89fdf2",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}