UCC28950TPWRQ1

{
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  "type": "component",
  "slug": "ucc28950tpwrq1",
  "title": "UCC28950TPWRQ1",
  "brief": "Texas Instruments DC-DC Converters, TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "ucc28950tpwrq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "UCC28950TPWRQ1",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-24",
    "pin_count": 24,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ucc28950-q1",
    "parts": {
      "symbol": "ucc28950tpwrq1.kicad_sym",
      "footprint": "ucc28950tpwrq1.kicad_mod",
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      "model_3d_plain": "ucc28950tpwrq1.glb",
      "model_3d_step": "ucc28950tpwrq1-etched.step",
      "model_3d_step_plain": "ucc28950tpwrq1.step",
      "lbr": "ucc28950tpwrq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C2658720",
      "digikey": "296-28420-2-ND",
      "mouser": "595-UCC28950TPWRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T15:50:33Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-28420-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UCC28950TPWRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VREF",
        "type": "power_out",
        "description": "Provides a 5 V reference output with ±1.5% accuracy and up to 20 mA of output current."
      },
      {
        "number": "2",
        "name": "EA+",
        "type": "input",
        "description": "Non-inverting input of the error amplifier."
      },
      {
        "number": "3",
        "name": "EA-",
        "type": "input",
        "description": "Inverting input of the error amplifier."
      },
      {
        "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 timing, enables the device, and configures hiccup-mode protection."
      },
      {
        "number": "6",
        "name": "DELAB",
        "type": "input",
        "description": "Programs the dead-time delay between OUTA and OUTB."
      },
      {
        "number": "7",
        "name": "DELCD",
        "type": "input",
        "description": "Programs the dead-time delay between OUTC and OUTD."
      },
      {
        "number": "8",
        "name": "DELEF",
        "type": "input",
        "description": "Programs the delay time between OUTA and OUTF, and between OUTB and OUTE, with a range of 30 ns to 1400 ns."
      },
      {
        "number": "9",
        "name": "TMIN",
        "type": "input",
        "description": "Programs the minimum duty cycle in burst mode, with a range of 100 ns to 800 ns."
      },
      {
        "number": "10",
        "name": "RT",
        "type": "input",
        "description": "Sets the oscillator frequency and selects leader or follower mode."
      },
      {
        "number": "11",
        "name": "RSUM",
        "type": "input",
        "description": "Programs slope compensation and selects voltage-mode or peak-current-mode control."
      },
      {
        "number": "12",
        "name": "DCM",
        "type": "input",
        "description": "Sets the discontinuous conduction mode (DCM) threshold, programmable from 5% to 30% of the CS voltage."
      },
      {
        "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": "Senses current for cycle-by-cycle overcurrent protection and the adaptive delay functions."
      },
      {
        "number": "16",
        "name": "SYNC",
        "type": "bidirectional",
        "description": "Passes the synchronization signal 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; the recommended supply range is 8 V to 17 V, with an absolute maximum of 20 V."
      },
      {
        "number": "24",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference; 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: Pinout taken from the 'Pin Configuration and Functions' table (Pin Functions, pages 3-4), which list; The datasheet covers the UCC28950-Q1 / UCC28951-Q1 family. The orderable addendum (page 74) lists UC; The datasheet types VDD as 'I' and VREF as 'O'. They were mapped to KiCad power_in and power_out bec"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0552,
        "at": "2026-10-08T15:50:09"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ucc28950-q1",
        "pages": 81,
        "sha256": "f87284109bd08aff",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "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": [
          6.4,
          7.8,
          0.97
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "706322f42d9793ebf28d5b80100a68bfa8769998a00b78acadf7af937fc1454f",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ucc28950tpwrq1-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "a6cd0f79d3f7c0c8ecc24920cb5475d782d271669c70c5fe61b7645c84b48ff6",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-24",
      "Category": "Power Management (PMIC)",
      "Pins": "24"
    }
  },
  "variants": [],
  "sections": [
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    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "ucc28950tpwrq1"
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  "discovery_pitch": "UCC28950TPWRQ1 (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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}