UCC35702D

{
  "slug": "ucc35702d",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments AC-DC Controllers And Regulators, SOIC-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "ucc35702d",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "type": "image",
    "path": "docs/hero.png"
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    "ucc35702d.glb",
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    "ucc35702d.lbr",
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    "docs/ucc35702d-datasheet.pdf",
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  "component": {
    "mpn": "UCC35702D",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-14",
    "pin_count": 14,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ucc35702",
    "parts": {
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      "footprint": "ucc35702d.kicad_mod",
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      "model_3d_plain": "ucc35702d.glb",
      "model_3d_step": "ucc35702d-etched.step",
      "model_3d_step_plain": "ucc35702d.step",
      "lbr": "ucc35702d.lbr"
    },
    "distributor_links": {
      "lcsc": "C2864327",
      "digikey": "2156-UCC35702D-TI-ND",
      "mouser": "595-UCC35702D"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T16:33:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-UCC35702D-TI-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-UCC35702D",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COUNT",
        "type": "passive",
        "description": "Fault-count integrating capacitor node to ground; a voltage over 4V initiates a latched soft stop cycle, and a resistor to ground sets the discharge time constant."
      },
      {
        "number": "2",
        "name": "ILIM",
        "type": "input",
        "description": "Pulse-by-pulse current limit input that terminates the PWM pulse above 200mV, and an input above 600mV initiates a latched soft stop cycle; absolute maximum input rating is 6V."
      },
      {
        "number": "3",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin whose internal shunt regulator clamps VDD to about 14V typical at 10mA shunt current; supply current must be limited to less than 20mA when the clamp is active, and the absolute maximum supply voltage is 15V."
      },
      {
        "number": "4",
        "name": "OUT",
        "type": "output",
        "description": "Gate drive output capable of 1A peak current with 10 ohm maximum output resistance; DC output current is limited to +/-180mA absolute maximum."
      },
      {
        "number": "5",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground return for the output driver and its currents, which must connect to GND through a single path on the board."
      },
      {
        "number": "6",
        "name": "VFF",
        "type": "input",
        "description": "Voltage feedforward input connected to the input line through a resistive divider, operational over 0.8V to 3.2V; voltages below 0.6V or above 4.0V initiate a soft stop cycle."
      },
      {
        "number": "7",
        "name": "RT",
        "type": "passive",
        "description": "Timing resistor pin that mirrors VFF over 0.8V to 3.2V and sets the ramp capacitor charge current; the resistor to ground should be between 20k and 200k."
      },
      {
        "number": "8",
        "name": "FB",
        "type": "input",
        "description": "PWM comparator input intended for an optocoupler drive, with 50k typical input impedance and 1.6V to 3.6V typical modulation range; absolute maximum input rating is 6V."
      },
      {
        "number": "9",
        "name": "VSCLAMP",
        "type": "input",
        "description": "Volt-second clamp input compared against the CT ramp to terminate the PWM pulse and set the maximum on-time; absolute maximum input rating is 6V."
      },
      {
        "number": "10",
        "name": "CT",
        "type": "passive",
        "description": "Oscillator and feedforward timing capacitor to ground, producing a sawtooth ramp from GND to VRT."
      },
      {
        "number": "11",
        "name": "SYNC",
        "type": "input",
        "description": "Level-sensitive oscillator sync input with a 1.5V threshold where a high level forces the gate output low and resets the ramp, with an internal 3uA pull-down and absolute maximum input rating of 6V."
      },
      {
        "number": "12",
        "name": "VREF",
        "type": "power_out",
        "description": "5.0V trimmed reference with 2% variation over line, load and temperature, which must be bypassed with at least 0.1uF to ground."
      },
      {
        "number": "13",
        "name": "GND",
        "type": "power_in",
        "description": "Analog ground return for all control circuits, which must be connected directly to PGND on the board."
      },
      {
        "number": "14",
        "name": "SS",
        "type": "passive",
        "description": "Soft start capacitor pin charged to VREF by a nominal 18uA current source after power-up, and discharged at about 500uA during soft stop on High Line or Low Line faults."
      }
    ],
    "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 connection diagram text in the datasheet extraction is scrambled. Pin numbers were assigned by c; Pin types for passive-type nodes (COUNT, RT, CT, SS) are assigned as passive because they are timing"
        ],
        "pages_sent": 23,
        "cost_usd": 0.1077,
        "at": "2026-10-08T16:32:58"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ucc35702",
        "pages": 23,
        "sha256": "458a65b2f0db2226",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "checked": "2026-10-08",
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}