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Ray Set visibility: public 7041224 5d ago
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{
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  "type": "component",
  "slug": "ucc21738qdwrq1",
  "title": "UCC21738QDWRQ1",
  "brief": "Texas Instruments Isolators - Gate Drivers, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management (pmic)",
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  "component": {
    "mpn": "UCC21738QDWRQ1",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Power Management (PMIC)",
    "subcategory": "Isolators - Gate Drivers",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ucc21738-q1.pdf?ts=1704294192548&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FUCC21738-Q1",
    "parts": {
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      "footprint": "ucc21738qdwrq1.kicad_mod",
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      "model_3d_plain": "ucc21738qdwrq1-etched.glb",
      "model_3d_step": "ucc21738qdwrq1-etched.step",
      "model_3d_step_plain": "ucc21738qdwrq1.step",
      "lbr": "ucc21738qdwrq1.lbr"
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    "distributor_links": {
      "lcsc": "C22445590",
      "digikey": "296-UCC21738QDWRQ1TR-ND",
      "mouser": "595-UCC21738QDWRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-11-02T16:44:20Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-UCC21738QDWRQ1TR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-UCC21738QDWRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "ASC",
        "type": "input",
        "description": "Active high input that enables the active short circuit function to force the output high during system failure events; tie to COM if unused."
      },
      {
        "number": "2",
        "name": "OC",
        "type": "input",
        "description": "Overcurrent detection input for SenseFET, DESAT, and shunt resistor sensing; tie to COM if unused."
      },
      {
        "number": "3",
        "name": "COM",
        "type": "power_in",
        "description": "Common ground reference that connects to the emitter pin for IGBT or the source pin for SiC MOSFET."
      },
      {
        "number": "4",
        "name": "OUTH",
        "type": "output",
        "description": "Gate driver pull-up output."
      },
      {
        "number": "5",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive gate drive supply rail, to be bypassed with a >10-µF capacitor to COM placed close to the pin to support the specified source peak current."
      },
      {
        "number": "6",
        "name": "OUTL",
        "type": "output",
        "description": "Gate driver pull-down output."
      },
      {
        "number": "7",
        "name": "CLMPE",
        "type": "output",
        "description": "External active Miller clamp control that connects to the gate of the external Miller clamp MOSFET; leave floating if unused."
      },
      {
        "number": "8",
        "name": "VEE",
        "type": "power_in",
        "description": "Negative gate drive supply rail, to be bypassed with a >10-µF capacitor to COM placed close to the pin to support the specified sink peak current."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Input power supply and logic ground reference."
      },
      {
        "number": "10",
        "name": "IN+",
        "type": "input",
        "description": "Noninverting gate driver control input; tie to VCC if unused."
      },
      {
        "number": "11",
        "name": "IN-",
        "type": "input",
        "description": "Inverting gate driver control input; tie to GND if unused."
      },
      {
        "number": "12",
        "name": "RDY",
        "type": "output",
        "description": "Open-drain power-good output for VCC-GND and VDD-COM that can be paralleled with other RDY signals."
      },
      {
        "number": "13",
        "name": "FLT",
        "type": "output",
        "description": "Open-drain active-low fault alarm output asserted upon overcurrent or short circuit that can be paralleled with other faults."
      },
      {
        "number": "14",
        "name": "RST/EN",
        "type": "input",
        "description": "Enables or shuts down the output side (regular turn-off when set low) and resets an OC condition on FLT when held low for more than 1000 ns; tie to IN+ for automatic reset."
      },
      {
        "number": "15",
        "name": "VCC",
        "type": "power_in",
        "description": "Input power supply from 3 V to 5.5 V, to be bypassed with a >1-µF capacitor to GND placed close to the pin."
      },
      {
        "number": "16",
        "name": "APWM",
        "type": "output",
        "description": "Isolated PWM output that monitors the ASC pin status; leave floating if unused."
      }
    ],
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        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 11,
        "cost_usd": 0.0193,
        "at": "2026-11-02T16:44:08"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ucc21738-q1.pdf?ts=1704294192548&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FUCC21738-Q1",
        "pages": 53,
        "sha256": "86319bfd941feb0e",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    },
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        "role": "plain",
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        "seat": "z = 0",
        "extents_mm": [
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        "footprint_binding": "identity",
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        "checked": "2026-11-02",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-16",
      "Category": "Power Management (PMIC)",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "86319bfd941feb0e111ce354c8d2600814c999afcd12f279296706bd283c1bc2",
      "rows": [
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          "name": "VCC supply voltage (VCC - GND)",
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          "kind": "absolute_maximum",
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          "typ": null,
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          "conditions": "Reference to VEE",
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          "min": -65,
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        {
          "name": "VCC supply voltage (VCC - GND)",
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        {
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          "conditions": "VDD-COM",
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        {
          "name": "VEE supply voltage (VEE - COM)",
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          "kind": "recommended_operating",
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          "min": -16,
          "typ": null,
          "max": 0,
          "conditions": "VEE-COM",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "VMAX voltage (VDD - VEE)",
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          "conditions": "VDD-VEE",
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        {
          "name": "ASC input voltage",
          "symbol": "ASC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 5,
          "conditions": "Reference to COM",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum RST/EN pulse width to reset fault",
          "symbol": "tRST/EN",
          "kind": "recommended_operating",
          "unit": "ns",
          "min": 1000,
          "typ": null,
          "max": null,
          "conditions": "Minimum pulse width that reset the fault",
          "source_page": 4,
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        {
          "name": "VCC UVLO on threshold",
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          "min": 2.55,
          "typ": 2.7,
          "max": 2.85,
          "conditions": "VCC - GND",
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        {
          "name": "VCC UVLO off threshold",
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          "min": 2.35,
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        {
          "name": "VCC quiescent current",
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          "kind": "electrical",
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          "min": 2.5,
          "typ": 3,
          "max": 4,
          "conditions": "OUT(H) = High, fS = 0Hz",
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          "kind": "electrical",
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          "min": 1.45,
          "typ": 2,
          "max": 2.75,
          "conditions": "OUT(L) = Low, fS = 0Hz",
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        {
          "name": "VDD quiescent current",
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          "max": 5.3,
          "conditions": "OUT(H) = High, fS = 0Hz",
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          "kind": "electrical",
          "unit": "mA",
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          "typ": 2.9,
          "max": 4.7,
          "conditions": "OUT(L) = Low, fS = 0Hz",
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        {
          "name": "IN+, IN- and RST/EN deglitch filter time (ON and OFF)",
          "symbol": "TINFIL",
          "kind": "electrical",
          "unit": "ns",
          "min": 28,
          "typ": 40,
          "max": 60,
          "conditions": "fS = 50kHz",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Deglitch filter time to reset FLT",
          "symbol": "TRSTFIL",
          "kind": "electrical",
          "unit": "ns",
          "min": 500,
          "typ": 650,
          "max": 800,
          "conditions": "",
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        },
        {
          "name": "Output active pull down on OUTL",
          "symbol": "VOUTPD",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": 2,
          "max": 2.5,
          "conditions": "IOUTL(typ) = 0.1×IOUTL(typ), VDD=OPEN, VEE=COM",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Miller clamp threshold voltage",
          "symbol": "VCLMPTH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": 2,
          "max": 2.5,
          "conditions": "Reference to VEE",
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        },
        {
          "name": "Miller clamp output high voltage",
          "symbol": "VCLMPE",
          "kind": "electrical",
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          "min": 4.8,
          "typ": 5,
          "max": 5.3,
          "conditions": "",
          "source_page": 8,
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        {
          "name": "Peak clamp sink current",
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          "kind": "electrical",
          "unit": "A",
          "min": 0.12,
          "typ": 0.25,
          "max": 0.37,
          "conditions": "",
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        {
          "name": "OC detection threshold",
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          "unit": "V",
          "min": 0.63,
          "typ": 0.7,
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          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "OC fault deglitch filter",
          "symbol": "tOCFIL",
          "kind": "electrical",
          "unit": "ns",
          "min": 95,
          "typ": 120,
          "max": 180,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "OC propagation delay to OUTL 90%",
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          "unit": "ns",
          "min": 150,
          "typ": 270,
          "max": 400,
          "conditions": "",
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          "source": "datasheet"
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        {
          "name": "OC to FLT low delay",
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          "kind": "electrical",
          "unit": "ns",
          "min": 300,
          "typ": 530,
          "max": 750,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Soft turn-off current on fault condition",
          "symbol": "ISTO",
          "kind": "electrical",
          "unit": "mA",
          "min": 500,
          "typ": 900,
          "max": 1200,
          "conditions": "VDD-VEE = 20 V, OUTL = 8 V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "ASC input low threshold",
          "symbol": "VASCL",
          "kind": "electrical",
          "unit": "V",
          "min": 1.35,
          "typ": 1.5,
          "max": 1.71,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "ASC input high threshold",
          "symbol": "VASCH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.7,
          "typ": 2.9,
          "max": 3.17,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
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