UCD3138RHAT

{
  "slug": "ucd3138rhat",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Supervisor And Reset ICs, VQFN-40-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "ucd3138rhat",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ucd3138rhat.kicad_sym",
    "ucd3138rhat.kicad_mod",
    "ucd3138rhat.glb",
    "ucd3138rhat.step",
    "ucd3138rhat.lbr",
    "docs/hero.png",
    "docs/ucd3138rhat-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ucd3138rhat-hero.glb",
    "ucd3138rhat-hero.overlay.json"
  ],
  "component": {
    "mpn": "UCD3138RHAT",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-40-EP(6x6)",
    "pin_count": 41,
    "category": "Power Management (PMIC)",
    "subcategory": "Supervisor And Reset ICs",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ucd3138",
    "parts": {
      "symbol": "ucd3138rhat.kicad_sym",
      "footprint": "ucd3138rhat.kicad_mod",
      "model_3d": "ucd3138rhat-hero.glb",
      "model_3d_plain": "ucd3138rhat.glb",
      "model_3d_step": "ucd3138rhat-etched.step",
      "model_3d_step_plain": "ucd3138rhat.step",
      "lbr": "ucd3138rhat.lbr"
    },
    "distributor_links": {
      "lcsc": "C2869414",
      "digikey": "296-34781-2-ND",
      "mouser": "595-UCD3138RHAT"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T02:38:16Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-34781-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UCD3138RHAT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for differential error ADC and analog circuitry"
      },
      {
        "number": "2",
        "name": "AD13",
        "type": "input",
        "description": "12-bit ADC channel 13 input; connected to comparator E for current-sharing DAC output selection"
      },
      {
        "number": "3",
        "name": "AD06",
        "type": "input",
        "description": "12-bit ADC channel 6 input; connected to comparator F for DAC output selection"
      },
      {
        "number": "4",
        "name": "AD04",
        "type": "input",
        "description": "12-bit ADC channel 4 input; connected to comparator D for DAC output selection"
      },
      {
        "number": "5",
        "name": "AD03",
        "type": "input",
        "description": "12-bit ADC channel 3 input; connected to comparators B and C for overvoltage/undervoltage protection"
      },
      {
        "number": "6",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground reference for digital circuitry and logic"
      },
      {
        "number": "7",
        "name": "/RESET",
        "type": "input",
        "description": "Device reset input, active-low; device resets when this pin is pulled below threshold"
      },
      {
        "number": "8",
        "name": "ADC_EXT_TRIG",
        "type": "input",
        "description": "External ADC conversion trigger input; multiplexed with TCAP, SYNC, and PWM0 functions"
      },
      {
        "number": "9",
        "name": "PMBUS_CLK",
        "type": "tri_state",
        "description": "Open-drain PMBus/I2C clock line; can be configured as SCI_TX0 UART output"
      },
      {
        "number": "10",
        "name": "PMBUS_DATA",
        "type": "tri_state",
        "description": "Open-drain PMBus/I2C data line; can be configured as SCI_RX0 UART input"
      },
      {
        "number": "11",
        "name": "DPWM0A",
        "type": "output",
        "description": "Digital PWM output 0A with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
      },
      {
        "number": "12",
        "name": "DPWM0B",
        "type": "output",
        "description": "Digital PWM output 0B with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
      },
      {
        "number": "13",
        "name": "DPWM1A",
        "type": "output",
        "description": "Digital PWM output 1A with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
      },
      {
        "number": "14",
        "name": "DPWM1B",
        "type": "output",
        "description": "Digital PWM output 1B with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
      },
      {
        "number": "15",
        "name": "DPWM2A",
        "type": "output",
        "description": "Digital PWM output 2A with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
      },
      {
        "number": "16",
        "name": "DPWM2B",
        "type": "output",
        "description": "Digital PWM output 2B with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
      },
      {
        "number": "17",
        "name": "DPWM3A",
        "type": "output",
        "description": "Digital PWM output 3A with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
      },
      {
        "number": "18",
        "name": "DPWM3B",
        "type": "output",
        "description": "Digital PWM output 3B with 250ps pulse-width resolution; supports up to 2MHz switching frequency"
      },
      {
        "number": "19",
        "name": "PMBUS_ALERT",
        "type": "tri_state",
        "description": "Open-drain PMBus alert signal output; configurable as general-purpose GPIO"
      },
      {
        "number": "20",
        "name": "PMBUS_CTRL",
        "type": "tri_state",
        "description": "Open-drain PMBus control signal line; configurable as general-purpose GPIO"
      },
      {
        "number": "21",
        "name": "TCK",
        "type": "input",
        "description": "JTAG test clock input for debugging or manufacturer test; multiplexed with TCAP, SYNC, and PWM0"
      },
      {
        "number": "22",
        "name": "TDO",
        "type": "output",
        "description": "JTAG test data output for debugging; can be configured as SCI_TX0, PMBUS_ALERT, or FAULT0"
      },
      {
        "number": "23",
        "name": "TDI",
        "type": "input",
        "description": "JTAG test data input for debugging; can be configured as SCI_RX0, PMBUS_CTRL, or FAULT1"
      },
      {
        "number": "24",
        "name": "TMS",
        "type": "input",
        "description": "JTAG test mode select input for debugging or manufacturer test; configurable as GPIO"
      },
      {
        "number": "25",
        "name": "FAULT2",
        "type": "input",
        "description": "External fault input 2; detects external fault conditions for protection"
      },
      {
        "number": "26",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground reference for digital circuitry and logic"
      },
      {
        "number": "27",
        "name": "V33D",
        "type": "power_in",
        "description": "Digital 3.3V core supply input; nominal 3.3V with recommended 4.7µF and 10nF bypass capacitors"
      },
      {
        "number": "28",
        "name": "BP18",
        "type": "power_in",
        "description": "1.8V bypass pin for internal regulator; requires 1µF and 10nF bypass capacitors to ground"
      },
      {
        "number": "29",
        "name": "AGND",
        "type": "power_in",
        "description": "Substrate analog ground reference; connected to internal silicon substrate"
      },
      {
        "number": "30",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for differential error ADC and analog circuitry"
      },
      {
        "number": "31",
        "name": "EAP0",
        "type": "input",
        "description": "Error ADC channel 0 positive input; positive terminal of differential feedback measurement for loop 0"
      },
      {
        "number": "32",
        "name": "EAN0",
        "type": "input",
        "description": "Error ADC channel 0 negative input; negative terminal of differential feedback measurement for loop 0"
      },
      {
        "number": "33",
        "name": "EAP1",
        "type": "input",
        "description": "Error ADC channel 1 positive input; positive terminal of differential feedback measurement for loop 1"
      },
      {
        "number": "34",
        "name": "EAN1",
        "type": "input",
        "description": "Error ADC channel 1 negative input; negative terminal of differential feedback measurement for loop 1"
      },
      {
        "number": "35",
        "name": "EAP2",
        "type": "input",
        "description": "Error ADC channel 2 positive input; recommended for peak current mode control applications; positive terminal of differential measurement for loop 2"
      },
      {
        "number": "36",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground reference for differential error ADC and analog circuitry"
      },
      {
        "number": "37",
        "name": "V33A",
        "type": "power_in",
        "description": "Analog 3.3V supply input; powers analog circuitry with internal regulator; requires 4.7µF and 10nF bypass capacitors"
      },
      {
        "number": "38",
        "name": "AD00",
        "type": "input",
        "description": "12-bit ADC channel 0 input; connected to internal current source for PMBus address detection"
      },
      {
        "number": "39",
        "name": "AD01",
        "type": "input",
        "description": "12-bit ADC channel 1 input; connected to internal current source for PMBus address detection"
      },
      {
        "number": "40",
        "name": "AD02",
        "type": "input",
        "description": "12-bit ADC channel 2 input; connected to comparator A for current-sharing bus monitoring"
      },
      {
        "number": "41",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "exposed pad 41 added from the footprint"
        ],
        "pages_sent": 34,
        "cost_usd": 0.2637,
        "at": "2026-10-07T02:37:51"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ucd3138",
        "pages": 102,
        "sha256": "5ebcb7f0fa3d9854",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 41,
        "described": 41,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ucd3138rhat.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          6.0,
          1.0
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e5b4286c2329085d9ef7f90d5eb5bf41a435241ecc1baaf1383823b6d6a946ae",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ucd3138rhat-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "sha256": "42e68a76b14d374967ef488ebb34c07ceb10fd95dffb5f5927ba38c94d7008b3",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}