UCD3138RJAT

{
  "slug": "ucd3138rjat",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Power Management - Specialized, VQFN-40-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "ucd3138rjat",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ucd3138rjat.kicad_sym",
    "ucd3138rjat.kicad_mod",
    "ucd3138rjat.glb",
    "ucd3138rjat.step",
    "ucd3138rjat.lbr",
    "docs/hero.png",
    "docs/ucd3138rjat-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ucd3138rjat-hero.glb",
    "ucd3138rjat-hero.overlay.json"
  ],
  "component": {
    "mpn": "UCD3138RJAT",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-40-EP(6x6)",
    "pin_count": 41,
    "category": "Power Management (PMIC)",
    "subcategory": "Power Management - Specialized",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ucd3138",
    "parts": {
      "symbol": "ucd3138rjat.kicad_sym",
      "footprint": "ucd3138rjat.kicad_mod",
      "model_3d": "ucd3138rjat-hero.glb",
      "model_3d_plain": "ucd3138rjat.glb",
      "model_3d_step": "ucd3138rjat-etched.step",
      "model_3d_step_plain": "ucd3138rjat.step",
      "lbr": "ucd3138rjat.lbr"
    },
    "distributor_links": {
      "lcsc": "C2876646",
      "digikey": "296-48804-2-ND",
      "mouser": "595-UCD3138RJAT"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T13:05:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-48804-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UCD3138RJAT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground; the datasheet requires no voltage difference between DGND and AGND (ground difference limited to 0.3 V)."
      },
      {
        "number": "2",
        "name": "AD13",
        "type": "input",
        "description": "12-bit ADC channel 13, also connected to comparator E and the I-share DAC output; input range is limited to the device's 3.8 V absolute maximum rating."
      },
      {
        "number": "3",
        "name": "AD06",
        "type": "input",
        "description": "12-bit ADC channel 6, connected to comparator F and the DAC output."
      },
      {
        "number": "4",
        "name": "AD04",
        "type": "input",
        "description": "12-bit ADC channel 4, connected to comparator D and the DAC output."
      },
      {
        "number": "5",
        "name": "AD03",
        "type": "input",
        "description": "12-bit ADC channel 3, connected to comparators B and C."
      },
      {
        "number": "6",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground; the datasheet recommends a single ground plane (SGND) with no voltage delta between DGND and AGND."
      },
      {
        "number": "7",
        "name": "RESET",
        "type": "input",
        "description": "Device reset input, active low; an RC filter between V33 and RESET can be used to delay release from reset until V33 exceeds 3 V."
      },
      {
        "number": "8",
        "name": "ADC_EXT_TRIG",
        "type": "input",
        "description": "External trigger input for ADC12 conversions; alternate functions are TCAP, SYNC and PWM0, and it can be used as a GPIO."
      },
      {
        "number": "9",
        "name": "PMBUS_CLK",
        "type": "bidirectional",
        "description": "PMBus clock, open-drain; alternate function SCI_TX0."
      },
      {
        "number": "10",
        "name": "PMBUS_DATA",
        "type": "bidirectional",
        "description": "PMBus data, open-drain; alternate function SCI_RX0."
      },
      {
        "number": "11",
        "name": "DPWM0A",
        "type": "output",
        "description": "DPWM channel 0A output, high-resolution PWM with 250 ps pulse-width resolution and switching frequency up to 2 MHz."
      },
      {
        "number": "12",
        "name": "DPWM0B",
        "type": "output",
        "description": "DPWM channel 0B output, high-resolution PWM with 250 ps pulse-width resolution and switching frequency up to 2 MHz."
      },
      {
        "number": "13",
        "name": "DPWM1A",
        "type": "output",
        "description": "DPWM channel 1A output, high-resolution PWM with 250 ps pulse-width resolution and switching frequency up to 2 MHz."
      },
      {
        "number": "14",
        "name": "DPWM1B",
        "type": "output",
        "description": "DPWM channel 1B output, high-resolution PWM with 250 ps pulse-width resolution and switching frequency up to 2 MHz."
      },
      {
        "number": "15",
        "name": "DPWM2A",
        "type": "output",
        "description": "DPWM channel 2A output, high-resolution PWM with 250 ps pulse-width resolution and switching frequency up to 2 MHz."
      },
      {
        "number": "16",
        "name": "DPWM2B",
        "type": "output",
        "description": "DPWM channel 2B output, high-resolution PWM with 250 ps pulse-width resolution and switching frequency up to 2 MHz."
      },
      {
        "number": "17",
        "name": "DPWM3A",
        "type": "output",
        "description": "DPWM channel 3A output, high-resolution PWM with 250 ps pulse-width resolution and switching frequency up to 2 MHz; printed as 'DWPM3A' in the datasheet table."
      },
      {
        "number": "18",
        "name": "DPWM3B",
        "type": "output",
        "description": "DPWM channel 3B output, high-resolution PWM with 250 ps pulse-width resolution and switching frequency up to 2 MHz."
      },
      {
        "number": "19",
        "name": "PMBUS_ALERT",
        "type": "bidirectional",
        "description": "PMBus alert, open-drain."
      },
      {
        "number": "20",
        "name": "PMBUS_CTRL",
        "type": "bidirectional",
        "description": "PMBus control, open-drain."
      },
      {
        "number": "21",
        "name": "TCK",
        "type": "input",
        "description": "JTAG TCK, for debugging or manufacturer test only; alternate functions TCAP, SYNC and PWM0."
      },
      {
        "number": "22",
        "name": "TDO",
        "type": "output",
        "description": "JTAG TDO, for debugging or manufacturer test only; alternate functions SCI_TX0, PMBUS_ALERT and FAULT0."
      },
      {
        "number": "23",
        "name": "TDI",
        "type": "input",
        "description": "JTAG TDI, for debugging or manufacturer test only; alternate functions SCI_RX0, PMBUS_CTRL and FAULT1."
      },
      {
        "number": "24",
        "name": "TMS",
        "type": "input",
        "description": "JTAG TMS, for debugging or manufacturer test only."
      },
      {
        "number": "25",
        "name": "FAULT2",
        "type": "input",
        "description": "External fault input 2."
      },
      {
        "number": "26",
        "name": "DGND",
        "type": "power_in",
        "description": "Digital ground; the datasheet recommends a single ground plane (SGND) with no voltage delta between DGND and AGND."
      },
      {
        "number": "27",
        "name": "V33D",
        "type": "power_in",
        "description": "Digital 3.3 V core supply; recommended operating range 3.0 V to 3.6 V (absolute maximum 3.8 V)."
      },
      {
        "number": "28",
        "name": "BP18",
        "type": "power_out",
        "description": "1.8 V bypass; recommended 1.6 V to 2.0 V, and a 2.2 µF capacitor from V33D to BP18 is required with BP18 not to exceed 1.95 V."
      },
      {
        "number": "29",
        "name": "AGND",
        "type": "power_in",
        "description": "Substrate analog ground."
      },
      {
        "number": "30",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "31",
        "name": "EAP0",
        "type": "input",
        "description": "Channel 0 differential analog voltage positive input to the EADC."
      },
      {
        "number": "32",
        "name": "EAN0",
        "type": "input",
        "description": "Channel 0 differential analog voltage negative input to the EADC."
      },
      {
        "number": "33",
        "name": "EAP1",
        "type": "input",
        "description": "Channel 1 differential analog voltage positive input to the EADC."
      },
      {
        "number": "34",
        "name": "EAN1",
        "type": "input",
        "description": "Channel 1 differential analog voltage negative input to the EADC."
      },
      {
        "number": "35",
        "name": "EAP2",
        "type": "input",
        "description": "Channel 2 differential analog voltage positive input to the EADC; recommended for peak current mode control."
      },
      {
        "number": "36",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "37",
        "name": "V33A",
        "type": "power_in",
        "description": "Analog 3.3 V supply; recommended operating range 3.0 V to 3.6 V (absolute maximum 3.8 V)."
      },
      {
        "number": "38",
        "name": "AD00",
        "type": "input",
        "description": "12-bit ADC channel 0, connected to a 10 µA current source used for PMBus address detection."
      },
      {
        "number": "39",
        "name": "AD01",
        "type": "input",
        "description": "12-bit ADC channel 1, connected to a current source used for PMBus address detection."
      },
      {
        "number": "40",
        "name": "AD02",
        "type": "input",
        "description": "12-bit ADC channel 2, connected to comparator A and used for current sharing (I-share)."
      },
      {
        "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-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The RJA package has four corner anchor pins (unnumbered, shown as 'Corner anchor pin' with pin numbe; Pin 17 is printed as 'DWPM3A' in Table 7-2 (typo). It is listed here as DPWM3A, which matches Figure; Pin types for analog and mixed-function pins (AD*, EAP*/EAN*, ADC_EXT_TRIG, JTAG, RESET, FAULT2) are",
          "exposed pad 41 added from the footprint"
        ],
        "pages_sent": 34,
        "cost_usd": 0.185,
        "at": "2026-10-11T13:05:10"
      },
      "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": "ucd3138rjat.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": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ucd3138rjat-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
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          1.0
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2dba9606f5d2dd7de56e6b70a61a39e15fbd2f07f6523716cab4bfb38c1d7773",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}