TX4143B

{
  "schema_version": 1,
  "type": "component",
  "slug": "tx4143b",
  "title": "TX4143B",
  "brief": "XDS DC-DC Converters, SOP-8. 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)",
    "tx4143b",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TX4143B",
    "manufacturer": "XDS",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590237640030121984",
    "parts": {
      "symbol": "tx4143b.kicad_sym",
      "footprint": "tx4143b.kicad_mod",
      "model_3d": "tx4143b-hero.glb",
      "model_3d_plain": "tx4143b.glb",
      "model_3d_step": "tx4143b-etched.step",
      "model_3d_step_plain": "tx4143b.step",
      "lbr": "tx4143b.lbr"
    },
    "distributor_links": {
      "lcsc": "C5121274"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T04:29:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Output feedback voltage pin: the FB voltage is compared with the 0.82 V internal reference by the error amplifier, with the output set by the external R1/R2 divider; FB absolute maximum is -0.3 to 6 V."
      },
      {
        "number": "2",
        "name": "FS",
        "type": "input",
        "description": "Operating frequency setting pin: an external resistor to ground sets fSW (about 140 kHz when FS is left floating, 450 kHz with 470 kΩ to ground), with a recommended maximum fSW of 500 kHz; FS absolute maximum is -0.3 to 6 V."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Chip enable pin: rising threshold 1.1 V and falling threshold 0.8 V, it must not be left floating (it can be tied directly to VIN when enable control is not used), and its sink current is limited to 100 µA."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Chip supply input: operating range 6 V to 40 V, with an absolute maximum of -0.3 to 45 V and an undervoltage lockout rising threshold of 5.5 V."
      },
      {
        "number": "5",
        "name": "SW",
        "type": "output",
        "description": "Switching output pin that connects the internal power MOSFET to the inductor and external Schottky diode; SW voltage is limited to -0.3 V to VIN+0.3 V."
      },
      {
        "number": "6",
        "name": "SW",
        "type": "output",
        "description": "Switching output pin (second SW pin, bonded in parallel with pin 5) that connects the inductor and external Schottky diode; SW voltage is limited to -0.3 V to VIN+0.3 V."
      },
      {
        "number": "7",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin for the device, to be connected with a large copper area together with VIN and SW for thermal performance."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin for the device (second VSS pin, bonded in parallel with pin 7), to be connected with a large copper area together with VIN and SW for thermal performance."
      }
    ],
    "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 datasheet provides only one package, SOP8, so the pinout is the SOP8 pinout. No other package va; The pin-diagram text on page 2 is garbled and does not show clearly which physical pin is pin 1 (the; Pins 5/6 (SW) and 7/8 (VSS) are each listed as a pair in the datasheet table (\"5,6\" and \"7,8\"); they"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0378,
        "at": "2026-10-09T04:28:42"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590237640030121984",
        "pages": 9,
        "sha256": "51f9374809a9ffc6",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tx4143b.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tx4143b-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "147c6904dadb18e15925f4fd0cd015e67b5323e7f57753e2adf323f6c2634ba4",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "XDS",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tx4143b"
  ],
  "discovery_pitch": "TX4143B (XDS) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tx4143b.kicad_sym",
    "tx4143b.kicad_mod",
    "tx4143b.glb",
    "tx4143b.step",
    "tx4143b.lbr",
    "docs/hero.png",
    "docs/tx4143b-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tx4143b-hero.glb",
    "tx4143b-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}