TX4401

{
  "schema_version": 1,
  "type": "component",
  "slug": "tx4401",
  "title": "TX4401",
  "brief": "XDS DC-DC Converters, ESOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "tx4401"
  ],
  "component": {
    "mpn": "TX4401",
    "manufacturer": "XDS",
    "package": "MSOP-10",
    "pin_count": 10,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/1912111437_XDS-TX4401_C448642.pdf",
    "parts": {
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      "footprint": "tx4401.kicad_mod",
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      "model_3d_plain": "tx4401.glb",
      "model_3d_step": "tx4401-etched.step",
      "model_3d_step_plain": "tx4401.step",
      "lbr": "tx4401.lbr"
    },
    "distributor_links": {
      "lcsc": "C448642"
    },
    "pins": [
      {
        "number": "1",
        "name": "RT",
        "type": "input",
        "description": "Oscillator frequency programming pin. A resistor from RT to GND sets the internal switching frequency (adjustable 350 kHz to 1.5 MHz). Typical value 60.4 kΩ sets fOSC ≈ 1 MHz per the application circuit."
      },
      {
        "number": "2",
        "name": "MODE/SYNC",
        "type": "input",
        "description": "Dual-function mode select and external clock synchronisation input. Drive high to enter the 50μA low-power (light-load) mode; can also be driven with an external clock to synchronise the internal oscillator."
      },
      {
        "number": "3",
        "name": "SW1",
        "type": "passive",
        "description": "Switch node 1. Connects to one terminal of the external buck-boost inductor; internally tied to the SW A (high-side input) and SW B (low-side to GND) power MOSFETs."
      },
      {
        "number": "4",
        "name": "SW2",
        "type": "passive",
        "description": "Switch node 2. Connects to the other terminal of the external buck-boost inductor; internally tied to the SW C (low-side to GND) and SW D (high-side to VOUT) power MOSFETs."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Return for the power MOSFETs and internal control circuitry; connect to the system ground plane."
      },
      {
        "number": "6",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage. Range 2.5V-5.5V (per internal block diagram); connect an output filter capacitor (e.g. 22μF) to GND close to the pin."
      },
      {
        "number": "7",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin. 2.7V-5.5V for the MSOP-10 variant. Bypass with a low-ESR capacitor of at least 4.7μF as close to the pin as possible. Absolute maximum 6V."
      },
      {
        "number": "8",
        "name": "EN",
        "type": "input",
        "description": "Enable / shutdown input. Drive high to enable the converter, drive low to place the device into <1μA shutdown mode."
      },
      {
        "number": "9",
        "name": "FB",
        "type": "input",
        "description": "Feedback pin. Regulated to an internal 1.22V reference; connect to the mid-point of the output resistor divider to program VOUT (VOUT = 1.22 × (1 + R1/R2))."
      },
      {
        "number": "10",
        "name": "VC",
        "type": "output",
        "description": "Error-amplifier output / loop-compensation node. Connect an external RC network (e.g. 15kΩ + 1.5nF to GND per the application circuit) here to shape the control-loop response."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/1912111437_XDS-TX4401_C448642.pdf",
        "pages": 7,
        "sha256": "3fd3b5b827543a76",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 10,
        "described": 10,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm@sha256:5848244c5e72002e",
      "mark": "drawn"
    },
    "models_3d": [
      {
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b8f88eac3ce221c2ccb0b5048f9ad49c2ef4af148f8ae50c4e232e357683f547",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tx4401-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "46e2a52abefa8354a28f8cfe2d5f3075365d99ea48a5ea8375073541864c1593",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "XDS",
      "Package": "ESOP-8",
      "Category": "PMIC",
      "Pins": "10"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "3fd3b5b827543a76",
      "rows": [
        {
          "name": "VIN, VOUT maximum voltage",
          "symbol": "VIN, VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "RT, FB, VC, EN, MODE/SYNC voltage",
          "symbol": "RT, FB, VC, EN, MODE/SYNC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
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          "max": 6,
          "conditions": "",
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        },
        {
          "name": "SW1, SW2 maximum voltage",
          "symbol": "SW1, SW2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Operating temperature range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Performance guaranteed 0°C to 70°C (note 2)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Soldering temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "10 s soldering",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input/output voltage range (MSOP10)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 5.5,
          "conditions": "MSOP-10 package variant",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Adjustable operating frequency",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "kHz",
          "min": 350,
          "typ": null,
          "max": 1.5,
          "conditions": "Set by external resistor on RT; max printed as 1.5 MHz",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "sections": [
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    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "TX4401 (XDS) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "tx4401.lbr",
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  "visibility": {
    "public": true
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  "updated_at": "2026-09-25T13:18:20.083Z"
}