TX4115

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  "type": "component",
  "slug": "tx4115",
  "title": "TX4115",
  "brief": "XDS DC-DC Converters, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "tx4115"
  ],
  "component": {
    "mpn": "TX4115",
    "manufacturer": "XDS",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/38b58e3089082973f73b69ea527ac723.pdf",
    "parts": {
      "symbol": "tx4115.kicad_sym",
      "footprint": "tx4115.kicad_mod",
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      "model_3d_plain": "tx4115.glb",
      "model_3d_step": "tx4115-etched.step",
      "model_3d_step_plain": "tx4115.step",
      "lbr": "tx4115.lbr"
    },
    "distributor_links": {
      "lcsc": "C329264"
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback input. Connect to the midpoint of an external resistor divider from VOUT to GND. The internal error amplifier regulates this pin to the 1.21V reference (VREF). R1 = R2*(VOUT/VREF - 1)."
      },
      {
        "number": "2",
        "name": "TOFF",
        "type": "input",
        "description": "Oscillator/switching frequency setting pin. Connect a resistor from TOFF to GND to set the switching frequency: RTOFF(kΩ) = (6500/Fosc[kHz])^2. Resistor range 130kΩ to 1.5MΩ; leaving TOFF floating defaults to ~130kHz. Internally held at 0.6V."
      },
      {
        "number": "3",
        "name": "ILIM",
        "type": "input",
        "description": "Peak current limit programming pin. Connect an external resistor R4 from ILIM to GND to set the peak inductor current limit: R4(kΩ) = 23 * IMAX(A). Typical detection current 8.5µA. If left floating, default peak current limit is 2.7A."
      },
      {
        "number": "4",
        "name": "VDD",
        "type": "power_in",
        "description": "Chip supply input, 8V to 30V (absolute max 35V). Bypass with a 100µF low-ESR capacitor to GND close to the pin to suppress input transients. UVLO threshold ~4.25-4.5V."
      },
      {
        "number": "5",
        "name": "SW",
        "type": "output",
        "description": "Switching node. Connect the external output inductor here. Internally tied to the drains of both the high-side PMOS and low-side NMOS power switches. Pins 5 and 6 are shorted internally to share switch current."
      },
      {
        "number": "6",
        "name": "SW",
        "type": "output",
        "description": "Switching node (parallel with pin 5). Connect the external output inductor here. Tie pins 5 and 6 together for full current handling."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground. Analog/power return. Pins 7 and 8 are both GND and should both be tied to the ground plane; they also provide the primary thermal path for the SOP-8 package."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground (parallel with pin 7). Tie to the ground plane along with pin 7 for low-impedance return and heat sinking."
      }
    ],
    "provenance": {
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "XDS",
      "Package": "SOP-8",
      "Category": "PMIC",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "5eba4f131236225b",
      "rows": [
        {
          "name": "Power supply voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 35,
          "conditions": "",
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        },
        {
          "name": "FB/ILIM/TOFF voltage",
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        {
          "name": "SW pin voltage",
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          "min": -0.3,
          "typ": null,
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          "source_page": 3,
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        },
        {
          "name": "Maximum power dissipation",
          "symbol": "P_SOP8",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "SOP8",
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          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Storage temperature",
          "symbol": "T_STG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Supply voltage range",
          "symbol": "VDD",
          "kind": "electrical",
          "unit": "V",
          "min": 8,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input threshold voltage (UVLO)",
          "symbol": "V_UVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 4.25,
          "typ": null,
          "max": 4.5,
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          "source": "datasheet"
        },
        {
          "name": "UVLO hysteresis voltage",
          "symbol": "∆V_UVLO",
          "kind": "electrical",
          "unit": "mV",
          "min": 50,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": 10,
          "typ": 15,
          "max": 20,
          "conditions": "ILOAD=0A",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Feedback voltage",
          "symbol": "V_FB",
          "kind": "electrical",
          "unit": "V",
          "min": 1.18,
          "typ": 1.21,
          "max": 1.24,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Current-limit detection pin current",
          "symbol": "I_LIM-TH",
          "kind": "electrical",
          "unit": "uA",
          "min": 7,
          "typ": 8.5,
          "max": 10,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum oscillation frequency",
          "symbol": "Fosc_MAX",
          "kind": "electrical",
          "unit": "KHz",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum duty cycle",
          "symbol": "DC",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 90,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
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  "discovery_pitch": "TX4115 (XDS) component page with datasheet-verified CAD.",
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    "name": "Ray"
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  "updated_at": "2026-09-25T13:15:45.225Z"
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