TX4151

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  "type": "component",
  "slug": "tx4151",
  "title": "TX4151",
  "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",
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    "pmic",
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  "component": {
    "mpn": "TX4151",
    "manufacturer": "XDS",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2202132000_XDS-TX4151_C2840021.pdf",
    "parts": {
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    "distributor_links": {
      "lcsc": "C2840021"
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    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Chip supply voltage input. Operating range +8V to +30V (absolute max +34V). Bypass with a low-ESR ceramic capacitor (typ. 10μF) placed close to the pin."
      },
      {
        "number": "2",
        "name": "COMP",
        "type": "bidirectional",
        "description": "Loop compensation pin. External R-C network to GND sets the PWM/error-amplifier compensation. Absolute max +3V."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback input. Regulated to internal reference VFB = 0.835V (0.815-0.855V). VOUT = (1 + R3/R4) × 0.835V. Absolute max +3V."
      },
      {
        "number": "5",
        "name": "CS-",
        "type": "input",
        "description": "Negative terminal of the current-sense input. External sense resistor is connected between CS+ and CS- to set the output current limit; ILIMIT = 75mV / Rsense. Common-mode range -0.6V to +6V."
      },
      {
        "number": "6",
        "name": "CS+",
        "type": "input",
        "description": "Positive terminal of the current-sense input. Together with CS- senses the voltage across the external current-limit resistor (VOFFS typ. 75mV). Common-mode range -0.6V to +6V."
      },
      {
        "number": "7",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain charge-status indicator output. Sinks up to IOUT ≈ 1.5mA; absolute max pin voltage +10V. Typically pulled up through an LED or resistor to indicate charging state."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "output",
        "description": "Switch node. Drain of the internal 100mΩ PMOS power switch; connects to the external inductor and freewheeling Schottky diode. Voltage range -1V to +34V."
      }
    ],
    "provenance": {
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        "pages": 10,
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "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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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "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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        "checked": "2026-10-07",
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    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "XDS",
      "Package": "SOP-8",
      "Category": "PMIC",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0be198588bad936b",
      "rows": [
        {
          "name": "Input voltage (operating range)",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 8,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Load current (maximum)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Switching frequency",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "kHz",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Internal current limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "",
          "source_page": 1,
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        },
        {
          "name": "PMOS switch on-resistance",
          "symbol": "RDS(on)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Feedback reference voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.835,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Current-sense threshold (ILIMIT = 75mV / R2)",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 75,
          "max": null,
          "conditions": "ILIMIT = 75mV / R2",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Over-temperature shutdown threshold",
          "symbol": "",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "Chip temperature rises under long heavy-load operation",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Over-temperature hysteresis (approx.)",
          "symbol": "",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "TX4151 (XDS) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
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  "updated_at": "2026-09-25T13:17:06.823Z"
}