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Ray Set visibility: public ba66237 23h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "bu33td2wnvx-tl",
  "title": "BU33TD2WNVX-TL",
  "brief": "ROHM Semicon Linear Voltage Regulators (LDO), DFN-4-EP(1x1). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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  "component": {
    "mpn": "BU33TD2WNVX-TL",
    "manufacturer": "ROHM Semicon",
    "package": "DFN-4-EP(1x1)",
    "pin_count": 5,
    "category": "Power Management ICs",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c6ba432a712e457f9600842d3b83286a.pdf",
    "parts": {
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      "footprint": "bu33td2wnvx-tl.kicad_mod",
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      "lbr": "bu33td2wnvx-tl.lbr"
    },
    "distributor_links": {
      "lcsc": "C161952",
      "digikey": "BU33TD2WNVX-TLTR-ND",
      "mouser": "755-BU33TD2WNVX-TL"
    },
    "distributor_check": {
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "BU33TD2WNVX-TLTR-ND",
        "status": "found"
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      "mouser": {
        "pn": "755-BU33TD2WNVX-TL",
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    "pins": [
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        "number": "1",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output voltage pin, with a 0.47uF ceramic output capacitor (minimum 0.22uF) recommended and a built-in output discharge circuit."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin, which must be the lowest potential in the system under all operating conditions."
      },
      {
        "number": "3",
        "name": "STBY",
        "type": "input",
        "description": "ON/OFF control of the output voltage, with High (1.2V to 6.0V) = ON and Low (-0.3V to 0.3V) = OFF."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply voltage input with a recommended operating range of 1.7V to 6.0V and an absolute maximum of 6.5V."
      },
      {
        "number": "5",
        "name": "EP",
        "type": "passive",
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          "extractor flagged: The datasheet labels the exposed pad 'reverse FIN' without a pin number. Number '5' is assigned here"
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        "at": "2026-11-06T08:42:02"
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        "pages": 44,
        "sha256": "3d280d5541ecf98d",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 5,
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  "metadata": {
    "specs": {
      "Manufacturer": "ROHM Semicon",
      "Package": "DFN-4-EP(1x1)",
      "Category": "Power Management ICs",
      "Pins": "5"
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          "name": "Power Supply Voltage (absolute maximum)",
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          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 3,
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        {
          "name": "Power Dissipation",
          "symbol": "Pd",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 560,
          "conditions": "(*1) derated 5.6mW/℃ above Ta=25℃, mounted on 70×70×1.6 mm glass-epoxy PCB",
          "source_page": 3,
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        {
          "name": "Maximum junction temperature",
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          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
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          "name": "Operating Temperature Range",
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          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
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        {
          "name": "Storage Temperature Range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
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          "conditions": "",
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        {
          "name": "Power Supply Voltage (recommended)",
          "symbol": "VIN",
          "kind": "recommended_operating",
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        {
          "name": "Maximum Output Current",
          "symbol": "IMAX",
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        {
          "name": "Input Capacitor",
          "symbol": "Cin",
          "kind": "recommended_operating",
          "unit": "μF",
          "min": 0.22,
          "typ": 0.47,
          "max": null,
          "conditions": "Ceramic capacitor recommended",
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        {
          "name": "Output Capacitor",
          "symbol": "Co",
          "kind": "recommended_operating",
          "unit": "μF",
          "min": 0.22,
          "typ": 0.47,
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        {
          "name": "Output Voltage accuracy",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "IOUT=10μA, VOUT≧2.5V",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Operating Current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 35,
          "max": 60,
          "conditions": "IOUT=0mA",
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        {
          "name": "Operating Current (STBY)",
          "symbol": "ISTBY",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "STBY=0V",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Ripple Rejection Ratio",
          "symbol": "RR",
          "kind": "electrical",
          "unit": "dB",
          "min": 45,
          "typ": 70,
          "max": null,
          "conditions": "VRR=-20dBv, fRR=1kHz, IOUT=10mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage (3.2V≦VOUT≦3.4V)",
          "symbol": "VSAT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 220,
          "max": 420,
          "conditions": "3.2V≦VOUT≦3.4V (IOUT=200mA)",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Line Regulation",
          "symbol": "VDL",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 2,
          "max": 20,
          "conditions": "VIN=VOUT+1.0V to 5.5V (*4), IOUT=10μA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "VDLO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 80,
          "conditions": "IOUT=0.01mA to 100mA",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Over Current Protection Limit Current",
          "symbol": "ILMAX",
          "kind": "electrical",
          "unit": "mA",
          "min": 220,
          "typ": 400,
          "max": 700,
          "conditions": "Vo=VOUT*0.95",
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          "name": "Short Current",
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          "kind": "electrical",
          "unit": "mA",
          "min": 20,
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          "max": 150,
          "conditions": "Vo=0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Discharge Resistor",
          "symbol": "RDSC",
          "kind": "electrical",
          "unit": "Ω",
          "min": 20,
          "typ": 50,
          "max": 80,
          "conditions": "VIN=4.0V, STBY=0V, VOUT=4.0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "STBY Pin Pull-down Current",
          "symbol": "ISTB",
          "kind": "electrical",
          "unit": "μA",
          "min": 0.1,
          "typ": 0.6,
          "max": 2,
          "conditions": "STBY=1.5V",
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          "name": "STBY Control Voltage ON",
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          "typ": null,
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          "conditions": "",
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          "name": "STBY Control Voltage OFF",
          "symbol": "VSTBL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
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          "conditions": "",
          "source_page": 4,
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          "name": "Thermal resistance junction-ambient",
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          "unit": "°C/W",
          "min": null,
          "typ": 178.6,
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          "source_page": 38,
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          "unit": "°C/W",
          "min": null,
          "typ": 256.4,
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          "conditions": "Evaluation Board 1 40×40×1.6 mm, glass epoxy, wind speed 0 m/s",
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        {
          "name": "Output Voltage (nominal, BU33)",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3.3,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
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