LTP3558-33XT4

{
  "schema_version": 1,
  "type": "component",
  "slug": "ltp3558-33xt4",
  "title": "LTP3558-33XT4",
  "brief": "Linearin Linear Voltage Regulators (LDO), SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "mpn": "LTP3558-33XT4",
    "manufacturer": "Linearin",
    "package": "SOT-89-3",
    "pin_count": 3,
    "category": "Power Supply Chip",
    "subcategory": "Linear Voltage Regulators (LDO)",
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      "lbr": "ltp3558-33xt4.lbr"
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    "distributor_links": {
      "lcsc": "C2897784"
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      "checked_at": "2026-10-18T09:15:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
        "pn": null,
        "status": "quota"
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    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "2",
        "name": "IN",
        "type": "power_in",
        "description": "Supply input pin; must be closely decoupled to GND with a 1μF or greater ceramic capacitor."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "power_out",
        "description": "Output pin; bypass with a 1μF or greater ceramic capacitor from this pin to ground."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "primary_mode": "text",
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin assignments come from the 'Pin Function' table, where the SOT-89 column sits beside the SOT2"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0283,
        "at": "2026-10-18T09:15:04"
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      "datasheet": {
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        "pages": 10,
        "sha256": "006d27c5e87301f9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "units": "mm",
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  "metadata": {
    "specs": {
      "Manufacturer": "Linearin",
      "Package": "SOT-89-3",
      "Category": "Power Supply Chip",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "006d27c5e87301f9695a0f5b24f2e4f0b981dc7ca85e2a3200d543f23186fb1d",
      "rows": [
        {
          "name": "Dropout Voltage",
          "symbol": "VDROP",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 820,
          "conditions": "VOUT= 3.3 V, IOUT = 150mA",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Dropout Voltage",
          "symbol": "VDROP",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 520,
          "conditions": "VOUT= 3.3 V, IOUT = 100mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "DC Supply Quiescent Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1.5,
          "max": 3,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Line Regulation",
          "symbol": "RegLINE",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.01,
          "max": 0.04,
          "conditions": "VIN = VOUT +1V to 30V, IOUT = 10mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Load Regulation",
          "symbol": "RegLOAD",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 5,
          "max": 20,
          "conditions": "IOUT from 1mA to 150mA, VIN=VOUT+2V",
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        },
        {
          "name": "Output Voltage Load Regulation",
          "symbol": "RegLOAD",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 25,
          "max": 60,
          "conditions": "IOUT from 1mA to 150mA, VIN=10V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum Output Current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "VIN = VOUT +1V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage Operation Range",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Short Current Protection",
          "symbol": "ISHORT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "OUT short to GND",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "Worst-case over load, line, process and temperature (general description)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "IN pin to GND pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "OUT pin to GND pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "Soldering, 10 sec",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ESD (HBM mode)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -2000,
          "typ": null,
          "max": 2000,
          "conditions": "ESDA/JEDEC JS-001-2017",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Recommended output capacitance",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 1,
          "typ": null,
          "max": 10,
          "conditions": "Ceramic, X7R or X5R",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Recommended output capacitor ESR",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "mΩ",
          "min": 5,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Recommended input capacitance",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 1,
          "typ": null,
          "max": 10,
          "conditions": "Ceramic, between IN and GND",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance (Junction to Ambient), SOT-89",
          "symbol": "",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 135,
          "max": null,
          "conditions": "Junction to ambient",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Noise",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "µVRMS",
          "min": null,
          "typ": 90,
          "max": null,
          "conditions": "10Hz to 100kHz, IOUT = 30mA",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_pitch": "LTP3558-33XT4 (Linearin) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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