XL2596HVS-3.3E1

{
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  "slug": "xl2596hvs-3-3e1",
  "title": "XL2596HVS-3.3E1",
  "brief": "XLSEMI DC-DC Converters, TO-263-5L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "XL2596HVS-3.3E1",
    "manufacturer": "XLSEMI",
    "package": "TO-263-5L",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f217708ddbe1846357fe7957aedcfa7e.pdf",
    "parts": {
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    "distributor_links": {
      "lcsc": "C48031563"
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
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      "mouser": {
        "pn": null,
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    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input pin for the DC 4.5V to 50V operating range, with an electrolytic capacitor required in parallel between VIN and GND to eliminate noise."
      },
      {
        "number": "2",
        "name": "SW",
        "type": "output",
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      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Feedback pin that senses the output voltage through an external resistor divider for regulation, with a 1.23V reference for the adjustable version."
      },
      {
        "number": "5",
        "name": "EN",
        "type": "input",
        "description": "Enable pin, active low: low level turns the device on, high level shuts it down, and it is low when left floating."
      },
      {
        "number": "6",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
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    "provenance": {
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "cost_usd": 0.0485,
        "at": "2026-10-21T00:49:06"
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        "pages": 17,
        "sha256": "10bfc4dd705b0c69",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    "viewers": {
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        "seat": "z = 0",
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  "metadata": {
    "specs": {
      "Manufacturer": "XLSEMI",
      "Package": "TO-263-5L",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
    },
    "characteristics": {
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          "name": "输出电压 (Output voltage, 3.3V version)",
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          "kind": "tolerance",
          "unit": "V",
          "min": 3.25,
          "typ": 3.3,
          "max": 3.35,
          "conditions": "VIN =12V, IOUT=0.5A",
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          "typ": null,
          "max": 50,
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        {
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          "max": 100,
          "conditions": "VEN =2V",
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        },
        {
          "name": "静态电源电流 (Quiescent supply current)",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.3,
          "max": 2,
          "conditions": "注 2 (3.3V版本: VFB=10V)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "振荡频率 (Oscillator frequency)",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "KHz",
          "min": 135,
          "typ": 150,
          "max": 165,
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          "conditions": "",
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        {
          "name": "反馈引脚电压 (Absolute max feedback pin voltage)",
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          "max": 20,
          "conditions": "",
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          "name": "使能引脚电压 (Absolute max enable pin voltage)",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
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        },
        {
          "name": "操作结温 (Operating junction temperature)",
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          "unit": "oC",
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        {
          "name": "贮存温度范围 (Storage temperature)",
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          "unit": "oC",
          "min": -65,
          "typ": null,
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          "conditions": "",
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        {
          "name": "引脚温度 (Lead temperature, soldering)",
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          "kind": "absolute_maximum",
          "unit": "oC",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "焊接10秒",
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        {
          "name": "ESD (HBM)",
          "symbol": "ESD (HBM)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 8000,
          "typ": null,
          "max": null,
          "conditions": "datasheet prints >8000 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "环境工作温度范围 (Ambient operating temperature, grade 1)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "温度等级1级 (feature list)",
          "source_page": 1,
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        {
          "name": "开关电流限值 (Switch current limit)",
          "symbol": "IL",
          "kind": "electrical",
          "unit": "A",
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          "conditions": "VFB =0V",
          "source_page": 5,
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          "name": "EN 引脚高电平阈值 (EN high threshold, shutdown)",
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          "unit": "V",
          "min": null,
          "typ": 1.4,
          "max": null,
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          "name": "EN 引脚低电平阈值 (EN low threshold, on)",
          "symbol": "VEN_L",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.8,
          "max": null,
          "conditions": "低电平（开启）",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "EN 引脚电流 (EN pin current)",
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          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "VEN =2.5V",
          "source_page": 5,
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        {
          "name": "最大占空比 (Maximum duty cycle)",
          "symbol": "DMAX",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "VFB=0V",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "热关断温度 (Thermal shutdown temperature)",
          "symbol": "TSD",
          "kind": "electrical",
          "unit": "℃",
          "min": null,
          "typ": 180,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "热关断迟滞 (Thermal shutdown hysteresis)",
          "symbol": "TD",
          "kind": "electrical",
          "unit": "℃",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "热阻 结到环境 (Thermal resistance, junction to ambient, TO263-5L)",
          "symbol": "RJA",
          "kind": "thermal",
          "unit": "oC /W",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "结到环境，无外部散热片",
          "source_page": 3,
          "source": "datasheet"
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    "name": "Ray",
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