LM2591HVS-12

{
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  "type": "component",
  "slug": "lm2591hvs-12",
  "title": "LM2591HVS-12",
  "brief": "UMW DC-DC Converters, TO-263-5. 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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    "power management (pmic)",
    "lm2591hvs-12",
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  "component": {
    "mpn": "LM2591HVS-12",
    "manufacturer": "UMW",
    "package": "TO-263-5",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
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    "distributor_links": {
      "lcsc": "C5240479",
      "digikey": "4518-LM2591HVS-12TR-ND"
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      "checked_at": "2026-10-18T03:59:23Z",
      "source": "Component Ocean /api/assign-pns",
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        "pn": "4518-LM2591HVS-12TR-ND",
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      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Positive input supply for the switching regulator, rated up to 60V in the features list (absolute maximum supply 63V), and needs a suitable low-ESR input bypass capacitor placed close to this pin."
      },
      {
        "number": "2",
        "name": "Output",
        "type": "output",
        "description": "Internal switch output that swings between (VIN − VSAT) and about −0.5V at a duty cycle of approximately VOUT/VIN, with output-to-ground steady-state limit of −1V, so its PC board copper area should be kept to a minimum."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Circuit ground for the regulator."
      },
      {
        "number": "4",
        "name": "Feedback",
        "type": "input",
        "description": "Senses the regulated output voltage to complete the feedback loop."
      },
      {
        "number": "5",
        "name": "ON/OFF",
        "type": "input",
        "description": "Logic-level shutdown pin: pulling it below about 1.3V turns the regulator on, pulling it above 1.3V (maximum 25V) shuts it down, and leaving it floating or tied to ground keeps the regulator on."
      },
      {
        "number": "6",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The ordering table lists UMW LM2591HVS-12 (the 'S' suffix) as TO-263 packaged, so the TO-263 pinout ; Pin descriptions are taken from the Pin Descriptions table (page 3) and the Pin Functions section (p; The absolute maximum ratings table on page 4 has garbled layout, so the rating values were matched t",
          "exposed pad 6 added from the footprint",
          "2/6 pins cited to the wrong page (name found elsewhere): ['2:Output@p13', '4:Feedback@p13']"
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        "cost_usd": 0.0556,
        "at": "2026-10-18T03:57:43"
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        "pages": 22,
        "sha256": "3830e8a059139e73",
        "source_tier": "lcsc"
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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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  "metadata": {
    "specs": {
      "Manufacturer": "UMW",
      "Package": "TO-263-5",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
    },
    "appearance": {
      "contacts": {
        "quote": "leads soldered to a printed circuit board with (1 oz.) copper area of approximately 1 in2",
        "page": 8,
        "doc": "ds.pdf",
        "material": "copper"
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          "name": "Output voltage (12V version)",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 11.4,
          "typ": 12,
          "max": 12.6,
          "conditions": "15V≤VIN≤60V, 0.2A≤ILOAD≤1A; min/max are full operating temperature range (room temp: 11.52 / 12.48)",
          "source_page": 5,
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        },
        {
          "name": "Oscillator frequency",
          "symbol": "fO",
          "kind": "electrical",
          "unit": "kHz",
          "min": 110,
          "typ": 150,
          "max": 173,
          "conditions": "VIN=24V for 12V version, ILOAD=500mA; min/max are full operating temperature range (room temp min 127)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Saturation voltage",
          "symbol": "VSAT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.16,
          "max": 1.5,
          "conditions": "IOUT=1A (Notes 7, 8); max is full operating temperature range (room temp max 1.4)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Standby quiescent current",
          "symbol": "ISTBY",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 80,
          "max": 250,
          "conditions": "ON/OFF pin=5V (OFF); max is full operating temperature range (room temp max 200)",
          "source_page": 6,
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        {
          "name": "Supply voltage (recommended operating)",
          "symbol": "",
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          "typ": null,
          "max": 60,
          "conditions": "",
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        },
        {
          "name": "Operating temperature range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "Ordering table: -40°C≤TA≤125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum supply voltage",
          "symbol": "",
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          "unit": "V",
          "min": null,
          "typ": null,
          "max": 63,
          "conditions": "",
          "source_page": 4,
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        {
          "name": "ON/OFF pin input voltage",
          "symbol": "",
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          "unit": "V",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Output voltage to ground (steady state)",
          "symbol": "",
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          "unit": "V",
          "min": -1,
          "typ": null,
          "max": null,
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          "source_page": 4,
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        {
          "name": "Storage temperature range",
          "symbol": "",
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          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "ESD susceptibility, human body model",
          "symbol": "",
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          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "Human body model (100 pF, 1.5 kΩ)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum junction temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Vapor phase soldering",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 215,
          "conditions": "60 sec.",
          "source_page": 4,
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        {
          "name": "Infrared soldering",
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          "name": "T package soldering",
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          "source_page": 4,
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        },
        {
          "name": "Junction to case thermal resistance",
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          "unit": "°C/W",
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          "max": null,
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          "name": "Junction to ambient thermal resistance (TO-263, 0.5 in² copper)",
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          "min": null,
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          "min": null,
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          "name": "Junction to ambient thermal resistance (TO-263, 3 in² copper)",
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          "kind": "thermal",
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          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "TO-263 package, junction to ambient, double-sided PCB 3 in² 1 oz copper (Note 14)",
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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