LM2596S-5.0

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm2596s-5-0",
  "title": "LM2596S-5.0",
  "brief": "HGSEMI DC-DC Converters, TO-263-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "pmic",
    "lm2596s-5.0"
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  "component": {
    "mpn": "LM2596S-5.0",
    "manufacturer": "HGSEMI",
    "package": "TO-263-5",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/1fb50b1263feb5a9f9e3614efcf7858a.pdf",
    "parts": {
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      "model_3d_step_plain": "lm2596s-5-0.step",
      "lbr": "lm2596s-5-0.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated DC input supply. Operating range 4.75V to 40V (LM2596) / 4.75V to 60V (LM2596HV); absolute max 45V / 63V. Bypass close to pin with a low-ESR input capacitor (typ. 680 uF)."
      },
      {
        "number": "2",
        "name": "Output",
        "type": "output",
        "description": "Switching output node of the internal power switch. Connects to the external catch diode (e.g. 1N5824 Schottky) cathode and to the output inductor (typ. 33 uH). Rated 3A continuous load current; do not exceed -1V below ground in steady state."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. Tie directly to the system ground plane; carries return current for both control and power stages."
      },
      {
        "number": "4",
        "name": "Feedback",
        "type": "input",
        "description": "Output voltage feedback sense pin. For the fixed 5.0V version this pin ties directly to the regulated output; internal divider sets Vout = 5V. Absolute max -0.3V to +25V."
      },
      {
        "number": "5",
        "name": "ON/OFF",
        "type": "input",
        "description": "Active-low TTL-compatible shutdown. Regulator is enabled when this pin is Low or left floating; pulled High (up to +25V) forces low-power standby (IQ ~ 80 uA typ.). Absolute max -0.3V to +25V."
      },
      {
        "number": "6",
        "name": "TAB",
        "type": "power_in",
        "description": "Exposed thermal pad. Present in the package land pattern; connect it per the manufacturer datasheet thermal recommendation. Added because the footprint carries this pad and the symbol had no pin for it.",
        "source": "derived-from-footprint"
      }
    ],
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
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        "refuses_to_fabricate": true
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    "pin1": {
      "pad": "1",
      "at": [
        -7.65,
        -3.4
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TO-263-5_TabPin6@sha256:77e8ff2d643255fc",
      "mark": "drawn"
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        "checked": "2026-10-07",
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      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "TO-263-5",
      "Category": "PMIC",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
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        {
          "name": "Output voltage, LM2596S-5.0 (TJ=25°C)",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 4.8,
          "typ": 5,
          "max": 5.2,
          "conditions": "VIN=12V, ILOAD=3A; TJ=25°C",
          "source_page": 5,
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        },
        {
          "name": "Output voltage, LM2596S-5.0 (full operating temperature range)",
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          "min": 4.75,
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          "max": 5.25,
          "conditions": "VIN=12V, ILOAD=3A; full operating temperature range",
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        {
          "name": "Oscillator frequency",
          "symbol": "fO",
          "kind": "electrical",
          "unit": "kHz",
          "min": 117,
          "typ": 150,
          "max": 183,
          "conditions": "",
          "source_page": 6,
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        },
        {
          "name": "Current limit (TJ=25°C)",
          "symbol": "ICL",
          "kind": "electrical",
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          "min": 3.6,
          "typ": 4.5,
          "max": 6.9,
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        {
          "name": "Current limit (full operating temperature range)",
          "symbol": "ICL",
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          "min": 3.4,
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        {
          "name": "Saturation voltage (TJ=25°C)",
          "symbol": "VSAT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.16,
          "max": 1.4,
          "conditions": "IOUT=3A (Notes 7, 8)",
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        {
          "name": "Saturation voltage (full operating temperature range)",
          "symbol": "VSAT",
          "kind": "electrical",
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          "max": 1.5,
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          "name": "Quiescent current",
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          "kind": "electrical",
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          "conditions": "(Note 9)",
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        },
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          "name": "Standby quiescent current (TJ=25°C)",
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          "kind": "electrical",
          "unit": "µA",
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          "typ": 80,
          "max": 200,
          "conditions": "ON/OFF pin=5V (OFF)",
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          "name": "Standby quiescent current (full operating temperature range)",
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        {
          "name": "ON/OFF pin logic input threshold voltage, low (regulator ON)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.3,
          "max": 0.6,
          "conditions": "Low (Regulator ON)",
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        {
          "name": "ON/OFF pin logic input threshold voltage, high (regulator OFF)",
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          "kind": "electrical",
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          "min": 2,
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          "max": null,
          "conditions": "High (Regulator OFF)",
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        {
          "name": "ON/OFF pin input current, high (regulator OFF)",
          "symbol": "IH",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 5,
          "max": 15,
          "conditions": "VLOGIC=2.5V (Regulator OFF)",
          "source_page": 7,
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          "name": "ON/OFF pin input current, low (regulator ON)",
          "symbol": "IL",
          "kind": "electrical",
          "unit": "µA",
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          "typ": 0.02,
          "max": 5,
          "conditions": "VLOGIC=0.5V (Regulator ON)",
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        {
          "name": "Maximum supply voltage (LM2596)",
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        {
          "name": "ON/OFF pin input voltage",
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          "min": -0.3,
          "typ": null,
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          "name": "Feedback pin voltage",
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          "conditions": "",
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          "name": "Output voltage to ground (steady state)",
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        {
          "name": "Storage temperature range",
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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",
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          "conditions": "Human body model",
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        {
          "name": "Soldering, vapor phase (60 s)",
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          "unit": "°C",
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          "name": "Soldering, infrared (10 s)",
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          "conditions": "10 sec.",
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          "name": "Soldering, T package (10 s)",
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          "unit": "°C",
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          "conditions": "10 sec.",
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        {
          "name": "Maximum junction temperature",
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          "unit": "°C",
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        {
          "name": "Operating junction temperature range",
          "symbol": "TJ",
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          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
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        {
          "name": "Supply voltage (LM2596)",
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          "min": 4.75,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance, junction to case (TO-263)",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "TO-220 or TO-263 Package, Junction to Case",
          "source_page": 7,
          "source": "datasheet"
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          "name": "Thermal resistance, junction to ambient, TO-263 (0.5 in² copper)",
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          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 50,
          "max": null,
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          "unit": "°C/W",
          "min": null,
          "typ": 30,
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          "name": "Thermal resistance, junction to ambient, TO-263 (3 in² copper, double sided)",
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          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "TO-263, junction to ambient, double sided PCB, 3 in² 1 oz copper on LM2596S side (Note 14)",
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      ]
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  "variants": [
    {
      "mpn": "LM2596S-5.0",
      "kind": "packaging"
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    {
      "mpn": "LM2596HVS-5.0",
      "kind": "unknown"
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      "mpn": "LM2596HVT-5.0",
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  "updated_at": "2026-09-28T16:15:32.637Z"
}