LM2576S-5.0

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  "slug": "lm2576s-5-0",
  "title": "LM2576S-5.0",
  "brief": "HGSEMI LM2576S 5 0 TR 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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  "component": {
    "mpn": "LM2576S-5.0",
    "manufacturer": "HGSEMI LM2576S 5 0 TR",
    "package": "TO-263-5",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/65fb3e0d7cf14dbbc90ed14db097cde4.pdf",
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      "lbr": "lm2576s-5-0.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage. Operating range 4.5V to 40V for LM2576 (up to 60V for LM2576HV). Absolute maximum 45V (63V HV). Bypass with a suitable input capacitor close to this pin."
      },
      {
        "number": "2",
        "name": "Output",
        "type": "output",
        "description": "Switching output from the internal 3A power switch. Connects to the external catch diode (e.g. 1N5822) and the smoothing inductor (typ. 100µH). Steady-state output voltage may swing down to -1V relative to GND."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference for the internal regulator, oscillator, error amplifier, and power switch return."
      },
      {
        "number": "4",
        "name": "Feedback",
        "type": "input",
        "description": "Output voltage feedback input to the internal error amplifier. On fixed-voltage versions (like the -5.0), tie directly to the regulated output node so the internal divider senses VOUT (internal 1.23V band-gap reference)."
      },
      {
        "number": "5",
        "name": "ON/OFF",
        "type": "input",
        "description": "TTL-compatible active-low shutdown input. Low or floating enables the regulator; drive high to enter low-power standby mode (~50µA typ). Input range -0.3V to +VIN."
      },
      {
        "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.",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
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        "described": 5,
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    "pin1": {
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      "at": [
        -7.65,
        -3.4
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      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TO-263-5_TabPin6@sha256:77e8ff2d643255fc",
      "mark": "drawn"
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
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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": {
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          "name": "Output Voltage (LM2576 5.0 version, VIN=12V, ILOAD=0.5A)",
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          "unit": "V",
          "min": 4.9,
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          "name": "Output Voltage (LM2576 5.0 version, TJ=25°C)",
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          "name": "Output Voltage (LM2576 5.0 version, full operating temperature range)",
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          "min": 4.75,
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          "max": 5.25,
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        },
        {
          "name": "Oscillator Frequency (TJ=25°C)",
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          "typ": 52,
          "max": 58,
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          "name": "Oscillator Frequency (full operating temperature range)",
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          "typ": 52,
          "max": 63,
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        },
        {
          "name": "Saturation Voltage (TJ=25°C)",
          "symbol": "VSAT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.4,
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          "conditions": "IOUT=3A (Note 4)",
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        {
          "name": "Saturation Voltage (full operating temperature range)",
          "symbol": "VSAT",
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        {
          "name": "Max Duty Cycle (ON)",
          "symbol": "DC",
          "kind": "electrical",
          "unit": "%",
          "min": 93,
          "typ": 98,
          "max": null,
          "conditions": "VIN=12V, ILOAD=500mA (table default)",
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        {
          "name": "Current Limit (TJ=25°C)",
          "symbol": "ICL",
          "kind": "electrical",
          "unit": "A",
          "min": 4.2,
          "typ": 5.8,
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        {
          "name": "Current Limit (full operating temperature range)",
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          "min": 3.5,
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        },
        {
          "name": "Standby Quiescent Current",
          "symbol": "ISTBY",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 50,
          "max": 200,
          "conditions": "ON/OFF pin=5V (OFF)",
          "source_page": 8,
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        },
        {
          "name": "ON/OFF Pin Logic Input High Level (TJ=25°C)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.2,
          "typ": 1.4,
          "max": null,
          "conditions": "VOUT=0V",
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          "name": "ON/OFF Pin Logic Input High Level (full operating temperature range)",
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          "conditions": "VOUT=0V",
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        {
          "name": "ON/OFF Pin Logic Input Low Level (TJ=25°C)",
          "symbol": "VIL",
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          "unit": "V",
          "min": null,
          "typ": 1.2,
          "max": 1,
          "conditions": "VOUT=Nominal Output Voltage",
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          "name": "ON/OFF Pin Logic Input Low Level (full operating temperature range)",
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        {
          "name": "ON/OFF Pin Input Current (high, OFF)",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 12,
          "max": 30,
          "conditions": "ON/OFF Pin=5V(OFF)",
          "source_page": 9,
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          "name": "ON/OFF Pin Input Current (low, ON)",
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          "unit": "µA",
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          "max": 10,
          "conditions": "ON/OFF Pin=0V(ON)",
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        {
          "name": "Operating Temperature Range (junction)",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
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        {
          "name": "Supply Voltage (LM2576)",
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          "min": 4.5,
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          "max": 40,
          "conditions": "",
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        {
          "name": "Maximum Supply Voltage (LM2576)",
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          "unit": "V",
          "min": null,
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          "max": 45,
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        {
          "name": "ON/OFF Pin Input Voltage (-0.3 ≤ V ≤ +VIN)",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
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          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Output Voltage to Ground (Steady State)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -1,
          "typ": null,
          "max": null,
          "conditions": "Steady state",
          "source_page": 4,
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        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "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": "Minimum ESD Rating",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "C=100pF, R=1.5kΩ",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (Soldering)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "Soldering, 10 seconds",
          "source_page": 4,
          "source": "datasheet"
        }
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      "mpn": "LM2576S-5.0S",
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  "updated_at": "2026-09-25T00:11:26.746Z"
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