LM2575HVS-3.3

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm2575hvs-3-3",
  "title": "LM2575HVS-3.3",
  "brief": "UMW 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": [
    "component",
    "pmic",
    "lm2575hvs-3.3"
  ],
  "component": {
    "mpn": "LM2575HVS-3.3",
    "manufacturer": "UMW",
    "package": "TO-263-5",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2311091734_UMW-Youtai-Semiconductor-Co---Ltd--LM2575HVS-3-3_C347428.pdf",
    "parts": {
      "symbol": "lm2575hvs-3-3.kicad_sym",
      "footprint": "lm2575hvs-3-3.kicad_mod",
      "model_3d": "lm2575hvs-3-3-etched.glb",
      "model_3d_plain": "lm2575hvs-3-3.glb",
      "model_3d_step": "lm2575hvs-3-3-etched.step",
      "model_3d_step_plain": "lm2575hvs-3-3.step",
      "lbr": "lm2575hvs-3-3.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage. Accepts unregulated DC from 4.75V up to 60V for the HV variant (absolute max 63V). Bypass locally with a low-ESR bulk capacitor (typ. 680 μF for the 3.3V circuit)."
      },
      {
        "number": "2",
        "name": "Output",
        "type": "output",
        "description": "Switching output of the internal 2A power switch. Connects to the external catch diode (e.g. 1N5824 Schottky) and buck inductor (typ. 33 μH) that filter it into the regulated 3.3V rail. Rated 2A continuous with internal current limit; can swing to -1V during freewheel."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Common return for input, output and control circuitry. Also the primary thermal path through the tab of the TO-263 package."
      },
      {
        "number": "4",
        "name": "Feedback",
        "type": "input",
        "description": "Output-voltage sense input for the internal error amplifier. On the fixed 3.3V version this pin ties directly to the regulated output node so the internal divider regulates VOUT to 3.3V (±4% over line and load)."
      },
      {
        "number": "5",
        "name": "ON/OFF",
        "type": "input",
        "description": "TTL-compatible shutdown control. Active low or floating enables the regulator; driving high (up to VIN, absolute max +VIN) forces the device into low-power standby mode (IQ typ. 50 μA). Do not exceed VIN on this pin."
      },
      {
        "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"
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2311091734_UMW-Youtai-Semiconductor-Co---Ltd--LM2575HVS-3-3_C347428.pdf",
        "pages": 30,
        "sha256": "b0c31af439f0b6b9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -7.65,
        -3.4
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TO-263-5_TabPin6@sha256:77e8ff2d643255fc",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "lm2575hvs-3-3.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          15,
          10,
          4.42
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "94c2a3dc1aaad85b6b5193f97d9a7c61b4e28bac25952a1e629557bcf747e246",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm2575hvs-3-3-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          15,
          10,
          4.42
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9593b97a77d24f3e536e852df2612580cd80c0326af7af54a25f94f8867defee",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "UMW",
      "Package": "TO-263-5",
      "Category": "PMIC",
      "Pins": "5"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm2575hvs-3.3"
  ],
  "discovery_pitch": "LM2575HVS-3.3 (UMW) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm2575hvs-3-3.kicad_sym",
    "lm2575hvs-3-3.kicad_mod",
    "lm2575hvs-3-3.glb",
    "lm2575hvs-3-3.step",
    "lm2575hvs-3-3-etched.step",
    "lm2575hvs-3-3.lbr",
    "docs/hero.png",
    "docs/lm2575hvs-3-3-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "variants": [
    {
      "mpn": "LM2575HVS-3.3",
      "kind": "packaging"
    },
    {
      "mpn": "LM2575S-3.3",
      "kind": "unknown"
    },
    {
      "mpn": "LM2575HVS-5.0",
      "kind": "different-part"
    },
    {
      "mpn": "LM2575S-5.0",
      "kind": "different-part"
    },
    {
      "mpn": "LM2575HVS-12",
      "kind": "different-part"
    },
    {
      "mpn": "LM2575S-12",
      "kind": "different-part"
    },
    {
      "mpn": "LM2575HVS-ADJ",
      "kind": "different-part"
    },
    {
      "mpn": "LM2575S-ADJ",
      "kind": "different-part"
    },
    {
      "mpn": "LM2575HVT-3.3",
      "kind": "unknown"
    },
    {
      "mpn": "LM2575T-3.3",
      "kind": "unknown"
    },
    {
      "mpn": "LM2575HVT-5.0",
      "kind": "different-part"
    },
    {
      "mpn": "LM2575T-5.0",
      "kind": "different-part"
    },
    {
      "mpn": "LM2575HVT-12",
      "kind": "different-part"
    },
    {
      "mpn": "LM2575T-12",
      "kind": "different-part"
    },
    {
      "mpn": "LM2575HVT-ADJ",
      "kind": "different-part"
    },
    {
      "mpn": "LM2575T-ADJ",
      "kind": "different-part"
    }
  ],
  "updated_at": "2026-09-25T00:08:58.236Z"
}