LM2576R-3.3

{
  "slug": "lm2576r-3-3",
  "version": "0.1.0",
  "type": "component",
  "description": "HTC Korea TAEJIN Tech DC-DC Converters, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lm2576r-3.3",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm2576r-3-3.kicad_sym",
    "lm2576r-3-3.kicad_mod",
    "lm2576r-3-3.glb",
    "lm2576r-3-3.step",
    "lm2576r-3-3.lbr",
    "docs/hero.png",
    "docs/lm2576r-3-3-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm2576r-3-3-hero.glb",
    "lm2576r-3-3-hero.overlay.json",
    "lm2576r-3-3-etched.glb"
  ],
  "component": {
    "mpn": "LM2576R-3.3",
    "manufacturer": "HTC Korea TAEJIN Tech",
    "package": "TO-263-5",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586177933891276800",
    "parts": {
      "symbol": "lm2576r-3-3.kicad_sym",
      "footprint": "lm2576r-3-3.kicad_mod",
      "model_3d": "lm2576r-3-3-hero.glb",
      "model_3d_plain": "lm2576r-3-3-etched.glb",
      "model_3d_step": "lm2576r-3-3-etched.step",
      "model_3d_step_plain": "lm2576r-3-3.step",
      "lbr": "lm2576r-3-3.lbr"
    },
    "distributor_links": {
      "lcsc": "C91093",
      "digikey": "5536-LM2576R-3.3TR-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T02:55:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "5536-LM2576R-3.3TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Positive input supply for the LM2576 step-down switching regulator; a suitable input bypass capacitor (Cin) must be present to minimize voltage transients and supply the regulator's switching currents. Operating supply voltage is up to 40 V, with an absolute maximum of 45 V."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Emitter of the internal output switch with a typical saturation voltage VSAT of 1.5 V; PCB area connected to this pin should be kept to a minimum to reduce coupling to sensitive circuitry."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Circuit ground pin; see the printed circuit board layout information in the datasheet."
      },
      {
        "number": "4",
        "name": "FEEDBACK",
        "type": "input",
        "description": "Senses the regulated output voltage to close the feedback loop; on the fixed-output versions it is divided internally by R2/R1 and applied to the error amplifier's non-inverting input."
      },
      {
        "number": "5",
        "name": "ON/OFF",
        "type": "input",
        "description": "Logic-level shutdown input with a typical threshold of 1.4 V: applying a voltage above this (up to +Vin) turns the regulator off, while a voltage below 1.4 V or an open pin leaves it on, with total input supply current dropping to about 80 uA in shutdown."
      },
      {
        "number": "6",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet pin table (page 3) shows one pin-number column shared by the TO-220 5L and TO-263 5L p; Pin 3 is GND in the datasheet's pin table, while the mapping also places GND at pin 6 for SOP8-PP; t",
          "exposed pad 6 added from the footprint"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0533,
        "at": "2026-10-19T02:52:02"
      },
      "datasheet": {
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        "pages": 11,
        "sha256": "2acb3c8a94295de6",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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    "models_3d": [
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "94c2a3dc1aaad85b6b5193f97d9a7c61b4e28bac25952a1e629557bcf747e246",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm2576r-3-3-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "cbe1bf4304bd27a08a0c93ecb16c317364082e15debefbd4a3776851c0677cb8",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}