LM2596R-12

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm2596r-12",
  "title": "LM2596R-12",
  "brief": "HTC Korea TAEJIN Tech 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",
    "lm2596r-12"
  ],
  "component": {
    "mpn": "LM2596R-12",
    "manufacturer": "HTC Korea TAEJIN Tech",
    "package": "TO-263-5",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a11be599896b4edfa160807cc8c6b836.pdf",
    "parts": {
      "symbol": "lm2596r-12.kicad_sym",
      "footprint": "lm2596r-12.kicad_mod",
      "model_3d": "lm2596r-12-etched.glb",
      "model_3d_plain": "lm2596r-12.glb",
      "model_3d_step": "lm2596r-12-etched.step",
      "model_3d_step_plain": "lm2596r-12.step",
      "lbr": "lm2596r-12.lbr"
    },
    "distributor_links": {
      "lcsc": "C90691"
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Positive input supply for the step-down regulator. Absolute max 45V, operating up to 40V. Requires a suitable input bypass capacitor (typ. 470uF/50V aluminum electrolytic) to minimize voltage transients and supply the switching currents."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "output",
        "description": "Emitter of the internal 3A NPN switch; connects to the external inductor and catch-diode cathode of the buck power stage. Typical saturation voltage Vsat ~1.16V at 3A. PCB area on this node should be minimized to reduce coupling to sensitive circuitry."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Circuit ground return for the regulator. Should tie to the ground plane via a short, low-inductance path close to the input and output capacitor grounds."
      },
      {
        "number": "4",
        "name": "FEEDBACK",
        "type": "input",
        "description": "Senses the regulated output voltage to close the control loop. In the fixed 12V version, an internal resistor divider (R2, R1) scales VOUT to the internal 1.23V reference at the error amplifier non-inverting input. Connect this pin directly to the regulated 12V output node. Feedback bias current is typically 12nA."
      },
      {
        "number": "5",
        "name": "ON/OFF",
        "type": "input",
        "description": "TTL-compatible active-high shutdown input. Threshold ~1.3V typ; VIH >= 2.0V forces the regulator OFF (standby quiescent current typ 80uA), VIL <= 0.6V or left open keeps the regulator ON. Input voltage must be within -0.3V to +Vin. Tie to GND for always-on operation."
      },
      {
        "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://datasheet.lcsc.com/datasheet/pdf/a11be599896b4edfa160807cc8c6b836.pdf",
        "pages": 8,
        "sha256": "c89f43dda8481acd",
        "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": "lm2596r-12.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": "lm2596r-12-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": "d170c29e7f8c1ff32e472eddfe363effdeb910f78f0cccf00968ce451bd6f91e",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HTC Korea TAEJIN Tech",
      "Package": "TO-263-5",
      "Category": "PMIC",
      "Pins": "5"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm2596r-12"
  ],
  "discovery_pitch": "LM2596R-12 (HTC Korea TAEJIN Tech) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm2596r-12.kicad_sym",
    "lm2596r-12.kicad_mod",
    "lm2596r-12.glb",
    "lm2596r-12.step",
    "lm2596r-12-etched.step",
    "lm2596r-12.lbr",
    "docs/hero.png",
    "docs/lm2596r-12-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "variants": [
    {
      "mpn": "LM2596R-ADJ",
      "kind": "different-part"
    },
    {
      "mpn": "LM2596R-3.3",
      "kind": "different-part"
    },
    {
      "mpn": "LM2596R-5.0",
      "kind": "different-part"
    },
    {
      "mpn": "LM2596R-12",
      "kind": "packaging"
    },
    {
      "mpn": "LM2596T-ADJ",
      "kind": "different-part"
    },
    {
      "mpn": "LM2596T-3.3",
      "kind": "different-part"
    },
    {
      "mpn": "LM2596T-5.0",
      "kind": "different-part"
    },
    {
      "mpn": "LM2596T-12",
      "kind": "unknown"
    },
    {
      "mpn": "LM2596DP-ADJ",
      "kind": "different-part"
    },
    {
      "mpn": "LM2596DP-3.3",
      "kind": "different-part"
    },
    {
      "mpn": "LM2596DP-5.0",
      "kind": "different-part"
    },
    {
      "mpn": "LM2596DP-12",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-28T16:14:54.297Z"
}