TD1501S50

{
  "schema_version": 1,
  "type": "component",
  "slug": "td1501s50",
  "title": "TD1501S50",
  "brief": "Techcode Semicon 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",
    "td1501s50"
  ],
  "component": {
    "mpn": "TD1501S50",
    "manufacturer": "Techcode Semicon",
    "package": "TO-263-5",
    "pin_count": 6,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/45043b2d3a672cb4cafd25eaa7447051.pdf",
    "parts": {
      "symbol": "td1501s50.kicad_sym",
      "footprint": "td1501s50.kicad_mod",
      "model_3d": "td1501s50-etched.glb",
      "model_3d_plain": "td1501s50.glb",
      "model_3d_step": "td1501s50-etched.step",
      "model_3d_step_plain": "td1501s50.step",
      "lbr": "td1501s50.lbr"
    },
    "distributor_links": {
      "lcsc": "C141856"
    },
    "pins": [
      {
        "number": "1",
        "name": "Vin",
        "type": "power_in",
        "description": "Input supply voltage. Recommended operating range 7V to 45V (5V version); absolute maximum 45V. Bypass with a low-ESR input capacitor close to the pin."
      },
      {
        "number": "2",
        "name": "Output",
        "type": "output",
        "description": "Switching output pin - internal power BJT emitter. Connects to the external catch diode cathode and inductor to form the buck power stage. Delivers up to 3A load current with typical saturation voltage of 1.2V at 3A."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device. Tie to the system ground plane; also serves as the thermal path together with the package tab."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback pin. Internally connected to the fixed-5V resistor divider on the 5V version; connect directly to the regulator output node. Feedback bias current typically 10nA."
      },
      {
        "number": "5",
        "name": "ON/OFF",
        "type": "input",
        "description": "TTL-compatible shutdown control. Regulator is ON when the pin is low (<1.3V typ) or left floating; regulator enters standby (IQ ≈ 80µA) when driven high (>2.0V). Absolute max Vin+0.3V."
      },
      {
        "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/45043b2d3a672cb4cafd25eaa7447051.pdf",
        "pages": 18,
        "sha256": "c0e40074baddb703",
        "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": "td1501s50.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": "td1501s50-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": "6091c770fb6bc06f14de93008c596db96b4cad17a4f978338a115b270dce3dcd",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Techcode Semicon",
      "Package": "TO-263-5",
      "Category": "PMIC",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "c0e40074baddb703",
      "rows": [
        {
          "name": "Input Voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.6,
          "typ": null,
          "max": 45,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "ºC",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Ambient Temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "ºC",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 45,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Feedback Pin Voltage",
          "symbol": "VFB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "upper limit printed as Vin+0.3 V (not numeric)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF Pin Voltage",
          "symbol": "VEN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "upper limit printed as Vin+0.3 V (not numeric)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Pin Voltage",
          "symbol": "VSW",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "upper limit printed as Vin+0.3 V (not numeric)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "ºC",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "ºC",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (Soldering)",
          "symbol": "TLEAD",
          "kind": "absolute_maximum",
          "unit": "ºC",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "soldering, 10 sec",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ESD (HBM)",
          "symbol": "ESD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2000,
          "conditions": "HBM",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Oscillator frequency",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "KHz",
          "min": 127,
          "typ": 150,
          "max": 173,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Saturation voltage",
          "symbol": "VSAT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.2,
          "max": 1.5,
          "conditions": "IOUT=3A",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Current Limit",
          "symbol": "ICL",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 4.5,
          "max": 6.5,
          "conditions": "Peak Current (VFB=0V)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 5,
          "max": 10,
          "conditions": "VFB=12V force driver off",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Standby quiescent current",
          "symbol": "ISTBY",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 80,
          "max": 250,
          "conditions": "ON/OFF=5V, VIN=36V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current",
          "symbol": "IL",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "Output=0V (VFB=12V)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output leakage current",
          "symbol": "IL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2,
          "max": 30,
          "conditions": "Output=-1V (VIN=36V)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage (TD1501 5V)",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "V",
          "min": 4.75,
          "typ": 5,
          "max": 5.25,
          "conditions": "7V ≤ VIN ≤ 45V, 0.2A ≤ ILOAD≤3A",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF pin logic input threshold voltage Low (Regulator ON)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.3,
          "conditions": "Low (Regulator ON)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF pin logic input threshold voltage High (Regulator OFF)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "High (Regulator OFF)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF pin input current High (Regulator OFF)",
          "symbol": "IH",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 5,
          "max": 15,
          "conditions": "VLOGIC=2.5V (Regulator OFF)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "ON/OFF pin input current Low (Regulator ON)",
          "symbol": "IL",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 0.02,
          "max": 5,
          "conditions": "VLOGIC=0.5V (Regulator ON)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction to Case",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "ºC/W",
          "min": null,
          "typ": 3.5,
          "max": null,
          "conditions": "TO263-5L",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction to Ambient",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "ºC/W",
          "min": null,
          "typ": 23,
          "max": null,
          "conditions": "TO263-5L, Note1: copper area approximately 3 in2",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Efficiency",
          "symbol": "η",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 83,
          "max": null,
          "conditions": "VIN=12V, ILOAD=3A",
          "source_page": 6,
          "source": "datasheet"
        }
      ]
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "td1501s50"
  ],
  "discovery_pitch": "TD1501S50 (Techcode Semicon) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "td1501s50.kicad_sym",
    "td1501s50.kicad_mod",
    "td1501s50.glb",
    "td1501s50.step",
    "td1501s50-etched.step",
    "td1501s50.lbr",
    "docs/hero.png",
    "docs/td1501s50-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "variants": [
    {
      "mpn": "TD1501S50",
      "kind": "packaging"
    },
    {
      "mpn": "TD1501S50L50",
      "kind": "packaging"
    },
    {
      "mpn": "TD1501S50T50",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T09:33:10.696Z"
}