TD1534

{
  "schema_version": 1,
  "type": "component",
  "slug": "td1534",
  "title": "TD1534",
  "brief": "Techcode Semicon DC-DC Converters, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "td1534",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "TD1534",
    "manufacturer": "Techcode Semicon",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588910709505724416",
    "parts": {
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      "lbr": "td1534.lbr"
    },
    "distributor_links": {
      "lcsc": "C232920"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T23:36:53Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Feedback input: an external resistor divider senses the output voltage and regulates it to a feedback threshold of 0.8V."
      },
      {
        "number": "2",
        "name": "EN",
        "type": "input",
        "description": "Enable digital input: drive high to turn the regulator on and low to turn it off (datasheet gives a 0.7V low threshold, a 1.3V high threshold, and a 12V maximum pin voltage)."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the datasheet assigns no function to this pin."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input operating from 1.0V to 20V DC; bypass VIN to GND with a suitably large capacitor to eliminate input noise."
      },
      {
        "number": "5",
        "name": "SW",
        "type": "output",
        "description": "Power switch output (switch node) that supplies power to the output; keep its copper area small to limit coupling into sensitive circuitry."
      },
      {
        "number": "6",
        "name": "SW",
        "type": "output",
        "description": "Power switch output (switch node) that supplies power to the output; keep its copper area small to limit coupling into sensitive circuitry."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin; route it so it sits outside the Schottky diode to output capacitor ground path to prevent switching current spikes from injecting noise into the IC."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin; route it so it sits outside the Schottky diode to output capacitor ground path to prevent switching current spikes from injecting noise into the IC."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin configuration Figure 2 is an image and was not available as text; the pinout above is taken from; Input voltage conflict: the VIN pin description says 1.0V to 20V, but the Recommended Operating Cond; Pins 5/6 (SW) and 7/8 (GND) are each listed as a pair in the datasheet table; both pins of each pair"
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        "at": "2026-10-17T23:34:57"
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      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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  "metadata": {
    "specs": {
      "Manufacturer": "Techcode Semicon",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "appearance": {
      "contacts": {
        "quote": "this is the output (switch) pin, which should not have large areas of copper.) Large areas of copper provide the",
        "page": 11,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
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    "characteristics": {
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          "name": "Input Voltage",
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          "max": 20,
          "conditions": "",
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        },
        {
          "name": "Operating Junction Temperature",
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          "unit": "ºC",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
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        },
        {
          "name": "Operating Ambient Temperature",
          "symbol": "TA",
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          "unit": "ºC",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
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          "name": "Input Voltage",
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        {
          "name": "Feedback Pin Voltage",
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        {
          "name": "Switch Pin Voltage",
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        {
          "name": "Operating Junction Temperature",
          "symbol": "TJ",
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          "unit": "ºC",
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        },
        {
          "name": "Storage Temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "ºC",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Lead Temperature (Soldering)",
          "symbol": "TLEAD",
          "kind": "absolute_maximum",
          "unit": "ºC",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10 sec soldering",
          "source_page": 4,
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        },
        {
          "name": "ESD (HBM)",
          "symbol": "",
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          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2000,
          "conditions": "HBM",
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        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "electrical",
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          "min": 3.6,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "Shutdown Supply Current",
          "symbol": "ISTBY",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": 30,
          "max": 90,
          "conditions": "VEN=0V",
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          "source": "datasheet"
        },
        {
          "name": "Supply Current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3.6,
          "max": 4,
          "conditions": "VEN=2V, VFB=1.3V",
          "source_page": 5,
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        },
        {
          "name": "Feedback Voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 0.776,
          "typ": 0.8,
          "max": 0.824,
          "conditions": "VIN = 3.6V to 20V",
          "source_page": 5,
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        },
        {
          "name": "Feedback Bias Current",
          "symbol": "IFB",
          "kind": "electrical",
          "unit": "uA",
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          "typ": 0.1,
          "max": 0.5,
          "conditions": "VFB=1.3V",
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        },
        {
          "name": "Switch Current Limit",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "A",
          "min": 3,
          "typ": null,
          "max": 4,
          "conditions": "",
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        },
        {
          "name": "Oscillator Frequency",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "KHz",
          "min": 320,
          "typ": 380,
          "max": 440,
          "conditions": "",
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        },
        {
          "name": "EN Pin Threshold",
          "symbol": "VEN",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": 1.2,
          "max": 1.7,
          "conditions": "VIN =12V, VFB=0V",
          "source_page": 5,
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        },
        {
          "name": "EN Pin Input Leakage Current (high)",
          "symbol": "IH",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": -0.1,
          "max": -1,
          "conditions": "VEN=2.5V",
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        },
        {
          "name": "EN Pin Input Leakage Current (low)",
          "symbol": "IL",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": -3,
          "max": -10,
          "conditions": "VEN=0.5V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Max. Duty Cycle",
          "symbol": "DMAX",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "VFB=0V, ISW=0.1A",
          "source_page": 5,
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        },
        {
          "name": "Efficiency",
          "symbol": "η",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 92,
          "max": null,
          "conditions": "VIN=12V, Vout=5V, Iout=2A",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown",
          "symbol": "TOTSD",
          "kind": "electrical",
          "unit": "ºC",
          "min": null,
          "typ": 165,
          "max": null,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "Internal PMOS RDSON",
          "symbol": "RDSON",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 140,
          "max": null,
          "conditions": "VIN =12V, VFB=0V, VEN=12V, Iout=2A",
          "source_page": 5,
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        {
          "name": "Frequency of Current Limit or Short Circuit Protection",
          "symbol": "FOSC1",
          "kind": "electrical",
          "unit": "KHz",
          "min": null,
          "typ": 42,
          "max": null,
          "conditions": "VFB=0V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance-Junction to Ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "ºC/W",
          "min": null,
          "typ": 85,
          "max": null,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Thermal Resistance-Junction to Case",
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          "kind": "thermal",
          "unit": "ºC/W",
          "min": null,
          "typ": 45,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
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    "email": "[email protected]"
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