UC3524D

{
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  "type": "component",
  "slug": "uc3524d",
  "title": "UC3524D",
  "brief": "Texas Instruments DC-DC Converters, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management (pmic)",
    "uc3524d",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "UC3524D",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/uc3524",
    "parts": {
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      "lbr": "uc3524d.lbr"
    },
    "distributor_links": {
      "lcsc": "C2863447",
      "digikey": "2156-UC3524D-ND",
      "mouser": "595-UC3524D"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T16:31:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-UC3524D-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UC3524D",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "INV INPUT",
        "type": "input",
        "description": "Inverting input of the error amplifier, which is compared against the non-inverting input and the internal reference divider network."
      },
      {
        "number": "2",
        "name": "NON INV INPUT",
        "type": "input",
        "description": "Non-inverting input of the error amplifier; the error amplifier common-mode range is 1.8 V to 3.4 V at TJ = 25°C."
      },
      {
        "number": "3",
        "name": "OSC OUT",
        "type": "output",
        "description": "Oscillator output that also serves as the output blanking pulse; it can be driven by an external clock of about 3 V with approximately 2 kΩ impedance to ground, and up to 100 pF shunt capacitance may be added to increase dead time."
      },
      {
        "number": "4",
        "name": "CL SENSE(+)",
        "type": "input",
        "description": "Non-inverting input of the current-limit comparator; the sense voltage is 200 mV typical with the error amplifier at maximum output, and the common-mode range is -1 V to 1 V."
      },
      {
        "number": "5",
        "name": "CL SENSE(-)",
        "type": "input",
        "description": "Inverting input of the current-limit comparator, used with pin 4 to sense load current; the common-mode range is -1 V to 1 V."
      },
      {
        "number": "6",
        "name": "RT",
        "type": "passive",
        "description": "Timing resistor pin that sets the oscillator charging current together with CT; practical values are 1.8 kΩ to 100 kΩ (recommended range 1.8 kΩ to 100 kΩ)."
      },
      {
        "number": "7",
        "name": "CT",
        "type": "passive",
        "description": "Timing capacitor pin that sets the oscillator ramp and blanking width; recommended value is 0.001 µF to 0.1 µF and current through the CT terminal is limited to -0.03 mA to -2 mA."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground terminal; all voltages in the datasheet are referenced to this pin."
      },
      {
        "number": "9",
        "name": "COMP",
        "type": "passive",
        "description": "Compensation node shared by the error amplifier output and the current-limit/shutdown inputs, used to set error amplifier gain or compensation."
      },
      {
        "number": "10",
        "name": "S/D",
        "type": "input",
        "description": "Shutdown input that overrides the error amplifier output through the comparator to disable the outputs."
      },
      {
        "number": "11",
        "name": "EA",
        "type": "output",
        "description": "Emitter output of output transistor A, rated for 40 V collector-emitter and 100 mA maximum collector output current."
      },
      {
        "number": "12",
        "name": "CA",
        "type": "output",
        "description": "Collector of output transistor A, rated at 40 V collector-emitter and 100 mA maximum collector output current."
      },
      {
        "number": "13",
        "name": "CB",
        "type": "output",
        "description": "Collector of output transistor B, rated at 40 V collector-emitter and 100 mA maximum collector output current."
      },
      {
        "number": "14",
        "name": "EB",
        "type": "output",
        "description": "Emitter output of output transistor B, rated for 40 V collector-emitter and 100 mA maximum collector output current."
      },
      {
        "number": "15",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply voltage input, 8 V to 40 V recommended, with 40 V absolute maximum referenced to pin 8."
      },
      {
        "number": "16",
        "name": "VREF",
        "type": "power_out",
        "description": "5 V reference output, recommended to source 0 mA to 20 mA (50 mA absolute maximum)."
      }
    ],
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        "guard_notes": [
          "extractor flagged: The connection diagram text extraction is garbled. Pin assignments were reconstructed from the conne; The UC3524D is the narrow-body D package, but the text only contains the DW0016A package drawing (wi; Pin descriptions for pins 1, 2, 4, 5, 9, 10 and 11-14 are inferred from function labels and the sect"
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        "at": "2026-10-08T16:31:10"
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        "pages": 18,
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        "source_tier": "lcsc"
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        "total": 16,
        "described": 16,
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  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-16",
      "Category": "Power Management (PMIC)",
      "Pins": "16"
    },
    "characteristics": {
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          "name": "Reference output current",
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        {
          "name": "Operating ambient temperature range",
          "symbol": "",
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          "unit": "°C",
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          "name": "Collector output current",
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          "name": "Reference output current",
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          "name": "Current through CT terminal",
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        {
          "name": "Power dissipation",
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          "unit": "mW",
          "min": null,
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          "max": 1000,
          "conditions": "TA = 25°C",
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        {
          "name": "Power dissipation",
          "symbol": "",
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          "conditions": "TC = 25°C",
          "source_page": 2,
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        },
        {
          "name": "Operating junction temperature range",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
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        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
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          "conditions": "",
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        {
          "name": "Output voltage (reference)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 4.6,
          "typ": 5,
          "max": 5.4,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "",
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          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 30,
          "conditions": "VIN = 8 V to 40 V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Load regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
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          "max": 50,
          "conditions": "IL = 0 mA to 20 mA",
          "source_page": 3,
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        {
          "name": "Temperature stability",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
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          "conditions": "Over operating temperature range",
          "source_page": 3,
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        {
          "name": "Input offset voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 2,
          "max": 10,
          "conditions": "VCM = 2.5 V",
          "source_page": 3,
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        {
          "name": "Input bias current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
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          "max": 10,
          "conditions": "VCM = 2.5 V",
          "source_page": 3,
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        },
        {
          "name": "Open loop voltage gain",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 80,
          "max": null,
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        {
          "name": "Common mode voltage",
          "symbol": "",
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          "unit": "V",
          "min": 1.8,
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          "max": 3.4,
          "conditions": "TJ = 25°C",
          "source_page": 3,
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        {
          "name": "Output voltage (error amplifier)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.5,
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          "max": 3.8,
          "conditions": "TJ = 25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Duty-cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 0,
          "typ": null,
          "max": 45,
          "conditions": "Each output on",
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        {
          "name": "Sense voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": 180,
          "typ": 200,
          "max": 220,
          "conditions": "Pin 9 = 2 V with error amplifier set for maximum out, TJ = 25°C",
          "source_page": 3,
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        {
          "name": "Common mode voltage (current limiting)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "TJ = –55°C to 85°C for the –1 V to 1 V limit",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector leakage current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": 50,
          "conditions": "VCE = 40 V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Saturation voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
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          "max": 2,
          "conditions": "IC = 50 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Emitter output voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 17,
          "typ": 18,
          "max": null,
          "conditions": "VIN = 20 V",
          "source_page": 3,
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        },
        {
          "name": "Total standby current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 8,
          "max": 10,
          "conditions": "VIN = 40 V",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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    "name": "Ray",
    "email": "[email protected]"
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