3525

{
  "schema_version": 1,
  "type": "component",
  "slug": "3525",
  "title": "3525",
  "brief": "IDCHIP DC-DC Converters, SOP-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": [
    "component",
    "power management ics",
    "3525",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "3525",
    "manufacturer": "IDCHIP",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8ce4ae7cc44b8c370e5875951d6d0a18.pdf",
    "parts": {
      "symbol": "3525.kicad_sym",
      "footprint": "3525.kicad_mod",
      "model_3d": "3525-hero.glb",
      "model_3d_plain": "3525-etched.glb",
      "model_3d_step": "3525-etched.step",
      "model_3d_step_plain": "3525.step",
      "lbr": "3525.lbr"
    },
    "distributor_links": {
      "lcsc": "C395463",
      "mouser": "534-3525"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T00:54:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": "534-3525",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Inv. Input",
        "type": "input",
        "description": "Inverting input of the error amplifier, whose common-mode range is +1.5 V to +5.2 V."
      },
      {
        "number": "2",
        "name": "Noninv. Input",
        "type": "input",
        "description": "Non-inverting input of the error amplifier, whose common-mode range is +1.5 V to +5.2 V."
      },
      {
        "number": "3",
        "name": "Sync",
        "type": "input",
        "description": "Synchronization input that locks the internal oscillator to an external clock or enables master/slave operation."
      },
      {
        "number": "4",
        "name": "OSC Output",
        "type": "output",
        "description": "Oscillator output that provides the clock signal for synchronizing slave devices."
      },
      {
        "number": "5",
        "name": "CT",
        "type": "passive",
        "description": "Oscillator timing capacitor, specified from 0.001 µF to 0.2 µF."
      },
      {
        "number": "6",
        "name": "RT",
        "type": "passive",
        "description": "Oscillator timing resistor, specified from 2.0 kΩ to 150 kΩ."
      },
      {
        "number": "7",
        "name": "Discharge",
        "type": "passive",
        "description": "Dead-time discharge pin connected to the dead-time resistor RD, which is specified from 0 Ω to 500 Ω."
      },
      {
        "number": "8",
        "name": "Soft-Start",
        "type": "passive",
        "description": "Soft-start pin with a pull-up current source whose capacitor is discharged at about 100 µA during shutdown."
      },
      {
        "number": "9",
        "name": "Compensation",
        "type": "passive",
        "description": "Error amplifier compensation pin with a pull-up current source; a pull-down of up to 100 µA shuts off the outputs."
      },
      {
        "number": "10",
        "name": "Shutdown",
        "type": "input",
        "description": "Shutdown input in which a high level immediately latches the PWM and discharges the soft-start capacitor, and which must not be left floating."
      },
      {
        "number": "11",
        "name": "Output A",
        "type": "output",
        "description": "Output A, a totem-pole driver rated for ±400 mA peak that alternates with Output B."
      },
      {
        "number": "12",
        "name": "Ground",
        "type": "power_in",
        "description": "Ground return for the device."
      },
      {
        "number": "13",
        "name": "VC",
        "type": "power_in",
        "description": "Output stage supply, specified from 4.5 V to 35 V."
      },
      {
        "number": "14",
        "name": "Output B",
        "type": "output",
        "description": "Output B, a totem-pole driver rated for ±400 mA peak that alternates with Output A."
      },
      {
        "number": "15",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input, specified from 8.0 V to 35 V."
      },
      {
        "number": "16",
        "name": "Vref",
        "type": "power_out",
        "description": "Reference output at 5.1 V ±1.0%, with a load current of 0 mA to 20 mA."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "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 MPN 3525 is not an exact orderable part number in this datasheet, which lists SG3525AN (plastic ; The printed pin-name list on page 1 is not tied to pin numbers in the text. Pin numbers were assigne",
          "1/16 pins cited to the wrong page (name found elsewhere): ['12:Ground@p1']"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0229,
        "at": "2026-10-28T00:54:01"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/8ce4ae7cc44b8c370e5875951d6d0a18.pdf",
        "pages": 7,
        "sha256": "da8d2eb9e542155d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "3525-etched.step",
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        "sha256": "399f782c75591ab48dd01baafc8b0a2fb43f92919477e84dbde7b554ceb75932",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "IDCHIP",
      "Package": "SOP-16",
      "Category": "Power Management ICs",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "da8d2eb9e542155d022224f503e21063b629bdcf1e8e0695853221731d36fb20",
      "rows": [
        {
          "name": "Absolute maximum VCC supply voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "Vdc",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Absolute maximum collector supply voltage",
          "symbol": "VC",
          "kind": "absolute_maximum",
          "unit": "Vdc",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
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        {
          "name": "Absolute maximum logic input voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
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        {
          "name": "Absolute maximum analog input voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "to VCC",
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        {
          "name": "Absolute maximum output current",
          "symbol": "IO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -500,
          "typ": null,
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        {
          "name": "Absolute maximum reference output current",
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        {
          "name": "Absolute maximum oscillator charging current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 5,
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        },
        {
          "name": "Power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "TA = +25°C (derate 10 mW/°C above +50°C)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 2000,
          "conditions": "TC = +25°C (derate 16 mW/°C above +25°C case)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 100,
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        },
        {
          "name": "Thermal resistance junction to case",
          "symbol": "RθJC",
          "kind": "thermal",
          "unit": "°C/W",
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          "typ": null,
          "max": 60,
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        {
          "name": "Operating junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Soldering temperature",
          "symbol": "TSolder",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "10 seconds",
          "source_page": 2,
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        },
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "Vdc",
          "min": 8,
          "typ": null,
          "max": 35,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector supply voltage",
          "symbol": "VC",
          "kind": "recommended_operating",
          "unit": "Vdc",
          "min": 4.5,
          "typ": null,
          "max": 35,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Output current",
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          "kind": "recommended_operating",
          "unit": "mA",
          "min": 0,
          "typ": null,
          "max": 100,
          "conditions": "",
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        {
          "name": "Output current, peak",
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          "typ": null,
          "max": 400,
          "conditions": "",
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        },
        {
          "name": "Reference load current",
          "symbol": "Iref",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": 0,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Oscillator frequency range",
          "symbol": "fosc",
          "kind": "recommended_operating",
          "unit": "kHz",
          "min": 0.1,
          "typ": null,
          "max": 400,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Timing resistor range",
          "symbol": "RT",
          "kind": "recommended_operating",
          "unit": "kΩ",
          "min": 2,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Timing capacitor range",
          "symbol": "CT",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 0.001,
          "typ": null,
          "max": 0.2,
          "conditions": "",
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        },
        {
          "name": "Deadtime resistor range",
          "symbol": "RD",
          "kind": "recommended_operating",
          "unit": "Ω",
          "min": 0,
          "typ": null,
          "max": 500,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 70,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Reference output voltage",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "Vdc",
          "min": 5,
          "typ": 5.1,
          "max": 5.2,
          "conditions": "VCC = +20 V, TJ = +25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "Regline",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 20,
          "conditions": "+8.0 V ≤ VCC ≤ +35 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "Regload",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 20,
          "max": 50,
          "conditions": "0 mA ≤ IL ≤ 20 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Temperature stability of reference",
          "symbol": "ΔVref/ΔT",
          "kind": "temperature_coefficient",
          "unit": "mV",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Short circuit current",
          "symbol": "ISC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 80,
          "max": 100,
          "conditions": "Vref = 0 V, TJ = +25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output noise voltage",
          "symbol": "Vn",
          "kind": "electrical",
          "unit": "µVrms",
          "min": null,
          "typ": 40,
          "max": 200,
          "conditions": "10 Hz ≤ f ≤ 10 kHz, TJ = +25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Long term stability",
          "symbol": "S",
          "kind": "electrical",
          "unit": "mV/khr",
          "min": null,
          "typ": 20,
          "max": 50,
          "conditions": "TJ = +125°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Initial accuracy",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 2,
          "max": 6,
          "conditions": "TJ = +25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Voltage frequency stability",
          "symbol": "ΔfOSC/ΔVCC",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 1,
          "max": 2,
          "conditions": "+8.0 V ≤ VCC ≤ +35 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Temperature frequency stability",
          "symbol": "ΔfOSC/ΔT",
          "kind": "temperature_coefficient",
          "unit": "%",
          "min": null,
          "typ": 0.3,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum oscillator frequency",
          "symbol": "fmin",
          "kind": "timing",
          "unit": "Hz",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "RT = 150 kΩ, CT = 0.2 µF",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum oscillator frequency",
          "symbol": "fmax",
          "kind": "timing",
          "unit": "kHz",
          "min": 400,
          "typ": null,
          "max": null,
          "conditions": "RT = 2.0 kΩ, CT = 1.0 nF",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillator charge current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 1.7,
          "typ": 2,
          "max": 2.2,
          "conditions": "IRT = 2.0 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Clock amplitude",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3,
          "typ": 3.5,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Clock width",
          "symbol": "",
          "kind": "timing",
          "unit": "µs",
          "min": 0.3,
          "typ": 0.5,
          "max": 1,
          "conditions": "TJ = +25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Sync threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 1.2,
          "typ": 2,
          "max": 2.8,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Sync input current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1,
          "max": 2.5,
          "conditions": "Sync Voltage = +3.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input offset voltage",
          "symbol": "VIO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 2,
          "max": 10,
          "conditions": "VCM = +5.1 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input bias current",
          "symbol": "IIB",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": 10,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input offset current",
          "symbol": "IIO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC open loop gain",
          "symbol": "AVOL",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 75,
          "max": null,
          "conditions": "RL ≥ 10 MΩ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": 0.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.8,
          "typ": 5.6,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Common mode rejection ratio",
          "symbol": "CMRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 60,
          "typ": 75,
          "max": null,
          "conditions": "+1.5 V ≤ VCM ≤ +5.2 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power supply rejection ratio",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": 50,
          "typ": 60,
          "max": null,
          "conditions": "+8.0 V ≤ VCC ≤ +35 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum duty cycle",
          "symbol": "DCmin",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum duty cycle",
          "symbol": "DCmax",
          "kind": "electrical",
          "unit": "%",
          "min": 45,
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