UC3526DWTR

{
  "slug": "uc3526dwtr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Controllers, SOIC-18-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "power supply chip",
    "uc3526dwtr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "uc3526dwtr.step",
    "uc3526dwtr.lbr",
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    "docs/uc3526dwtr-datasheet.pdf",
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  "component": {
    "mpn": "UC3526DWTR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-18-300mil",
    "pin_count": 18,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Controllers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/uc3526",
    "parts": {
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      "lbr": "uc3526dwtr.lbr"
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    "distributor_links": {
      "lcsc": "C2658531",
      "digikey": "296-UC3526DWTR-ND",
      "mouser": "595-UC3526DWTR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T20:57:25Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-UC3526DWTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UC3526DWTR",
        "status": "found"
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    },
    "pins": [
      {
        "number": "1",
        "name": "+Error",
        "type": "input",
        "description": "Non-inverting input of the transconductance error amplifier, with input common-mode range of 0 to +5.2V."
      },
      {
        "number": "2",
        "name": "-Error",
        "type": "input",
        "description": "Inverting input of the error amplifier, used with +Error for the voltage feedback connection to the supply output."
      },
      {
        "number": "3",
        "name": "Comp",
        "type": "output",
        "description": "Error amplifier output (2MΩ output impedance) where loop compensation is connected as shunt reactance to ground, feeding the PWM comparator."
      },
      {
        "number": "4",
        "name": "Css",
        "type": "passive",
        "description": "Soft-start capacitor connection, charged by an internal 100µA current source after RESET goes HIGH and held discharged during undervoltage lockout."
      },
      {
        "number": "5",
        "name": "Reset",
        "type": "bidirectional",
        "description": "Active-LOW TTL/CMOS-compatible digital port that discharges the soft-start capacitor when held LOW and is held LOW by undervoltage lockout."
      },
      {
        "number": "6",
        "name": "-Current Sense",
        "type": "input",
        "description": "Inverting input of the current limit comparator, with a typical 100mV sense voltage threshold."
      },
      {
        "number": "7",
        "name": "+Current Sense",
        "type": "input",
        "description": "Non-inverting input of the current limit comparator, with a typical 100mV sense voltage threshold."
      },
      {
        "number": "8",
        "name": "Shutdown",
        "type": "bidirectional",
        "description": "Active-LOW TTL/CMOS-compatible digital port that immediately inhibits all PWM output pulses when pulled LOW."
      },
      {
        "number": "9",
        "name": "RTIMING",
        "type": "passive",
        "description": "Oscillator timing resistor connection, with recommended RT of 2kΩ to 150kΩ."
      },
      {
        "number": "10",
        "name": "CT",
        "type": "passive",
        "description": "Oscillator timing capacitor connection (recommended 1nF to 20µF) that carries the sawtooth waveform and is tied together across devices for synchronization."
      },
      {
        "number": "11",
        "name": "RD",
        "type": "passive",
        "description": "Deadtime setting resistor connection to ground, where a larger value adds dead time (400ns/Ω at 40kHz) and 0Ω gives minimum dead time."
      },
      {
        "number": "12",
        "name": "Sync",
        "type": "bidirectional",
        "description": "Active-LOW TTL/CMOS-compatible digital port that initiates an oscillator discharge cycle when driven LOW and provides the logic clock for synchronizing multiple devices."
      },
      {
        "number": "13",
        "name": "Output A",
        "type": "output",
        "description": "Totem-pole output driver A that sources and sinks 100mA continuously (200mA peak) at half the oscillator frequency."
      },
      {
        "number": "14",
        "name": "VC",
        "type": "power_in",
        "description": "Collector supply voltage for the output drivers, recommended +4.5V to +35V (absolute maximum +40V)."
      },
      {
        "number": "15",
        "name": "Ground",
        "type": "power_in",
        "description": "Ground connection for the device."
      },
      {
        "number": "16",
        "name": "Output B",
        "type": "output",
        "description": "Totem-pole output driver B that sources and sinks 100mA continuously (200mA peak) at half the oscillator frequency."
      },
      {
        "number": "17",
        "name": "+VIN",
        "type": "power_in",
        "description": "Input supply voltage, recommended +8V to +35V (absolute maximum +40V)."
      },
      {
        "number": "18",
        "name": "VREF",
        "type": "power_out",
        "description": "Temperature-compensated 5.0V reference output providing 0 to 20mA of load current."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The extracted text only listed the PLCC-20/LCC-20 pin table, which uses different numbering. The SOI",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 11,
        "cost_usd": 0.4084,
        "at": "2026-10-08T20:57:08"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/uc3526",
        "pages": 11,
        "sha256": "610c26f9ef74514c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 18,
        "described": 18,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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}