CD5026ITS

{
  "schema_version": 1,
  "type": "component",
  "slug": "cd5026its",
  "title": "CD5026ITS",
  "brief": "Shenzhen CYT Semicon Tech DC-DC Converters, TSSOP-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",
    "cd5026its",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CD5026ITS",
    "manufacturer": "Shenzhen CYT Semicon Tech",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Power Management",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ef586f5dc21b7777d014f80aa341dbed.pdf",
    "parts": {
      "symbol": "cd5026its.kicad_sym",
      "footprint": "cd5026its.kicad_mod",
      "model_3d": "cd5026its-hero.glb",
      "model_3d_plain": "cd5026its-etched.glb",
      "model_3d_step": "cd5026its-etched.step",
      "model_3d_step_plain": "cd5026its.step",
      "lbr": "cd5026its.lbr"
    },
    "distributor_links": {
      "lcsc": "C7502974"
    },
    "distributor_check": {
      "checked_at": "2026-11-04T23:15:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Voltage input pin with an operating input range of 13V to 100V; supplies outside this range need an external regulator."
      },
      {
        "number": "2",
        "name": "UVLO",
        "type": "input",
        "description": "Undervoltage lockout pin set by an external divider; the VCC and REF regulators are enabled at 0.4V and the SS pin is released at 1.25V."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Current-sense pin for current-mode control and limiting; output pulses terminate and enter cycle-by-cycle current limit when CS exceeds 0.5V."
      },
      {
        "number": "4",
        "name": "RES",
        "type": "passive",
        "description": "Restart timer pin; when the RES capacitor reaches 2.5V the soft-start capacitor is fully discharged and then released with a 1µA pull-up."
      },
      {
        "number": "5",
        "name": "TIME",
        "type": "input",
        "description": "Gate-driver overlap or dead-time control pin; RSET between TIME and AGND sets in-phase overlap, and RSET between TIME and REF sets anti-phase dead time."
      },
      {
        "number": "6",
        "name": "REF",
        "type": "power_out",
        "description": "5V reference voltage output with a maximum output current of 10 mA, requiring a 0.1µF decoupling capacitor to ground."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_out",
        "description": "High-voltage start-up regulator output with a regulation range of 7.3V to 7.9V, which an auxiliary winding can raise above the setpoint to switch the start-up regulator off."
      },
      {
        "number": "8",
        "name": "OUT_A",
        "type": "output",
        "description": "Main switch PWM gate driver output capable of 3A peak sink current."
      },
      {
        "number": "9",
        "name": "OUT_B",
        "type": "output",
        "description": "Active-clamp switch gate driver output capable of 0.5A peak source and sink current."
      },
      {
        "number": "10",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground, connected to signal ground at a single point."
      },
      {
        "number": "11",
        "name": "AGND",
        "type": "power_in",
        "description": "Signal ground, connected to power ground at a single point."
      },
      {
        "number": "12",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start pin; an external capacitor and the internal 50µA current source set the soft-start ramp, and the SS current drops to 1µA after restart."
      },
      {
        "number": "13",
        "name": "COMP",
        "type": "input",
        "description": "PWM control pin fed through the optocoupler into an internal NPN current mirror; PWM duty cycle is maximum when input current is zero."
      },
      {
        "number": "14",
        "name": "RT",
        "type": "passive",
        "description": "Oscillator frequency control pin, normally biased at 2V; the total external resistance between RT and AGND sets the internal oscillator frequency."
      },
      {
        "number": "15",
        "name": "SYNC",
        "type": "bidirectional",
        "description": "Oscillator synchronization input/output that lets the internal oscillator lock to an external clock or to other CD5026 devices."
      },
      {
        "number": "16",
        "name": "DCL",
        "type": "input",
        "description": "Maximum duty-cycle control pin; a resistor divider from RT to AGND sets the maximum OUT_A duty cycle."
      }
    ],
    "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 page 3 pin diagram is an image and not readable in the text. The pin numbers and names come from"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0181,
        "at": "2026-11-04T23:15:00"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/ef586f5dc21b7777d014f80aa341dbed.pdf",
        "pages": 14,
        "sha256": "2740d483b74f75a9",
        "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",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
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          1.1
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-11-04",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "zmin_mm": 0,
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        "sha256": "9279c87b207279a41755e81dbdd10e2f4cc8736623d636762200c628c7b40c1f",
        "checked": "2026-11-04",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shenzhen CYT Semicon Tech",
      "Package": "TSSOP-16",
      "Category": "Power Management",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "2740d483b74f75a93befe8991a466b3f9a423341a14bce858959fded5240916a",
      "rows": [
        {
          "name": "VIN to GND voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 105,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VCC to GND voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 16,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "CS to GND voltage",
          "symbol": "CS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 1,
          "conditions": "",
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        },
        {
          "name": "COMP input current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": 0,
          "typ": null,
          "max": 10,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "ALL other pin to GND voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Input voltage (recommended)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 13,
          "typ": null,
          "max": 100,
          "conditions": "",
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        },
        {
          "name": "VCC voltage (recommended)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 8,
          "typ": null,
          "max": 15,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VCC regulated output voltage",
          "symbol": "VCCReg",
          "kind": "electrical",
          "unit": "V",
          "min": 7.3,
          "typ": 7.6,
          "max": 7.9,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VCC load capability",
          "symbol": "IVCC-limit",
          "kind": "electrical",
          "unit": "mA",
          "min": 20,
          "typ": 25,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Startup regulator leakage current",
          "symbol": "IVIN",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 165,
          "max": 500,
          "conditions": "UVLO=0.6V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Shutdown current (UVLO off)",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 350,
          "max": 450,
          "conditions": "UVLO=0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VCC undervoltage hysteresis",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": 1.5,
          "max": 2,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VCC supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 4.2,
          "conditions": "UVLO=1.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage",
          "symbol": "VRef",
          "kind": "electrical",
          "unit": "V",
          "min": 4.85,
          "typ": 5,
          "max": 5.15,
          "conditions": "IREF=0mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reference adjustment range",
          "symbol": "DRef",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 25,
          "max": 50,
          "conditions": "IREF=0mA~10mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Reference current range",
          "symbol": "IRef",
          "kind": "electrical",
          "unit": "mA",
          "min": 10,
          "typ": 20,
          "max": null,
          "conditions": "UVLO=1.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "UVLO undervoltage shutdown",
          "symbol": "Vstd",
          "kind": "electrical",
          "unit": "V",
          "min": 0.3,
          "typ": 0.4,
          "max": 0.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "UVLO reference voltage",
          "symbol": "VUVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 1.21,
          "typ": 1.25,
          "max": 1.29,
          "conditions": "DCL=6.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "UVLO hysteresis current",
          "symbol": "IUVLO",
          "kind": "electrical",
          "unit": "μA",
          "min": 16,
          "typ": 20,
          "max": 24,
          "conditions": "UVLO=1.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Cycle-by-cycle current limit threshold",
          "symbol": "VCS",
          "kind": "electrical",
          "unit": "V",
          "min": 0.45,
          "typ": 0.5,
          "max": 0.55,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Leading edge blanking time",
          "symbol": "tLEB",
          "kind": "electrical",
          "unit": "ns",
          "min": 70,
          "typ": 100,
          "max": 130,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "CS pull-down resistance",
          "symbol": "RSCS",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 30,
          "max": 65,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Restart threshold voltage",
          "symbol": "VOCR",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": 2.55,
          "max": 2.7,
          "conditions": "UVLO=1.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Overcurrent protection charge current",
          "symbol": "IOSC",
          "kind": "electrical",
          "unit": "μA",
          "min": 7.5,
          "typ": 10,
          "max": 12.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Overcurrent protection discharge current",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": 7.5,
          "typ": 10,
          "max": 12.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Soft-start charge current",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "μA",
          "min": 38,
          "typ": 50,
          "max": 58,
          "conditions": "UVLO=1.5V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Soft-start sink current",
          "symbol": "",
          "kind": "electrical",
          "unit": "",
          "min": 38,
          "typ": 50,
          "max": 58,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Soft-start current source after restart",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": 0.6,
          "typ": 1,
          "max": 1.3,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Pulse frequency 1",
          "symbol": "FOSC1",
          "kind": "electrical",
          "unit": "kHz",
          "min": 180,
          "typ": 200,
          "max": 220,
          "conditions": "RT=30kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Pulse frequency 2",
          "symbol": "FOSC2",
          "kind": "electrical",
          "unit": "kHz",
          "min": 520,
          "typ": 590,
          "max": 660,
          "conditions": "RT=10kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum output duty cycle",
          "symbol": "Duty(min)",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0,
          "conditions": "ICOMP=1mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Slope compensation amplitude",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": 75,
          "typ": 90,
          "max": 115,
          "conditions": "PWM比较器到CS的增量",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "OUT-A output high saturation",
          "symbol": "VAouth",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.05,
          "max": 0.1,
          "conditions": "MOS管驱动，IOUT=-10mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "OUT-A output low saturation",
          "symbol": "VAoutl",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.06,
          "max": 0.9,
          "conditions": "MOS管驱动，IOUT=10mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "OUT-B output high saturation",
          "symbol": "VBouth",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.1,
          "max": 0.2,
          "conditions": "IOUT=-10mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "OUT-B output low saturation",
          "symbol": "VBoutl",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.1,
          "max": 0.2,
          "conditions": "IOUT=10mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Overlap time",
          "symbol": "",
          "kind": "timing",
          "unit": "ns",
          "min": 70,
          "typ": 100,
          "max": 130,
          "conditions": "RSET=34.8kΩ连接至GND，重叠50％至50％",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dead time",
          "symbol": "",
          "kind": "timing",
          "unit": "ns",
          "min": 70,
          "typ": 100,
          "max": 130,
          "conditions": "RSET=30kΩ连接至REF，重叠50％至50％",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Over-temperature protection point",
          "symbol": "TSD",
          "kind": "electrical",
          "unit": "℃",
          "min": 150,
          "typ": 165,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "UVLO hysteresis",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.1,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Overcurrent to output delay",
          "symbol": "tLIM_DLY",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "CS从0到0.6 V步进，至OUT端输出的90％，CGATE=0nF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output delay to OUT-A low",
          "symbol": "tOUT_DLY",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "COMP 为 2V，当 CS 由 0 升至 0.4V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum output duty cycle 1",
          "symbol": "Duty(max1)",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 80,
          "max": null,
          "conditions": "UVLO=1.3V，COMP=open，VDCL=2.5V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum output duty cycle 2",
          "symbol": "Duty(max2)",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "UVLO=1.3V，COMP=open，VDCL=VRT*0.875",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum output duty cycle 3",
          "symbol": "Duty(max3)",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "UVLO=2.92V，COMP=open，VDCL=2.5V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "SS pin to PWM bias voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.4,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "COMP input impedance",
          "symbol": "",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 1700,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "OUT-A rise time",
          "symbol": "tra",
          "kind": "timing",
          "unit": "ns",
          "min": null,
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