CD5035IHTS

{
  "schema_version": 1,
  "type": "component",
  "slug": "cd5035ihts",
  "title": "CD5035IHTS",
  "brief": "Shenzhen CYT Semicon Tech DC-DC Converters, HTSSOP-20. 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)",
    "cd5035ihts",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CD5035IHTS",
    "manufacturer": "Shenzhen CYT Semicon Tech",
    "package": "HTSSOP-20",
    "pin_count": 21,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590917178906521600",
    "parts": {
      "symbol": "cd5035ihts.kicad_sym",
      "footprint": "cd5035ihts.kicad_mod",
      "model_3d": "cd5035ihts-hero.glb",
      "model_3d_plain": "cd5035ihts-etched.glb",
      "model_3d_step": "cd5035ihts-etched.step",
      "model_3d_step_plain": "cd5035ihts.step",
      "lbr": "cd5035ihts.lbr"
    },
    "distributor_links": {
      "lcsc": "C7502980"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T08:35:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "error"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RAMP",
        "type": "input",
        "description": "Ramp modulation pin, where an external RC network on VIN sets the ramp slope, and an internal FET discharges it at the end of each cycle."
      },
      {
        "number": "2",
        "name": "UVLO",
        "type": "input",
        "description": "Input undervoltage lockout pin, where an external divider sets the shutdown and standby levels; VCC and REF regulators enable at 0.4V, SS is released at the 1.25V threshold, and hysteresis is a 23µA current sink."
      },
      {
        "number": "3",
        "name": "OVP",
        "type": "input",
        "description": "Input overvoltage protection pin, where an external divider sets the shutdown level against a 1.25V threshold, with 23µA hysteresis current supplied by an internal source."
      },
      {
        "number": "4",
        "name": "COMP",
        "type": "input",
        "description": "Pulse-width adjust input, where optocoupler current feeds an internal NPN current mirror; duty cycle is maximum at zero input current and falls to zero at 1mA."
      },
      {
        "number": "5",
        "name": "RT",
        "type": "input",
        "description": "Oscillator frequency control and sync clock input, typically biased at 2V; an external resistor from RT to AGND sets the free-running frequency, and external sync can run above that frequency."
      },
      {
        "number": "6",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground pin, connected directly to the power supply ground."
      },
      {
        "number": "7",
        "name": "CS",
        "type": "input",
        "description": "Current sense input; the output pulse is terminated cycle by cycle when CS exceeds 0.25V, and CS is held low for 50ns after the leading-edge blanking time."
      },
      {
        "number": "8",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start input, where an internal 55µA source charges the external capacitor to set the soft-start rate, reduced to 1.2µA during current-limit restart sequences."
      },
      {
        "number": "9",
        "name": "DLY",
        "type": "passive",
        "description": "Timing programming pin, where an external resistor to ground sets the non-overlap time between HO to SR1 and LO to SR2."
      },
      {
        "number": "10",
        "name": "RES",
        "type": "passive",
        "description": "Restart timing pin, which receives 22µA into its capacitor on any cycle exceeding cycle-by-cycle current limit; at 2.5V the soft-start capacitor is fully discharged and then released with a 1.2µA pull-up."
      },
      {
        "number": "11",
        "name": "HB",
        "type": "power_in",
        "description": "Bootstrap pin for the HO driver, requiring an external diode from VCC and an external capacitor from HS to supply the high-side gate driver."
      },
      {
        "number": "12",
        "name": "HS",
        "type": "passive",
        "description": "Switch node, the common connection of the transformer and the two power switches, providing the return path for the HO gate driver."
      },
      {
        "number": "13",
        "name": "HO",
        "type": "output",
        "description": "High-side PWM gate drive output, rated to sink 2A peak current."
      },
      {
        "number": "14",
        "name": "LO",
        "type": "output",
        "description": "Low-side PWM gate drive output, rated to sink 2A peak current."
      },
      {
        "number": "15",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground pin, connected directly to the analog ground."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "High-voltage start-up regulator pin; the start regulator turns off when an auxiliary winding raises this pin above the setpoint, and the recommended VCC range is 8V to 15V."
      },
      {
        "number": "17",
        "name": "SR2",
        "type": "output",
        "description": "Synchronous rectifier drive output 2, controlling the sync FET gate with 0.5A peak current capability."
      },
      {
        "number": "18",
        "name": "SR1",
        "type": "output",
        "description": "Synchronous rectifier drive output 1, controlling the sync FET gate with 0.5A peak current capability."
      },
      {
        "number": "19",
        "name": "REF",
        "type": "power_out",
        "description": "Reference voltage output with a maximum output current of 20mA, decoupled locally with a 0.1pF capacitor as printed in the datasheet."
      },
      {
        "number": "20",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input pin with an operating input range of 13V to 105V; supplies outside this range can be applied directly to VCC through an external regulator."
      },
      {
        "number": "21",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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: REF decoupling capacitor is printed as '0.1pF', which is probably a typo (likely 0.1µF). Reported as; The datasheet does not state KiCad electrical types for any pin. Types were assigned from the functi; DLY is labeled an 'output' pin in the datasheet, but its function is a resistor-programmed timing no",
          "exposed pad 21 added from the footprint"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0565,
        "at": "2026-10-19T08:32:35"
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        "pages": 13,
        "sha256": "c542b47ea5017dae",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.41,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "99af96f1da5c85ddc070f2922af0f1da04923f49457f10632d79895dd1142e27",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "sha256": "c1f8d0d09273758793e6458bad48438575e15ff8dcf33d70b7121b7a8a292bb9",
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      }
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shenzhen CYT Semicon Tech",
      "Package": "HTSSOP-20",
      "Category": "Power Management (PMIC)",
      "Pins": "21"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "c542b47ea5017dae300383b67e874211ce3c133323cec70ee361965af80db682",
      "rows": [
        {
          "name": "输入电压 (input voltage, VIN pin)",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 13,
          "typ": null,
          "max": 105,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VCC 电压",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 8,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "工作温度 (operating temperature)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
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        },
        {
          "name": "VIN to GND",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 105,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VCC to GND",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 16,
          "conditions": "",
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        },
        {
          "name": "RT to GND",
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          "max": 5.5,
          "conditions": "",
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        },
        {
          "name": "ALL other PIN to GND",
          "symbol": "",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VCC电压",
          "symbol": "VVCC",
          "kind": "electrical",
          "unit": "V",
          "min": 7.3,
          "typ": 7.6,
          "max": 7.9,
          "conditions": "IVCC=10mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VCC带载能力",
          "symbol": "IVCC-limit",
          "kind": "electrical",
          "unit": "mA",
          "min": 20,
          "typ": 25,
          "max": null,
          "conditions": "VVCC = 7 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "VCC欠压阈值",
          "symbol": "VVCCUV",
          "kind": "electrical",
          "unit": "V",
          "min": 5.5,
          "typ": 6.2,
          "max": 6.9,
          "conditions": "VCC – PGND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "REF电压",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 4.85,
          "typ": 5,
          "max": 5.15,
          "conditions": "IREF = 0 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "REF电压调节",
          "symbol": "VREF-REG",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 25,
          "max": 50,
          "conditions": "IREF = 0 mA ~ 10 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "REF电流限制",
          "symbol": "IREF-LIMIT",
          "kind": "electrical",
          "unit": "mA",
          "min": 15,
          "typ": 20,
          "max": null,
          "conditions": "REF = 4.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "UVLO参考电压",
          "symbol": "VUVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 1.212,
          "typ": 1.25,
          "max": 1.288,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "UVLO关断时迟滞电流",
          "symbol": "IUVLO",
          "kind": "electrical",
          "unit": "µA",
          "min": 19,
          "typ": 23,
          "max": 27,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "软启动充电电流",
          "symbol": "ISS",
          "kind": "electrical",
          "unit": "µA",
          "min": 40,
          "typ": 55,
          "max": 70,
          "conditions": "VSS = 0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "打嗝模式重启电流",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": 0.6,
          "typ": 1.2,
          "max": 1.8,
          "conditions": "VSS = 0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "软停止吸收电流",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": 40,
          "typ": 55,
          "max": 70,
          "conditions": "VSS = 2.5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "逐周期过流比较阈值",
          "symbol": "VCS",
          "kind": "electrical",
          "unit": "V",
          "min": 0.228,
          "typ": 0.25,
          "max": 0.272,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "脉冲频率1",
          "symbol": "FOSC1",
          "kind": "electrical",
          "unit": "kHz",
          "min": 180,
          "typ": 200,
          "max": 220,
          "conditions": "RRT=15kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "脉冲频率2",
          "symbol": "FOSC2",
          "kind": "electrical",
          "unit": "kHz",
          "min": 430,
          "typ": 500,
          "max": 570,
          "conditions": "RRT=5.49kΩ",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "输入外同步脉冲阈值",
          "symbol": "VSYNC",
          "kind": "electrical",
          "unit": "V",
          "min": 2.5,
          "typ": 3,
          "max": 3.4,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "输出脉冲最小占空比",
          "symbol": "Duty(min)",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 0,
          "conditions": "SS=0V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "SS到RAMP偏移",
          "symbol": "VPWM-OS",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": 1,
          "max": 1.2,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "输出低电平 (HO到LO driver)",
          "symbol": "VL1",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": 0.5,
          "conditions": "IOUT=100mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "死区时间 HO-LO, LO-HO",
          "symbol": "DT",
          "kind": "electrical",
          "unit": "ns",
          "min": 45,
          "typ": 70,
          "max": 100,
          "conditions": "VDLY=VRE, ICOMP=0mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "RAMP比较器临界点",
          "symbol": "VRAMP-th",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": 2.5,
          "max": 2.6,
          "conditions": "COMP电流=0A",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "死区时间 SR1下降到HO上升, SR2下降到LO上升",
          "symbol": "DT1",
          "kind": "electrical",
          "unit": "ns",
          "min": 75,
          "typ": 86,
          "max": 125,
          "conditions": "RDLY= 27.4 kΩ",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "CD5035IHTS (Shenzhen CYT Semicon Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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