LD5535E1GL

{
  "schema_version": 1,
  "type": "component",
  "slug": "ld5535e1gl",
  "title": "LD5535E1GL",
  "brief": "Leadtrend Tech AC-DC Controllers And Regulators, SOT-26-6. 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)",
    "ld5535e1gl",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "LD5535E1GL",
    "manufacturer": "Leadtrend Tech",
    "package": "SOT-26-6",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590230620640350208",
    "parts": {
      "symbol": "ld5535e1gl.kicad_sym",
      "footprint": "ld5535e1gl.kicad_mod",
      "model_3d": "ld5535e1gl-hero.glb",
      "model_3d_plain": "ld5535e1gl-etched.glb",
      "model_3d_step": "ld5535e1gl-etched.step",
      "model_3d_step_plain": "ld5535e1gl.step",
      "lbr": "ld5535e1gl.lbr"
    },
    "distributor_links": {
      "lcsc": "C2982788"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T10:51:25Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the controller."
      },
      {
        "number": "2",
        "name": "COMP",
        "type": "input",
        "description": "Voltage feedback pin (same as the COMP pin in UC384X) that connects to a photo-coupler to close the control loop and achieve regulation."
      },
      {
        "number": "3",
        "name": "OTP",
        "type": "input",
        "description": "Pulling this pin below 0.95V latches the controller off until AC power is cycled; an NTC to ground gives over-temperature protection, and floating it or using a 100k resistor disables the latch protection."
      },
      {
        "number": "4",
        "name": "CS",
        "type": "input",
        "description": "Current sense pin that senses the MOSFET current for peak-current and pulse-by-pulse limit; absolute maximum rating is -0.3V to 6V."
      },
      {
        "number": "5",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage pin; recommended operating range is 8.5V to 26.5V with an absolute maximum of 30V."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "Gate drive output that drives the external power MOSFET; absolute maximum range is -0.3V to VCC+0.3V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin-to-function mapping and package are taken from the SOT-26 pin table on page 2; the datasheet lis; The datasheet does not explicitly label pin electrical types; the types for COMP, OTP, and CS are as"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0505,
        "at": "2026-10-18T10:48:32"
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        "pages": 15,
        "sha256": "6f4a0f6133abf60e",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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    "models_3d": [
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        "file": "ld5535e1gl.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "ld5535e1gl-etched.step",
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        "origin": "footprint origin = pad-pattern centre",
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        "checked": "2026-10-18",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Leadtrend Tech",
      "Package": "SOT-26-6",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
    },
    "characteristics": {
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      "rows": [
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          "name": "Operating Junction Temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
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        },
        {
          "name": "Supply VCC Voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
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          "conditions": "Printed unit glyph is missing in extracted text; micro prefix not confirmed",
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        },
        {
          "name": "Start-up resistor Value (AC Side, Half Wave)",
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          "kind": "recommended_operating",
          "unit": "K / M (as printed)",
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          "conditions": "AC side, half wave; printed as 540K and 2.2M",
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        },
        {
          "name": "COMP Pin Capacitor",
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        {
          "name": "CS Pin Capacitor Value",
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          "name": "Supply Voltage VCC",
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          "name": "COMP, CS, OTP pin voltage",
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          "name": "OUT pin voltage",
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          "conditions": "Upper limit printed as VCC+0.3V",
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        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "C",
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          "conditions": "",
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        {
          "name": "Storage Temperature Range",
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        {
          "name": "Lead temperature (Soldering)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "C",
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          "max": 260,
          "conditions": "Soldering, 10 sec",
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        {
          "name": "ESD Voltage Protection, Human Body Model",
          "symbol": "",
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        {
          "name": "ESD Voltage Protection, Machine Model",
          "symbol": "",
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          "conditions": "Machine model",
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        {
          "name": "Power Dissipation (SOT-26)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Ambient Temperature = 85C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "UVLO(OFF)",
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          "kind": "electrical",
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          "min": 6.5,
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          "name": "UVLO(ON)",
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        {
          "name": "VCC OVP Level",
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          "unit": "V",
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        {
          "name": "Maximum Input Voltage (VCS_MIN)",
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          "kind": "electrical",
          "unit": "V",
          "min": 0.59,
          "typ": 0.69,
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          "conditions": "For High Line",
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        {
          "name": "Maximum Input Voltage (VCS_OFF)",
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          "kind": "electrical",
          "unit": "V",
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          "typ": null,
          "max": 0.82,
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        {
          "name": "Output High Level",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 9,
          "typ": null,
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          "conditions": "VCC =15V, Io=20mA",
          "source_page": 5,
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        {
          "name": "Output High Clamp Level",
          "symbol": "VO_CLAMP",
          "kind": "electrical",
          "unit": "V",
          "min": 10.5,
          "typ": 11.5,
          "max": 12.5,
          "conditions": "VCC =18V",
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          "source": "datasheet"
        },
        {
          "name": "CCM Frequency",
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          "unit": "kHz",
          "min": 60,
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        {
          "name": "Frequency Swapping",
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          "kind": "electrical",
          "unit": "%",
          "min": -8,
          "typ": null,
          "max": 8,
          "conditions": "Guaranteed by design",
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          "source": "datasheet"
        },
        {
          "name": "Green Mode Frequency",
          "symbol": "FSW_GREEN",
          "kind": "electrical",
          "unit": "kHz",
          "min": 21,
          "typ": 24,
          "max": 27,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Temp. Stability",
          "symbol": "FSW_TS",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 3,
          "max": 5,
          "conditions": "Guaranteed by design",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Maximum Duty",
          "symbol": "DMAX",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 81,
          "conditions": "Guaranteed by design",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "OTP Pin Source Current",
          "symbol": "IOTP",
          "kind": "electrical",
          "unit": "A",
          "min": 90,
          "typ": 100,
          "max": 110,
          "conditions": "Micro prefix missing in extracted text",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Startup Current",
          "symbol": "ICC_ST",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VCC < UVLO(ON); micro prefix missing in extracted text",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating Current (with 1nF load on OUT Pin)",
          "symbol": "ICC_OP1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.285,
          "max": null,
          "conditions": "VCOMP=0V, OUT=1nF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating Current (with 1nF load on OUT Pin)",
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          "unit": "mA",
          "min": null,
          "typ": 1.9,
          "max": null,
          "conditions": "VCOMP=1.7V, OUT=1nF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Auto current protection",
          "symbol": "ICC_OPA1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.6,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "VCC OVP de-bounce time",
          "symbol": "TVCC_OVP",
          "kind": "electrical",
          "unit": "Cycle",
          "min": null,
          "typ": 8,
          "max": null,
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          "source": "datasheet"
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        {
          "name": "Short Circuit Current",
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          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.11,
          "max": null,
          "conditions": "VCOMP=0V",
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          "source": "datasheet"
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        {
          "name": "Open Loop Voltage",
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          "kind": "electrical",
          "unit": "V",
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          "typ": 3.15,
          "max": null,
          "conditions": "",
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          "name": "Zero Duty Threshold VCOMP",
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          "typ": 0.5,
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        {
          "name": "Zero Duty Hysteresis",
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          "unit": "mV",
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          "typ": 100,
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          "typ": 330,
          "max": null,
          "conditions": "0% to DMAX. (Linearly increase); guaranteed by design",
          "source_page": 5,
          "source": "datasheet"
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          "name": "Input impedance",
          "symbol": "ZCS",
          "kind": "electrical",
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          "min": null,
          "typ": 1,
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          "conditions": "Guaranteed by design; unit printed as M (Ohm symbol not extracted)",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Delay to Output",
          "symbol": "TPD",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "Guaranteed by design",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Low Level",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VCC =15V, Io=20mA; guaranteed by design",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Rising Time",
          "symbol": "Tr",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "VCC =15V CL=1000pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Falling Time",
          "symbol": "Tf",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "VCC =15V CL =1000pF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Voltage Stability",
          "symbol": "FSW_VS",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VCC =9V~24V; guaranteed by design",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Soft Start Time",
          "symbol": "TSS",
          "kind": "electrical",
          "unit": "ms",
          "min": null,
          "typ": 7,
          "max": null,
          "conditions": "VCS_OFF from 0.2V to 0.5V; guaranteed by design",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "OLP Trip Level",
          "symbol": "VOLP",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2.8,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "OLP delay time",
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          "kind": "electrical",
          "unit": "ms",
          "min": null,
          "typ": 88,
          "max": null,
          "conditions": "After soft-start",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "CS OVP Trip Current Level",
          "symbol": "VCSOVP",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.31,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "CS OVP De-bounce Cycle",
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          "kind": "electrical",
          "unit": "Cycle",
          "min": null,
          "typ": 8,
          "max": null,
          "conditions": "Guaranteed by design",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "OTP Turn-On Trip Level",
          "symbol": "VOTP_ON",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.05,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "OTP Turn-Off Trip Level",
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          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.95,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "OTP pin de-bounce time",
          "symbol": "TD_OTP",
          "kind": "electrical",
          "unit": "s",
          "min": null,
          "typ": 550,
          "max": null,
          "conditions": "VCOMP > 2V; micro prefix missing in extracted text",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "OTP Level",
          "symbol": "TUP_OTP",
          "kind": "electrical",
          "unit": "C",
          "min": null,
          "typ": 140,
          "max": null,
          "conditions": "Guaranteed by design",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "OTP Hysteresis",
          "symbol": "TINOTP_HYS",
          "kind": "electrical",
          "unit": "C",
          "min": null,
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