RY3740CT5

{
  "schema_version": 1,
  "type": "component",
  "slug": "ry3740ct5",
  "title": "RY3740CT5",
  "brief": "RYCHIP DC-DC Converters, SOT-23-5. 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)",
    "ry3740ct5",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "RY3740CT5",
    "manufacturer": "RYCHIP",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588944309127696384",
    "parts": {
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      "lbr": "ry3740ct5.lbr"
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    "distributor_links": {
      "lcsc": "C2888101"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T07:02:21Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "output",
        "description": "Power switch output: the drain of the internal MOSFET switch, to which the power inductor and output rectifier connect; SW can swing between GND and 35V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Feedback reference voltage pin: a resistor in series between WLED and ground acts as the current sense, and the sensed feedback voltage (0.25V for the CT5 variant) sets the LED current."
      },
      {
        "number": "4",
        "name": "CTRL",
        "type": "input",
        "description": "Multi-function pin for boost enable control and PWM dimming; it should not be left floating, and the PWM magnitude must be higher than the minimum CTRL enable voltage."
      },
      {
        "number": "5",
        "name": "IN",
        "type": "power_in",
        "description": "Input supply pin, which must be locally bypassed; the input range is 2.5V to 5.5V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
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        "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": [],
        "pages_sent": 16,
        "cost_usd": 0.0623,
        "at": "2026-10-19T07:00:18"
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      "datasheet": {
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        "pages": 16,
        "sha256": "aefb3c656d6750d8",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "seat": "z = 0",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
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  "metadata": {
    "specs": {
      "Manufacturer": "RYCHIP",
      "Package": "SOT-23-5",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
    },
    "appearance": {
      "contacts": {
        "quote": "that connects to GND. The inductor should be placed as close as possible to the SW pin and output capacitor. 2. Minimize the copper area of the switch node. The SW terminals should be directly connect",
        "page": 12,
        "doc": "ds.pdf",
        "material": "copper"
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          "max": 125,
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        {
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        {
          "name": "Storage temperature",
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          "unit": "°C",
          "min": -65,
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        {
          "name": "Lead temperature (soldering, 10 sec)",
          "symbol": "",
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          "name": "Input voltage range",
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        {
          "name": "Supply Current (Quiescent)",
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          "conditions": "VFB =110%",
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          "name": "Supply Current (Shutdown)",
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          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": 1,
          "conditions": "VCTRL =0 or CTRL = GND",
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        },
        {
          "name": "Feedback Voltage tolerance (1±2.5%)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -2.5,
          "typ": null,
          "max": 2.5,
          "conditions": "",
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        },
        {
          "name": "SW On Resistance",
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          "kind": "electrical",
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        },
        {
          "name": "UVLO Wake up VIN Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.3,
          "typ": null,
          "max": 2.5,
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        {
          "name": "UVLO Shutdown VIN Voltage",
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          "name": "Feedback Voltage",
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        {
          "name": "Internal SW Current Limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1.6,
          "max": null,
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        },
        {
          "name": "OVP Protection Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 35,
          "max": null,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "Switching Frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 1.2,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum Duty Cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 85,
          "max": null,
          "conditions": "VFB=90%",
          "source_page": 5,
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        {
          "name": "Minimum On-Time",
          "symbol": "",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 80,
          "max": null,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "EN Rising Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.1,
          "max": null,
          "conditions": "",
          "source_page": 5,
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        {
          "name": "EN Falling Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.6,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "UVLO Hysteresis VIN voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 400,
          "max": null,
          "conditions": "",
          "source_page": 5,
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        {
          "name": "Soft Start",
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          "kind": "electrical",
          "unit": "µS",
          "min": null,
          "typ": 600,
          "max": null,
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        {
          "name": "Thermal Shutdown",
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          "unit": "℃",
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          "name": "Thermal Hysteresis",
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          "kind": "electrical",
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          "typ": 30,
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        {
          "name": "Junction-to-ambient thermal resistance (RθJA)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 180,
          "max": null,
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          "name": "Junction-to-case (top) thermal resistance",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "°C/W",
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          "name": "Junction-to-top characterization parameter",
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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