FAN5333ASX

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  "type": "component",
  "slug": "fan5333asx",
  "title": "FAN5333ASX",
  "brief": "onsemi LED Drivers, 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": [
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    "led drivers",
    "fan5333asx",
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  "component": {
    "mpn": "FAN5333ASX",
    "manufacturer": "onsemi",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "LED Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589977327133224961",
    "parts": {
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      "model_3d_step_plain": "fan5333asx.step",
      "lbr": "fan5333asx.lbr"
    },
    "distributor_links": {
      "lcsc": "C890747",
      "digikey": "FAN5333ASXTR-ND",
      "mouser": "512-FAN5333ASX"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T10:00:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "FAN5333ASXTR-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "512-FAN5333ASX",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "passive",
        "description": "Switching node connected to the internal N-channel switch; the datasheet gives an SW to GND absolute maximum range of −0.3 V to 35 V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Analog and power ground; the datasheet recommends a PCB ground plane connected to this pin as an EMI shield."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Feedback pin that connects to the external current-set resistor divider; for the FAN5333A (this MPN) the feedback voltage is 110 mV typical (99 mV to 121 mV), and FB to GND is limited to −0.3 V to VIN + 0.3 V."
      },
      {
        "number": "4",
        "name": "SHDN",
        "type": "input",
        "description": "Shutdown control where logic HIGH enables and logic LOW disables the device, with a device-on threshold of 1.5 V and device-off threshold of 0.5 V; SHDN to GND is limited to −0.3 V to VIN + 0.3 V."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Input voltage pin with a recommended operating range of 1.8 V to 5.5 V and an absolute maximum VIN to GND of 6.0 V."
      }
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        "guard_notes": [
          "extractor flagged: The datasheet does not assign an ERC class to SW; 'passive' was chosen as the KiCad type for the swi; The datasheet lists both FAN5333A (110 mV) and FAN5333B (315 mV) feedback voltages. The description "
        ],
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        "at": "2026-10-20T09:59:57"
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  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOT-23-5",
      "Category": "LED Drivers",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "48c0d98df2bf045fdba39b5fa82d735d3d36db6eb412db78250577ef5a408228",
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          "name": "Feedback Voltage (FAN5333A, 110 mV variant)",
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          "kind": "electrical",
          "unit": "mV",
          "min": 99,
          "typ": 110,
          "max": 121,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Switch Current Limit",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "A",
          "min": 1.1,
          "typ": 1.5,
          "max": null,
          "conditions": "VIN = 3.2 V",
          "source_page": 3,
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        },
        {
          "name": "Switching Frequency",
          "symbol": "fSW",
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          "unit": "MHz",
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        {
          "name": "Maximum Duty Cycle",
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          "unit": "%",
          "min": 87,
          "typ": 93,
          "max": null,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Shutdown Threshold, Device ON",
          "symbol": "VSHDN",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "Device ON",
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        {
          "name": "Shutdown Threshold, Device OFF",
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        {
          "name": "OFF Mode Current",
          "symbol": "IOFF",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
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          "max": 3,
          "conditions": "VSHDN = 0 V",
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        {
          "name": "Shutdown Pin Bias Current",
          "symbol": "ISHDN",
          "kind": "electrical",
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          "typ": 1,
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          "conditions": "VSHDN = 0 V or VSHDN = 5.5 V",
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        {
          "name": "Feedback Pin Bias Current",
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        {
          "name": "Load Current Capability",
          "symbol": "ILOAD",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 65,
          "max": null,
          "conditions": "VOUT ≤ 20 V, VIN = 3.2 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Switch On-resistance",
          "symbol": "RDS(ON)",
          "kind": "electrical",
          "unit": "",
          "min": null,
          "typ": 0.6,
          "max": null,
          "conditions": "VIN = 5 V",
          "source_page": 3,
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        },
        {
          "name": "Switch On-resistance",
          "symbol": "RDS(ON)",
          "kind": "electrical",
          "unit": "",
          "min": null,
          "typ": 0.7,
          "max": null,
          "conditions": "VIN = 3.6 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.6,
          "max": null,
          "conditions": "VSHDN = 3.6 V, No Switching",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Feedback Voltage Line Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.3,
          "max": null,
          "conditions": "2.7 V < VIN < 5.5 V, VOUT ≤ 20 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Switch Leakage Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "No Switching, VIN = 5.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "OVP (over-voltage protection threshold above nominal)",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown Temperature",
          "symbol": "",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "",
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        {
          "name": "Input Voltage",
          "symbol": "VIN",
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          "min": 1.8,
          "typ": null,
          "max": 5.5,
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          "name": "Output Voltage",
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          "max": 30,
          "conditions": "",
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        {
          "name": "Operating Ambient Temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": 25,
          "max": 85,
          "conditions": "",
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        },
        {
          "name": "Output Capacitance (rated at required output)",
          "symbol": "COUT",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 0.47,
          "typ": null,
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          "conditions": "For maximum load current",
          "source_page": 3,
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          "name": "VIN to GND",
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          "conditions": "",
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          "name": "FB, SHDN to GND",
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          "min": -0.3,
          "typ": null,
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          "conditions": "Maximum printed as VIN + 0.3 V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "SW to GND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 35,
          "conditions": "",
          "source_page": 3,
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        {
          "name": "Lead Soldering Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "10 seconds",
          "source_page": 3,
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        },
        {
          "name": "Junction Temperature",
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          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Storage Temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance (junction to ambient)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 210,
          "max": null,
          "conditions": "",
          "source_page": 3,
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        {
          "name": "Electrostatic Discharge Protection, HBM",
          "symbol": "ESD",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "HBM, EIA/JESD22-A114B",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Electrostatic Discharge Protection, CDM",
          "symbol": "ESD",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "CDM, EIA/JESD22-C101-A",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
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