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Ray Set visibility: public 576960f 13d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "lt3573imse-trpbf",
  "title": "LT3573IMSE#TRPBF",
  "brief": "Analog Devices AC-DC Controllers And Regulators, MSOP-16-EP. 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)",
    "lt3573imse#trpbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LT3573IMSE#TRPBF",
    "manufacturer": "Analog Devices",
    "package": "MSOP-16-EP",
    "pin_count": 17,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588949997840158720",
    "parts": {
      "symbol": "lt3573imse-trpbf.kicad_sym",
      "footprint": "lt3573imse-trpbf.kicad_mod",
      "model_3d": "lt3573imse-trpbf-hero.glb",
      "model_3d_plain": "lt3573imse-trpbf-etched.glb",
      "model_3d_step": "lt3573imse-trpbf-etched.step",
      "model_3d_step_plain": "lt3573imse-trpbf.step",
      "lbr": "lt3573imse-trpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C670933",
      "digikey": "LT3573IMSE#TRPBFTR-ND",
      "mouser": "584-LT3573IMSE#TRPBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T01:30:42Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT3573IMSE#TRPBFTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT3573IMSE#TRPBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin for the LT3573 control and power circuitry."
      },
      {
        "number": "2",
        "name": "TEST",
        "type": "input",
        "description": "Test pin used for testing only, which must be connected to ground for the part to operate properly."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin for the LT3573 control and power circuitry."
      },
      {
        "number": "4",
        "name": "SW",
        "type": "output",
        "description": "Collector node of the integrated 1.25A, 60V NPN output switch that carries large currents, so its traces should be kept as short as possible; SW absolute maximum is 60V."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin for start-up circuitry and the reference for the DCM comparator and feedback; operates from 3V to 40V and must be locally bypassed with a capacitor."
      },
      {
        "number": "6",
        "name": "BIAS",
        "type": "power_in",
        "description": "Supplies current to the switch driver and internal circuitry, regulated to 2.9V to 3.1V at 30mA, and must be locally bypassed; it may tie to VIN only if no third winding is used and VIN is 15V or less."
      },
      {
        "number": "7",
        "name": "SHDN/UVLO",
        "type": "input",
        "description": "Shutdown and undervoltage lockout pin, where a resistor divider from VIN sets the minimum operating input voltage; the rising threshold is 1.15V to 1.29V (1.22V typ) with 2.5µA hysteresis current, and the absolute maximum is 40V."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin for the LT3573 control and power circuitry."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin for the LT3573 control and power circuitry."
      },
      {
        "number": "10",
        "name": "TC",
        "type": "passive",
        "description": "Output voltage temperature compensation pin, where a resistor to ground sets a PTAT current ITC = 0.55V/RTC sourced into RREF; the absolute maximum is 5V."
      },
      {
        "number": "11",
        "name": "RREF",
        "type": "passive",
        "description": "External ground-referred reference resistor pin, nominally about 6k though not required to be exact, with an absolute maximum of 5V."
      },
      {
        "number": "12",
        "name": "RFB",
        "type": "input",
        "description": "External feedback resistor input connected to the transformer primary (VSW), carrying about 200µA average during flyback; the absolute maximum is 40V."
      },
      {
        "number": "13",
        "name": "VC",
        "type": "passive",
        "description": "Compensation pin for the internal error amplifier, requiring a series RC to ground and an optional 100pF capacitor in parallel; the absolute maximum is 5V."
      },
      {
        "number": "14",
        "name": "RILIM",
        "type": "passive",
        "description": "Maximum current limit adjust pin, where a resistor to ground sets the switch current limit and a 10k resistor gives full switch current capability (1.25A min, 1.55A typ, 1.85A max); the absolute maximum is 5V."
      },
      {
        "number": "15",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start pin, where a capacitor limits start-up inrush current and output voltage ramp rate, and switching begins when the voltage reaches about 0.7V; the absolute maximum is 5V."
      },
      {
        "number": "16",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin for the LT3573 control and power circuitry."
      },
      {
        "number": "17",
        "name": "EXPOSED PAD",
        "type": "power_in",
        "description": "Exposed pad is ground and must be soldered to the board and connected with many vias to an internal ground plane for electrical contact and thermal performance."
      }
    ],
    "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 MSOP top-view pin-to-label mapping was reconstructed from a scrambled text extraction of the pin; BIAS is typed power_in, but the datasheet describes it as a regulated ~3V internal rail that can be ; The datasheet describes the pin functions but does not give a KiCad type for each pin. SW is typed o",
          "5/17 pins cited to the wrong page (name found elsewhere): ['11:RREF@p5', '13:VC@p5', '14:RILIM@p5', '16:GND@p5']"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0484,
        "at": "2026-10-21T01:27:18"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588949997840158720",
        "pages": 26,
        "sha256": "3f66b761923d7550",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lt3573imse-trpbf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          4.039,
          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "e807f0e0e2c0c408c18dc198f4fc826ff019157c0529c7e78e68c1aab270d826",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lt3573imse-trpbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3999bd6aa696a6299480c32e6608ce3ca6b4bbc146baa6f3c13e48981878e891",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "MSOP-16-EP",
      "Category": "Power Management (PMIC)",
      "Pins": "17"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "3f66b761923d755017aca2ab4d626bfc2dcc169391a4f21de5632eb95c5adff3",
      "rows": [
        {
          "name": "Input Voltage Range",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 3.5,
          "conditions": "SS = 0V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0,
          "max": 1,
          "conditions": "VSHDN/UVLO = 0V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "SHDN/UVLO Pin Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 1.15,
          "typ": 1.22,
          "max": 1.29,
          "conditions": "UVLO Pin Voltage Rising",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "SHDN/UVLO Pin Hysteresis Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": 2,
          "typ": 2.5,
          "max": 3,
          "conditions": "VUVLO = 1V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Switch Current Limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": 1.25,
          "typ": 1.55,
          "max": 1.85,
          "conditions": "RILIM = 10k",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Switch VCESAT",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 150,
          "max": 250,
          "conditions": "ISW = 0.5A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "RREF Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 1.21,
          "typ": 1.23,
          "max": 1.25,
          "conditions": "VIN = 3V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "RREF Voltage (full temperature range)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 1.2,
          "typ": null,
          "max": 1.25,
          "conditions": "l, VIN = 3V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "RREF Voltage Line Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.01,
          "max": 0.03,
          "conditions": "3V < VIN < 40V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "RREF Pin Bias Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 100,
          "max": 600,
          "conditions": "l, Note 3",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "BIAS Pin Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.9,
          "typ": 3,
          "max": 3.1,
          "conditions": "IBIAS = 30mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Soft-Start Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 7,
          "max": null,
          "conditions": "SS = 0.4V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Soft-Start Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.7,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Switching Frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": null,
          "typ": 1000,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Minimum Current Limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "VC = 0V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "IREF Reference Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 190,
          "max": null,
          "conditions": "Measured at RFB pin with RREF = 6.49k",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Error Amplifier Voltage Gain",
          "symbol": "",
          "kind": "electrical",
          "unit": "V/V",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "VIN = 3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error Amplifier Transconductance",
          "symbol": "",
          "kind": "electrical",
          "unit": "µmhos",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "DI = 10µA, VIN = 3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum Switching Frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "VC = 0.35V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "TC Current into RREF",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 27.5,
          "max": null,
          "conditions": "RTC = 20.1k",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VIN, SHDN/UVLO, RFB, BIAS Pin Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "SS, VC, TC, RREF, RILIM Pin Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature Range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "Printed for LT3573E; LT3573I guaranteed -40°C to 125°C per Note 2",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction to Ambient",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction to Case",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
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  "sections": [
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "LT3573IMSE#TRPBF (Analog Devices) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}