L7983PUR

{
  "schema_version": 1,
  "type": "component",
  "slug": "l7983pur",
  "title": "L7983PUR",
  "brief": "STMicroelectronics DC-DC Converters, DFN-10(3x3). 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)",
    "l7983pur",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "L7983PUR",
    "manufacturer": "STMicroelectronics",
    "package": "DFN-10(3x3)",
    "pin_count": 11,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590908725001461760",
    "parts": {
      "symbol": "l7983pur.kicad_sym",
      "footprint": "l7983pur.kicad_mod",
      "model_3d": "l7983pur-hero.glb",
      "model_3d_plain": "l7983pur.glb",
      "model_3d_step": "l7983pur-etched.step",
      "model_3d_step_plain": "l7983pur.step",
      "lbr": "l7983pur.lbr"
    },
    "distributor_links": {
      "lcsc": "C3187561",
      "digikey": "497-L7983PURTR-ND",
      "mouser": "511-L7983PUR"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T17:56:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-L7983PURTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-L7983PUR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VOUT/FB",
        "type": "input",
        "description": "Output voltage sensing pin; on the adjustable L7983PUR it operates as FB, sensing the output through an external resistor divider, and its absolute maximum rating is -0.3 V to 5.5 V."
      },
      {
        "number": "2",
        "name": "VBIAS",
        "type": "power_in",
        "description": "Input supply of the integrated LDO, typically connected to the regulated output or an auxiliary rail, with an absolute maximum rating of -0.3 V to VIN + 0.3 V or max. 14 V; connect to GND if not used."
      },
      {
        "number": "3",
        "name": "VCC",
        "type": "power_out",
        "description": "Output of the integrated LDO that supplies the internal analog circuitry, requiring a ceramic capacitor (470 nF typ.) to filter the internal voltage reference, with an absolute maximum of -0.3 V to VIN + 0.3 V or max. 3.6 V."
      },
      {
        "number": "4",
        "name": "FSW",
        "type": "passive",
        "description": "Switching frequency programming pin, where an external resistor is connected to VCC or GND, with an absolute maximum rating of -0.3 V to VCC + 0.3 V."
      },
      {
        "number": "5",
        "name": "LNM/LCM",
        "type": "input",
        "description": "Dynamic selection between Low Consumption Mode (LCM, active low) and Low Noise Mode (LNM, active high), which can also be used as the clock-in pin for synchronization to an external clock."
      },
      {
        "number": "6",
        "name": "RST",
        "type": "output",
        "description": "Active low open-collector output for output monitoring and power-up reset sequencing, driven low impedance when the output is out of regulation and released once the output becomes valid."
      },
      {
        "number": "7",
        "name": "EN/UVLO",
        "type": "input",
        "description": "Active high enable pin, VIN compatible, which can be used with an external resistor divider to adjust the input undervoltage lockout, with an absolute maximum rating of -0.3 V to VIN + 0.3 V."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "DC input voltage, operating from 3.5 V to 60 V with an absolute maximum rating of -0.3 V to 63 V."
      },
      {
        "number": "9",
        "name": "LX",
        "type": "output",
        "description": "Switching node of the regulator, with an absolute maximum rating of -0.3 V to VIN + 0.3 V."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin of the device."
      },
      {
        "number": "11",
        "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: Exposed pad (E.P.) is listed in Table 1 without a numbered pin ('--'); it must be connected to GND. ; Pin 1 is labelled VOUT/FB in the datasheet and functions as VOUT or FB depending on the part number;; The absolute maximum rating values for LNM/LCM and RST are not legible in the extracted Table 2 text",
          "exposed pad 11 added from the footprint"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0374,
        "at": "2026-10-10T17:56:06"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590908725001461760",
        "pages": 43,
        "sha256": "ccf038b126583955",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 11,
        "described": 11,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "centre_offset_mm": 0,
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  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "DFN-10(3x3)",
      "Category": "Power Management (PMIC)",
      "Pins": "11"
    },
    "characteristics": {
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      "source": "datasheet",
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        {
          "name": "VIN turn-on",
          "symbol": "VINH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.6,
          "typ": 2.8,
          "max": 3,
          "conditions": "VIN rising",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "VIN turn-off",
          "symbol": "VINL",
          "kind": "electrical",
          "unit": "V",
          "min": 2.5,
          "typ": 2.7,
          "max": 2.9,
          "conditions": "VIN falling",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Enable ON threshold",
          "symbol": "VENH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.1,
          "typ": 1.2,
          "max": 1.3,
          "conditions": "VEN rising",
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          "source": "datasheet"
        },
        {
          "name": "Enable OFF threshold",
          "symbol": "VENL",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": 1,
          "max": 1.1,
          "conditions": "VEN falling",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Peak current limit",
          "symbol": "IPK",
          "kind": "electrical",
          "unit": "A",
          "min": 0.42,
          "typ": 0.47,
          "max": 0.52,
          "conditions": "Duty cycle < 20%",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Peak current limit, closed loop",
          "symbol": "IPK",
          "kind": "electrical",
          "unit": "A",
          "min": 0.35,
          "typ": 0.39,
          "max": 0.43,
          "conditions": "Duty cycle = 100%, closed loop operation",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Valley current limit",
          "symbol": "IVY",
          "kind": "electrical",
          "unit": "A",
          "min": 0.43,
          "typ": 0.52,
          "max": 0.61,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Selected switching frequency",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "kHz",
          "min": 450,
          "typ": 500,
          "max": 550,
          "conditions": "RFSW = 5.6 kΩ",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Selected switching frequency",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "kHz",
          "min": 900,
          "typ": 1000,
          "max": 1100,
          "conditions": "RFSW = 0 Ω",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Selected switching frequency",
          "symbol": "fSW",
          "kind": "electrical",
          "unit": "kHz",
          "min": 1980,
          "typ": 2200,
          "max": 2420,
          "conditions": "RFSW = 56 kΩ",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Duty cycle",
          "symbol": "D",
          "kind": "electrical",
          "unit": "%",
          "min": 0,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Internal soft-start time",
          "symbol": "tSS",
          "kind": "electrical",
          "unit": "ms",
          "min": 1.3,
          "typ": 2,
          "max": 2.7,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "VCC LDO output voltage",
          "symbol": "VCC",
          "kind": "electrical",
          "unit": "V",
          "min": 2.9,
          "typ": 3.3,
          "max": 3.6,
          "conditions": "VBIAS = GND",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Voltage feedback, L7983PUR",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 0.844,
          "typ": 0.85,
          "max": 0.856,
          "conditions": "TJ = 25 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Voltage feedback, L7983PUR",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 0.84,
          "typ": 0.85,
          "max": 0.86,
          "conditions": "-40 °C ≤ TJ ≤ 125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Overvoltage trip (VOUT/VREF)",
          "symbol": "VOVP",
          "kind": "electrical",
          "unit": "%",
          "min": 115,
          "typ": 120,
          "max": 125,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Synchronization range",
          "symbol": "fCLKIN",
          "kind": "electrical",
          "unit": "kHz",
          "min": 180,
          "typ": null,
          "max": 2400,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "CLKIN allowed high level",
          "symbol": "VCLKINH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "CLKIN allowed low level",
          "symbol": "VCLKINL",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 1.3,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "LNM selection level",
          "symbol": "VLNM",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "LCM selection level",
          "symbol": "VLCM",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 1.3,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "RST release threshold (VOUT/VREF)",
          "symbol": "VRSTTHR",
          "kind": "electrical",
          "unit": "%",
          "min": 90,
          "typ": 92,
          "max": 94,
          "conditions": "TJ = 25 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "RST release threshold (VOUT/VREF)",
          "symbol": "VRSTTHR",
          "kind": "electrical",
          "unit": "%",
          "min": 88,
          "typ": null,
          "max": 96,
          "conditions": "-40 °C ≤ TJ ≤ 125 °C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Power supply voltage (VIN) absolute maximum",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 63,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VCC absolute maximum",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN/UVLO absolute maximum",
          "symbol": "EN/UVLO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "LX absolute maximum",
          "symbol": "LX",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VBIAS absolute maximum",
          "symbol": "VBIAS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VOUT/FB absolute maximum",
          "symbol": "VOUT/FB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-side / low-side RMS switch current",
          "symbol": "IHS, ILS",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range (TJ)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Lead temperature (soldering)",
          "symbol": "TLEAD",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "soldering 10 sec.",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Power supply voltage (VIN) recommended",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.5,
          "typ": null,
          "max": 60,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "VBIAS recommended",
          "symbol": "VBIAS",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 14,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to ambient",
          "symbol": "RthJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "device soldered on a standard demonstration board",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
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    "name": "Ray",
    "email": "[email protected]"
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