VIPER319XDTR

{
  "schema_version": 1,
  "type": "component",
  "slug": "viper319xdtr",
  "title": "VIPER319XDTR",
  "brief": "ST DC-DC Converters, SO-16. 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 ics",
    "viper319xdtr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "VIPER319XDTR",
    "manufacturer": "ST",
    "package": "SO-16",
    "pin_count": 16,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.st.com/resource/en/datasheet/viper319xdtr.pdf",
    "parts": {
      "symbol": "viper319xdtr.kicad_sym",
      "footprint": "viper319xdtr.kicad_mod",
      "model_3d": "viper319xdtr-hero.glb",
      "model_3d_plain": "viper319xdtr-etched.glb",
      "model_3d_step": "viper319xdtr-etched.step",
      "model_3d_step_plain": "viper319xdtr.step",
      "lbr": "viper319xdtr.lbr"
    },
    "distributor_links": {
      "lcsc": "C3093935",
      "digikey": "497-VIPER319XDTR-ND",
      "mouser": "511-VIPER319XDTR"
    },
    "distributor_check": {
      "checked_at": "2026-11-07T02:14:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-VIPER319XDTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-VIPER319XDTR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground and source of the internal MOSFET and return of the device bias current; all bias component grounds must tie to a trace to this pin, separate from the pulsed current return."
      },
      {
        "number": "2",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected; can be soldered to GND on the PCB."
      },
      {
        "number": "3",
        "name": "VCC",
        "type": "power_in",
        "description": "Controller supply (4.5 V to 30 V) needing an external storage capacitor to GND, and internally connected to the HV current source that charges it at startup; a 0.1 µF typ. bypass capacitor is recommended."
      },
      {
        "number": "4",
        "name": "N.A.",
        "type": "unconnected",
        "description": "Not available for user; mechanically connected to the controller die pad, and connecting it to GND is highly recommended to improve noise immunity."
      },
      {
        "number": "5",
        "name": "UVP",
        "type": "input",
        "description": "Undervoltage protection input that disables the IC if below 0.4 V typ. for more than 30 ms typ., and is left open if the feature is not used."
      },
      {
        "number": "6",
        "name": "OVP",
        "type": "input",
        "description": "Overvoltage protection input that stops PWM in auto-restart if above 4 V typ. for more than 250 µs typ., and is connected to GND if not used."
      },
      {
        "number": "7",
        "name": "FB",
        "type": "input",
        "description": "Direct feedback input, the inverting input of the internal transconductance E/A referenced to 1.2 V, and the E/A is disabled if FB is tied to GND."
      },
      {
        "number": "8",
        "name": "COMP",
        "type": "bidirectional",
        "description": "Output of the internal E/A where the compensation network to GND is connected, or driven directly by the optocoupler in secondary feedback to set the DRAIN peak current."
      },
      {
        "number": "9",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected; must be left floating to keep a safe clearance distance."
      },
      {
        "number": "10",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected; must be left floating to keep a safe clearance distance."
      },
      {
        "number": "11",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected; must be left floating to keep a safe clearance distance."
      },
      {
        "number": "12",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected; must be left floating to keep a safe clearance distance."
      },
      {
        "number": "13",
        "name": "DRAIN",
        "type": "passive",
        "description": "800 V MOSFET drain, also the source of the HV startup current for the VCC capacitor, and connected to the internal metal pad for heat dissipation."
      },
      {
        "number": "14",
        "name": "DRAIN",
        "type": "passive",
        "description": "800 V MOSFET drain, also the source of the HV startup current for the VCC capacitor, and connected to the internal metal pad for heat dissipation."
      },
      {
        "number": "15",
        "name": "DRAIN",
        "type": "passive",
        "description": "800 V MOSFET drain, also the source of the HV startup current for the VCC capacitor, and connected to the internal metal pad for heat dissipation."
      },
      {
        "number": "16",
        "name": "DRAIN",
        "type": "passive",
        "description": "800 V MOSFET drain, also the source of the HV startup current for the VCC capacitor, and connected to the internal metal pad for heat dissipation."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Package hint was SO-16; the datasheet only offers SO16N (Table 10), which was used. The order code t",
          "2/16 pins cited to the wrong page (name found elsewhere): ['11:N.C.@p3', '14:DRAIN@p3']"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0777,
        "at": "2026-11-07T02:13:51"
      },
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/viper319xdtr.pdf",
        "pages": 40,
        "sha256": "200c56a12395fdf1",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "viper319xdtr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-11-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "viper319xdtr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "abf63e058548fc94cbe1968e872961f787d76ab69a972f97b8935a1d01044b00",
        "checked": "2026-11-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "SO16N",
      "source_page": 33,
      "D": {
        "nom_mm": 9.9,
        "range_mm": null
      },
      "E1": {
        "nom_mm": 3.9,
        "range_mm": null
      },
      "E": {
        "nom_mm": 6,
        "range_mm": null
      },
      "e": {
        "nom_mm": 1.27,
        "range_mm": null
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "viper319xdtr.step",
        "verdict": "PASS",
        "reasons": [
          "body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "ST",
      "Package": "SO-16",
      "Category": "Power Management ICs",
      "Pins": "16"
    },
    "appearance": {
      "contacts": {
        "quote": "the VCC capacitor at startup. The pins are mechanically connected to the internal metal PAD of the MOSFET in order to facilitate heat dissipation. On the PCB, some copper areas under these pins",
        "page": 3,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "200c56a12395fdf19fa8e4bcb769b220cf43618ca2620fbeb9df23e5dc66a1bc"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "200c56a12395fdf19fa8e4bcb769b220cf43618ca2620fbeb9df23e5dc66a1bc",
      "rows": [
        {
          "name": "VCC operating voltage range",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "VCC voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 30.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "FB voltage",
          "symbol": "VFB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PTOT",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "Tamb < 50°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature operating range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to case, SO16N",
          "symbol": "RTH-JC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "dissipated power = 1W; standard single side FR4 board with minimum copper area",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to ambient, SO16N",
          "symbol": "RTH-JA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "dissipated power = 1W; standard single side FR4 board with minimum copper area",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to case, SO16N",
          "symbol": "RTH-JC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "dissipated power = 1W; standard single side FR4 board with 100mm² (0.155² inch) of Cu (35 μm thick)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to ambient, SO16N",
          "symbol": "RTH-JA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 85,
          "conditions": "dissipated power = 1W; standard single side FR4 board with 100mm² (0.155² inch) of Cu (35 μm thick)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Static drain-source ON-resistance",
          "symbol": "RDS(on)",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 3.5,
          "conditions": "IDRAIN = 400 mA, TJ = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Static drain-source ON-resistance",
          "symbol": "RDS(on)",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 7,
          "conditions": "IDRAIN = 400 mA, TJ = 125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Breakdown voltage",
          "symbol": "VBVDSS",
          "kind": "electrical",
          "unit": "V",
          "min": 800,
          "typ": null,
          "max": null,
          "conditions": "IDRAIN = 1 mA, VCOMP = VGND, TJ = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VCC charging current at startup",
          "symbol": "ICH1",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.5,
          "typ": 1,
          "max": 1.5,
          "conditions": "VDRAIN = 100V, VCC ≤ 1V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "VCC charging current",
          "symbol": "ICH2",
          "kind": "electrical",
          "unit": "mA",
          "min": 7.6,
          "typ": 8.8,
          "max": 10,
          "conditions": "VFB > VFB_REF, VDRAIN = 100V, 1V < VCC <VCCon",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Startup resistor",
          "symbol": "RG",
          "kind": "electrical",
          "unit": "MΩ",
          "min": 36,
          "typ": 45,
          "max": 54,
          "conditions": "VFB > VFB_REF, VDRAIN = 400 V, VDRAIN = 600 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "VCC startup threshold",
          "symbol": "VCcon",
          "kind": "electrical",
          "unit": "V",
          "min": 7.5,
          "typ": 8,
          "max": 8.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "HV current source turn-on threshold",
          "symbol": "VCson",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": 4.25,
          "max": 4.5,
          "conditions": "VCC falling",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "UVLO",
          "symbol": "VCcoff",
          "kind": "electrical",
          "unit": "V",
          "min": 3.75,
          "typ": 4,
          "max": 4.25,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Operating supply current, switching",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.25,
          "max": 1.7,
          "conditions": "VDS = 150 V, VCOMP = 1.2 V, FOSC = 30 kHz",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "E/A disable voltage",
          "symbol": "VFB_DIS",
          "kind": "electrical",
          "unit": "mV",
          "min": 150,
          "typ": 180,
          "max": 210,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage",
          "symbol": "VFB_REF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.175,
          "typ": 1.2,
          "max": 1.225,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Pull-up current",
          "symbol": "IFB_PULL",
          "kind": "electrical",
          "unit": "µA",
          "min": 0.9,
          "typ": 1,
          "max": 1.1,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Trans conductance",
          "symbol": "GM",
          "kind": "electrical",
          "unit": "µA/V",
          "min": 400,
          "typ": 550,
          "max": 700,
          "conditions": "VCOMP=1.5 V, VFB >VFBREF",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Max. source current",
          "symbol": "ICOMP1",
          "kind": "electrical",
          "unit": "µA",
          "min": 75,
          "typ": 100,
          "max": 125,
          "conditions": "VCOMP=1.5 V, VFB =0.5 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Max. sink current",
          "symbol": "ICOMP2",
          "kind": "electrical",
          "unit": "µA",
          "min": 75,
          "typ": 100,
          "max": 125,
          "conditions": "VFB=2 V, VCOMP=1.5 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Dynamic resistance",
          "symbol": "RCOMP(DYN)",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 13,
          "typ": 15,
          "max": 17,
          "conditions": "VCOMP=2.7 V, VFB =GND",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Current limitation threshold",
          "symbol": "VCOMPH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.75,
          "typ": 3.1,
          "max": 3.45,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "PFM threshold",
          "symbol": "VCOMPL",
          "kind": "electrical",
          "unit": "V",
          "min": 0.6,
          "typ": 0.8,
          "max": 1,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "ΔVCOMP/ΔIDRAIN, VIPER319*",
          "symbol": "HCOMP",
          "kind": "electrical",
          "unit": "V/A",
          "min": 2.9,
          "typ": 3.2,
          "max": 3.5,
          "conditions": "VIPER319*",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Drain current limitation, VIPER319*",
          "symbol": "IDLIM",
          "kind": "electrical",
          "unit": "mA",
          "min": 940,
          "typ": 990,
          "max": 1040,
          "conditions": "TJ= 25°C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Drain current limitation, VIPER319* over temperature",
          "symbol": "IDLIM",
          "kind": "electrical",
          "unit": "mA",
          "min": 891,
          "typ": 990,
          "max": 1089,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Power coefficient tolerance",
          "symbol": "IDLIM_TYP2 x FOSC_TYP",
          "kind": "tolerance",
          "unit": "%",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "VIPER319X",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Power coefficient, VIPER319X",
          "symbol": "I2f",
          "kind": "electrical",
          "unit": "A2·kHz",
          "min": null,
          "typ": 29.4,
          "max": null,
          "conditions": "IDLIM_TYP2 x FOSC_TYP, VIPER319X",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Drain current limitation at light load, VIPER319*",
          "symbol": "IDlim_PFM",
          "kind": "electrical",
          "unit": "mA",
          "min": 120,
          "typ": 150,
          "max": 180,
          "conditions": "TJ=25°C, VCOMP=VCOMPL",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Overload delay time",
          "symbol": "tOVL",
          "kind": "timing",
          "unit": "ms",
          "min": 45,
          "typ": 50,
          "max": 55,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Max. overload delay time",
          "symbol": "tOVL_max",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "When in pulse skipping",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Soft-start time",
          "symbol": "tSS",
          "kind": "timing",
          "unit": "ms",
          "min": 5,
          "typ": 8,
          "max": 11,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Minimum turn-on time",
          "symbol": "tON_MIN",
          "kind": "timing",
          "unit": "ns",
          "min": 250,
          "typ": 300,
          "max": 350,
          "conditions": "VCC=9 V, VCOMP=1 V, VFB=VFB_REF",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Restart time after fault",
          "symbol": "tRESTART",
          "kind": "timing",
          "unit": "s",
          "min": 0.625,
          "typ": 1,
          "max": 1.375,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "UVP threshold",
          "symbol": "VUVP_th",
          "kind": "electrical",
          "unit": "V",
          "min": 0.38,
          "typ": 0.4,
          "max": 0.42,
          "conditions": "VCC =9 V, VCOMP=1 V, VFB=VFB_REF",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Debounce time before UVP tripping",
          "symbol": "tUVP_DEB",
          "kind": "timing",
          "unit": "ms",
          "min": 18.75,
          "typ": 30,
          "max": 41.25,
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