main
Ray Set visibility: public 9588ca9 18h ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "viper122lstr",
  "title": "VIPER122LSTR",
  "brief": "STMicroelectronics AC-DC Controllers And Regulators, SOP-10. 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)",
    "viper122lstr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "VIPER122LSTR",
    "manufacturer": "STMicroelectronics",
    "package": "SOP-10",
    "pin_count": 10,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.st.com/resource/en/datasheet/viper122lstr.pdf",
    "parts": {
      "symbol": "viper122lstr.kicad_sym",
      "footprint": "viper122lstr.kicad_mod",
      "model_3d": "viper122lstr-hero.glb",
      "model_3d_plain": "viper122lstr-etched.glb",
      "model_3d_step": "viper122lstr-etched.step",
      "model_3d_step_plain": "viper122lstr.step",
      "lbr": "viper122lstr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2969850",
      "digikey": "497-19551-2-ND",
      "mouser": "511-VIPER122LSTR"
    },
    "distributor_check": {
      "checked_at": "2026-11-06T01:19:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-19551-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-VIPER122LSTR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Connected to the source of the internal power MOSFET and the controller ground reference."
      },
      {
        "number": "2",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage of the control section, which provides the charging current of the external capacitor; operating voltage range is 11.5 V to 23.5 V."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; the pin must be left floating."
      },
      {
        "number": "4",
        "name": "EA-OUT",
        "type": "output",
        "description": "Output of the error amplifier, with a saturation limit of 3 V typical and a maximum absolute voltage of 3.5 V."
      },
      {
        "number": "5",
        "name": "EA-IN",
        "type": "input",
        "description": "Input of the error amplifier, with an absolute maximum pin voltage range of -0.3 V to 4.8 V."
      },
      {
        "number": "6",
        "name": "DRAIN",
        "type": "passive",
        "description": "High voltage drain pin rated 730 V drain-to-source; the startup bias current is drawn from this pin and it should connect to a PCB copper area for heat dissipation."
      },
      {
        "number": "7",
        "name": "DRAIN",
        "type": "passive",
        "description": "High voltage drain pin rated 730 V drain-to-source; the startup bias current is drawn from this pin and it should connect to a PCB copper area for heat dissipation."
      },
      {
        "number": "8",
        "name": "DRAIN",
        "type": "passive",
        "description": "High voltage drain pin rated 730 V drain-to-source; the startup bias current is drawn from this pin and it should connect to a PCB copper area for heat dissipation."
      },
      {
        "number": "9",
        "name": "DRAIN",
        "type": "passive",
        "description": "High voltage drain pin rated 730 V drain-to-source; the startup bias current is drawn from this pin and it should connect to a PCB copper area for heat dissipation."
      },
      {
        "number": "10",
        "name": "DRAIN",
        "type": "passive",
        "description": "High voltage drain pin rated 730 V drain-to-source; the startup bias current is drawn from this pin and it should connect to a PCB copper area for heat dissipation."
      }
    ],
    "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 package hint says SOP-10, but the datasheet order code VIPER122LSTR is listed as SSOP10 (Tape & "
        ],
        "pages_sent": 21,
        "cost_usd": 0.0146,
        "at": "2026-11-06T01:19:20"
      },
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/viper122lstr.pdf",
        "pages": 21,
        "sha256": "9b647f0feefa1735",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 10,
        "described": 10,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "viper122lstr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "73098809c11806e1de9f421373d5cd2493cc724f8a8d968de55c951479a57a20",
        "checked": "2026-11-06",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "viper122lstr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          1.75
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "5b65778d9539b7d3150a53c463a598300d0c345b694462dde9f9dd689fb19dac",
        "checked": "2026-11-06",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SOP-10",
      "Category": "Power Management (PMIC)",
      "Pins": "10"
    },
    "appearance": {
      "contacts": {
        "quote": "switched start-up bias current is drawn from this pin too. Connect to a PCB copper area to facilitate heat",
        "page": 5,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "9b647f0feefa173590810c77dc10a31d94a47689fb04e77e446d589e9ad73f06"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "9b647f0feefa173590810c77dc10a31d94a47689fb04e77e446d589e9ad73f06",
      "rows": [
        {
          "name": "Drain-to-source (ground) voltage",
          "symbol": "VDS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 730,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Pulse drain current",
          "symbol": "ID",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "limited by TJ = 150 °C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input pin voltage",
          "symbol": "VEA-IN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 4.8,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Out pin voltage",
          "symbol": "VEA-OUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 3.5,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "max: Self limited",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input current",
          "symbol": "ICC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PTOT",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "TA < 50 °C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature range",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to case (1)",
          "symbol": "RTH-JC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Dissipated power = 1 W; standard single side FR4 board with minimum copper area",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction ambient (1)",
          "symbol": "RTH-JA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 155,
          "conditions": "Dissipated power = 1 W; standard single side FR4 board with minimum copper area",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to case (2)",
          "symbol": "RTH-JC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Dissipated power = 1 W; 100 mm2 (0.155 sq in) of Cu (35 μm thick)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction ambient (2)",
          "symbol": "RTH-JA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 95,
          "conditions": "Dissipated power = 1 W; 100 mm2 (0.155 sq in) of Cu (35 μm thick)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Breakdown voltage",
          "symbol": "VBVDSS",
          "kind": "electrical",
          "unit": "V",
          "min": 730,
          "typ": null,
          "max": null,
          "conditions": "ID = 1 mA, EA-OUT = GND",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Drain-source ON state resistance",
          "symbol": "RDS(on)",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 27,
          "conditions": "ID = 0.2 A; TJ = 25 °C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "OFF state DRAIN leakage current",
          "symbol": "IDSS",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 70,
          "conditions": "VDRAIN = 730 V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Drain-source start voltage",
          "symbol": "VSTART",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 45,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Startup charging current",
          "symbol": "ICH1",
          "kind": "electrical",
          "unit": "mA",
          "min": -0.6,
          "typ": null,
          "max": -1.8,
          "conditions": "VDRAIN = 100 V; VCC = 4 V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Charging current during operation",
          "symbol": "ICH2",
          "kind": "electrical",
          "unit": "mA",
          "min": -7,
          "typ": null,
          "max": -14,
          "conditions": "VDRAIN = 100 V; VCC = 9 V falling edge",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Operating voltage range",
          "symbol": "VCC",
          "kind": "electrical",
          "unit": "V",
          "min": 11.5,
          "typ": null,
          "max": 23.5,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "VCC clamp voltage",
          "symbol": "VCLAMP",
          "kind": "electrical",
          "unit": "V",
          "min": 23.5,
          "typ": null,
          "max": null,
          "conditions": "ICC = 15 mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "VCC ON threshold",
          "symbol": "VON",
          "kind": "electrical",
          "unit": "V",
          "min": 12,
          "typ": 13,
          "max": 14,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "VCC low value",
          "symbol": "VCCL",
          "kind": "electrical",
          "unit": "V",
          "min": 9.5,
          "typ": 10.5,
          "max": 11.5,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "UVLO",
          "symbol": "VOFF",
          "kind": "electrical",
          "unit": "V",
          "min": 7,
          "typ": 8,
          "max": 9,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Operating supply current, not switching",
          "symbol": "ICC0",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.7,
          "conditions": "Not switching",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Operating supply current, switching",
          "symbol": "ICC1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1.6,
          "conditions": "Switching",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Operating supply current, with VCC < VOFF",
          "symbol": "ICC2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.35,
          "conditions": "VCC = 6 V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "VCC clamp protection",
          "symbol": "ICC_FAIL",
          "kind": "electrical",
          "unit": "mA",
          "min": 4,
          "typ": null,
          "max": null,
          "conditions": "VCC = VCLAMP; VEA-OUT = 3.3 V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Drain current limit (OCP)",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "A",
          "min": 0.4,
          "typ": 0.45,
          "max": 0.5,
          "conditions": "VEA-OUT = 3.3 V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Minimum turn ON time",
          "symbol": "TON(MIN)",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 450,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "FOSC",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "kHz",
          "min": 54,
          "typ": 60,
          "max": 66,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Modulation depth",
          "symbol": "FD",
          "kind": "electrical",
          "unit": "kHz",
          "min": -4,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Max. duty cycle",
          "symbol": "DMAX",
          "kind": "electrical",
          "unit": "%",
          "min": 70,
          "typ": null,
          "max": 80,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "E/A reference voltage",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 3.2,
          "typ": 3.3,
          "max": 3.4,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Burst mode threshold",
          "symbol": "VEA-BM",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": 1.1,
          "max": 1.2,
          "conditions": "",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "ΔVEA-OUT / ΔID",
          "symbol": "HEA-OUT",
          "kind": "electrical",
          "unit": "V/A",
          "min": 3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown temperature (1)",
          "symbol": "TSD",
          "kind": "electrical",
          "unit": "°C",
          "min": 150,
          "typ": 160,
          "max": null,
          "conditions": "",
          "source_page": 10,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "viper122lstr"
  ],
  "discovery_pitch": "VIPER122LSTR (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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    "viper122lstr-etched.glb"
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  "visibility": {
    "public": true
  }
}