VIPER37LDTR

{
  "slug": "viper37ldtr",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics AC-DC Controllers And Regulators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "viper37ldtr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "viper37ldtr.kicad_sym",
    "viper37ldtr.kicad_mod",
    "viper37ldtr.glb",
    "viper37ldtr.step",
    "viper37ldtr.lbr",
    "docs/hero.png",
    "docs/viper37ldtr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "viper37ldtr-hero.glb",
    "viper37ldtr-hero.overlay.json",
    "viper37ldtr-etched.glb"
  ],
  "component": {
    "mpn": "VIPER37LDTR",
    "manufacturer": "STMicroelectronics",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.st.com/resource/en/datasheet/viper37ldtr.pdf",
    "parts": {
      "symbol": "viper37ldtr.kicad_sym",
      "footprint": "viper37ldtr.kicad_mod",
      "model_3d": "viper37ldtr-hero.glb",
      "model_3d_plain": "viper37ldtr-etched.glb",
      "model_3d_step": "viper37ldtr-etched.step",
      "model_3d_step_plain": "viper37ldtr.step",
      "lbr": "viper37ldtr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2970148",
      "digikey": "497-19427-2-ND",
      "mouser": "511-VIPER37LDTR"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T23:19:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-19427-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-VIPER37LDTR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "This pin is the device ground and the source of the power section."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "This pin is the device ground and the source of the power section."
      },
      {
        "number": "3",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "4",
        "name": "N.A.",
        "type": "unconnected",
        "description": "Not available for user; it is mechanically connected to the controller die pad and is highly recommended to be connected to GND (pins 1-2) to improve noise immunity."
      },
      {
        "number": "5",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply voltage of the control section, which also provides the charging current of the external capacitor during start-up time."
      },
      {
        "number": "6",
        "name": "CONT",
        "type": "bidirectional",
        "description": "Control pin for current limit set point adjustment (reduced by an external resistor to ground) and for output voltage monitoring, where a voltage exceeding VOVP shuts the IC down after strobed, digitally filtered sampling."
      },
      {
        "number": "7",
        "name": "FB",
        "type": "input",
        "description": "Control input for duty cycle control; a voltage below VFBbm activates burst-mode operation and a level close to VFBlin approaches the cycle-by-cycle overcurrent set point."
      },
      {
        "number": "8",
        "name": "BR",
        "type": "input",
        "description": "Brownout protection input with hysteresis; a voltage below VBRth shuts down (not latches) the device, and it can be connected to ground when not used."
      },
      {
        "number": "9",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "10",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "11",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "12",
        "name": "N.C.",
        "type": "unconnected",
        "description": "Not connected."
      },
      {
        "number": "13",
        "name": "DRAIN",
        "type": "passive",
        "description": "High voltage drain pin that also draws the built-in high voltage switched start-up bias current."
      },
      {
        "number": "14",
        "name": "DRAIN",
        "type": "passive",
        "description": "High voltage drain pin that also draws the built-in high voltage switched start-up bias current."
      },
      {
        "number": "15",
        "name": "DRAIN",
        "type": "passive",
        "description": "High voltage drain pin that also draws the built-in high voltage switched start-up bias current."
      },
      {
        "number": "16",
        "name": "DRAIN",
        "type": "passive",
        "description": "High voltage drain pin that also draws the built-in high voltage switched start-up bias current."
      }
    ],
    "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: VIPER37LDTR is the tape-and-reel order code for the SO16 narrow package (Table 1), so the SO16N pino",
          "1/16 pins cited to the wrong page (name found elsewhere): ['11:N.C.@p5']"
        ],
        "pages_sent": 18,
        "cost_usd": 0.0204,
        "at": "2026-11-05T23:19:19"
      },
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/viper37ldtr.pdf",
        "pages": 35,
        "sha256": "18de52b1b5992ba6",
        "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": "viper37ldtr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "viper37ldtr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "aeea0867dff59ea9b8a9ae4bd1d04f87f35d4f436c3f611d6829df35683b41be",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}