L4973V5.1

{
  "slug": "l4973v5-1",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics DC-DC Converters, DIP-18. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "l4973v5.1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "path": "docs/hero.png"
  },
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    "README.md",
    "l4973v5-1.kicad_sym",
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    "l4973v5-1.glb",
    "l4973v5-1.step",
    "l4973v5-1.lbr",
    "docs/hero.png",
    "docs/l4973v5-1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "l4973v5-1-hero.glb",
    "l4973v5-1-hero.overlay.json"
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  "component": {
    "mpn": "L4973V5.1",
    "manufacturer": "STMicroelectronics",
    "package": "DIP-18",
    "pin_count": 18,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588924233367343104",
    "parts": {
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      "footprint": "l4973v5-1.kicad_mod",
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      "model_3d_step": "l4973v5-1-etched.step",
      "model_3d_step_plain": "l4973v5-1.step",
      "lbr": "l4973v5-1.lbr"
    },
    "distributor_links": {
      "lcsc": "C1355637",
      "digikey": "497-7249-5-ND",
      "mouser": "511-L4973V5.1"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T16:44:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-7249-5-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "511-L4973V5.1",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OSC",
        "type": "passive",
        "description": "An external resistor from the unregulated input voltage to pin 1 and a capacitor from pin 1 to ground set the switching frequency; line feed forward is obtained automatically."
      },
      {
        "number": "2",
        "name": "OUT",
        "type": "power_out",
        "description": "Step-down regulator output; absolute maximum output DC voltage is -1 V and output peak voltage is -5 V at t = 0.1 µs, f = 200 kHz."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "power_out",
        "description": "Step-down regulator output; absolute maximum output DC voltage is -1 V and output peak voltage is -5 V at t = 0.1 µs, f = 200 kHz."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Unregulated DC input voltage; operating range is 8 V to 55 V and absolute maximum input voltage is 58 V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Unregulated DC input voltage; operating range is 8 V to 55 V and absolute maximum input voltage is 58 V."
      },
      {
        "number": "9",
        "name": "BOOT",
        "type": "passive",
        "description": "A capacitor connected between this pin and the output drives the internal D-MOS; the datasheet gives a bootstrap voltage rating of 70 V and V9-V8 of 14 V."
      },
      {
        "number": "10",
        "name": "INH",
        "type": "input",
        "description": "Active-high logic inhibit that disables the device (sleep mode); high level is 3.0 V min and low level is 0.8 V max, and it must be connected to GND if not used since floating disables the device."
      },
      {
        "number": "11",
        "name": "COMP",
        "type": "passive",
        "description": "Error amplifier output used for frequency compensation; its output swings from 0.65 V (low) to 11.0 V (high)."
      },
      {
        "number": "12",
        "name": "VFB",
        "type": "input",
        "description": "Step-down feedback input; connecting the output directly to this pin gives 5.1 V for the L4973V5.1, and an external resistive divider is required for higher output voltages."
      },
      {
        "number": "13",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground."
      },
      {
        "number": "15",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground."
      },
      {
        "number": "16",
        "name": "V5.1",
        "type": "power_out",
        "description": "Externally available precise 5.1 V reference, specified at 5.025 V to 5.175 V (typ 5.1 V) for Iref = 0 to 20 mA."
      },
      {
        "number": "17",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start pin; the datasheet specifies a soft-start charge current of 30 to 60 µA and discharge current of 15 to 30 µA."
      },
      {
        "number": "18",
        "name": "SYNC",
        "type": "bidirectional",
        "description": "Input/output synchronization pin; high input level is 3.5 V min and low input level is 0.9 V max for VCC = 8 V to 55 V."
      }
    ],
    "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 pin description table text extracted for DIP-18 does not include a row for the SS pin. Pin 17 = ; Table 1 groups these as one GND entry for DIP-18; they are listed individually here, each as signal ; Table 2 absolute maximum ratings are in a garbled two-column layout (DIP-18 and SO-20 values mixed);"
        ],
        "pages_sent": 28,
        "cost_usd": 0.0796,
        "at": "2026-10-11T16:44:17"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588924233367343104",
        "pages": 28,
        "sha256": "8bad7b96ec4d871a",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 18,
        "described": 18,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "extents_mm": [
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
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        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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}