NCP1521BSNT1G

{
  "slug": "ncp1521bsnt1g",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi DC-DC Converters, TSOP-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "ncp1521bsnt1g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ncp1521bsnt1g.kicad_sym",
    "ncp1521bsnt1g.kicad_mod",
    "ncp1521bsnt1g.glb",
    "ncp1521bsnt1g.step",
    "ncp1521bsnt1g.lbr",
    "docs/hero.png",
    "docs/ncp1521bsnt1g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ncp1521bsnt1g-hero.glb",
    "ncp1521bsnt1g-hero.overlay.json",
    "ncp1521bsnt1g-etched.glb"
  ],
  "component": {
    "mpn": "NCP1521BSNT1G",
    "manufacturer": "onsemi",
    "package": "TSOP-5",
    "pin_count": 5,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/ncp1521bsnt1-d.pdf",
    "parts": {
      "symbol": "ncp1521bsnt1g.kicad_sym",
      "footprint": "ncp1521bsnt1g.kicad_mod",
      "model_3d": "ncp1521bsnt1g-hero.glb",
      "model_3d_plain": "ncp1521bsnt1g-etched.glb",
      "model_3d_step": "ncp1521bsnt1g-etched.step",
      "model_3d_step_plain": "ncp1521bsnt1g.step",
      "lbr": "ncp1521bsnt1g.lbr"
    },
    "distributor_links": {
      "lcsc": "C128368",
      "digikey": "2832-NCP1521BSNT1GTR-ND",
      "mouser": "863-NCP1521BSNT1G"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T19:29:11Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2832-NCP1521BSNT1GTR-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "863-NCP1521BSNT1G",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input (2.7 V to 5.5 V) for the PFET power stage, analog and digital blocks; must be decoupled to ground by a 4.7 µF ceramic capacitor."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the NFET power stage and analog section of the IC; must be connected to the system ground."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Active-HIGH enable for the switching regulator (VIH min 1.2 V, VIL max 0.4 V); turned off by logic LOW, do not let this pin float."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Feedback voltage from the output of the power supply (0.6 V threshold) and input to the error amplifier."
      },
      {
        "number": "5",
        "name": "LX",
        "type": "output",
        "description": "Connection from the power MOSFETs to the inductor."
      }
    ],
    "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": [],
        "pages_sent": 14,
        "cost_usd": 0.1268,
        "at": "2026-10-26T19:28:57"
      },
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/ncp1521bsnt1-d.pdf",
        "pages": 14,
        "sha256": "12e57b75084beb7e",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7bb4f709cbcec3383aaa7ba920208a4d73b376d9bb60806b65f21dbdb00a84b7",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "checked": "2026-10-26",
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  }
}