LM2577SX-ADJ

{
  "slug": "lm2577sx-adj",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "lm2577sx-adj",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm2577sx-adj.kicad_sym",
    "lm2577sx-adj.kicad_mod",
    "lm2577sx-adj.glb",
    "lm2577sx-adj.step",
    "lm2577sx-adj.lbr",
    "docs/hero.png",
    "docs/lm2577sx-adj-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm2577sx-adj-hero.glb",
    "lm2577sx-adj-hero.overlay.json",
    "lm2577sx-adj-etched.glb"
  ],
  "component": {
    "mpn": "LM2577SX-ADJ",
    "manufacturer": "Texas Instruments",
    "package": "TO-263-5",
    "pin_count": 6,
    "category": "Power Management ICs",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm2577sx-adj.pdf",
    "parts": {
      "symbol": "lm2577sx-adj.kicad_sym",
      "footprint": "lm2577sx-adj.kicad_mod",
      "model_3d": "lm2577sx-adj-hero.glb",
      "model_3d_plain": "lm2577sx-adj-etched.glb",
      "model_3d_step": "lm2577sx-adj-etched.step",
      "model_3d_step_plain": "lm2577sx-adj.step",
      "lbr": "lm2577sx-adj.lbr"
    },
    "distributor_links": {
      "lcsc": "C17117",
      "digikey": "LM2577SX-ADJTR-ND",
      "mouser": "926-LM2577SX-ADJ"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T18:40:36Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LM2577SX-ADJTR-ND",
        "status": "found",
        "lifecycle": "Not For New Designs"
      },
      "mouser": {
        "pn": "926-LM2577SX-ADJ",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "passive",
        "description": "Error amplifier output (compensation) pin where the RC/CC network connects; CC of at least 0.22 µF is required for soft start."
      },
      {
        "number": "2",
        "name": "FEEDBACK",
        "type": "input",
        "description": "Error amplifier input that senses the output divider and is compared against the 1.230V internal reference (VOUT = 1.23V(1 + R1/R2))."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin, also connected to the package tab."
      },
      {
        "number": "4",
        "name": "SWITCH",
        "type": "output",
        "description": "Collector of the internal NPN output switch, rated 3.0A operating current and 0V to 60V operating switch voltage."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin with operating range 3.5V to 40V (45V absolute maximum), to be bypassed to ground with a 0.1 µF capacitor."
      },
      {
        "number": "6",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet shows the tab as GND (Figure 5) but gives no separate tab pin number. The tab is not l; Pin names and functions for COMP, FEEDBACK and SWITCH are inferred from the pin names and applicatio",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 40,
        "cost_usd": 0.9051,
        "at": "2026-10-26T18:40:18"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lm2577sx-adj.pdf",
        "pages": 40,
        "sha256": "5eafda8ce16a4e6f",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          15.0,
          10.0,
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        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "94c2a3dc1aaad85b6b5193f97d9a7c61b4e28bac25952a1e629557bcf747e246",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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        "role": "eda",
        "up": "Z",
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        "seat": "z = 0",
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "fb9e296f022b602a5810d1a095db5a48e66e2d29e551d4e872aa79e60f6e9476",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}