HT7540S

{
  "slug": "ht7540s",
  "version": "0.1.0",
  "type": "component",
  "description": "UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "ht7540s",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ht7540s.kicad_sym",
    "ht7540s.kicad_mod",
    "ht7540s.glb",
    "ht7540s.step",
    "ht7540s.lbr",
    "docs/hero.png",
    "docs/ht7540s-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ht7540s-hero.glb",
    "ht7540s-hero.overlay.json",
    "ht7540s-etched.glb"
  ],
  "component": {
    "mpn": "HT7540S",
    "manufacturer": "UMW",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755873480518975488",
    "parts": {
      "symbol": "ht7540s.kicad_sym",
      "footprint": "ht7540s.kicad_mod",
      "model_3d": "ht7540s-hero.glb",
      "model_3d_plain": "ht7540s-etched.glb",
      "model_3d_step": "ht7540s-etched.step",
      "model_3d_step_plain": "ht7540s.step",
      "lbr": "ht7540s.lbr"
    },
    "distributor_links": {
      "lcsc": "C18057292"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T01:41:26Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the HT75xx LDO regulator."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Regulator input pin; the maximum input voltage is 30 V and the 7540 is specified at VIN = 6 V (5 V to 30 V line range)."
      },
      {
        "number": "3",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated output pin; the 7540 output is 4.0 V typical (3.88 V to 4.12 V at VIN = 6 V, IOUT = 10 mA), with at least 60 mA output 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: The ordering table on page 14 is garbled in the text extraction. The mapping of HT75xxS to SOT-23 is; Pin numbers and names come from the pinning table on page 1, where the symbols (G, V, V, N) and desc; The 7540 electrical table on page 5 is a column-stacked extraction, so the min/typ/max values for qu"
        ],
        "pages_sent": 15,
        "cost_usd": 0.046,
        "at": "2026-10-18T01:36:39"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755873480518975488",
        "pages": 15,
        "sha256": "c8d27849b87576cd",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ht7540s.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ht7540s-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "249ef42fed5586a1842f075e8beedd0ab0a566aaf4985f103a356ef9986299bb",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}