LM7905S

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm7905s",
  "title": "LM7905S",
  "brief": "HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "lm7905s"
  ],
  "component": {
    "mpn": "LM7905S",
    "manufacturer": "HGSEMI",
    "package": "TO-263-3",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2209211201_HGSEMI-LM7905S-TR_C2926297.pdf",
    "parts": {
      "symbol": "lm7905s.kicad_sym",
      "footprint": "lm7905s.kicad_mod",
      "model_3d": "lm7905s-etched.glb",
      "model_3d_plain": "lm7905s.glb",
      "model_3d_step": "lm7905s-etched.step",
      "model_3d_step_plain": "lm7905s.step",
      "lbr": "lm7905s.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / common return for the regulator. Both input and output voltages are referenced to this pin."
      },
      {
        "number": "2",
        "name": "INPUT",
        "type": "power_in",
        "description": "Unregulated negative input supply. For LM7905 operating range is -7.0 V >= VIN >= -20 V (absolute max -35 V). Requires a 2.2 uF input decoupling capacitor to ground."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated -5.0 V output (typ.), -4.82 V to -5.18 V over 5 mA to 1.0 A load. Requires >=1.0 uF output capacitor to ground for stability."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2209211201_HGSEMI-LM7905S-TR_C2926297.pdf",
        "pages": 10,
        "sha256": "7e5f09b8cf107bcf",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -7.65,
        -2.54
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TO-263-2@sha256:13d8593fd80553e5",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "lm7905s.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          15,
          10,
          4.42
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "804a3f76e4182a02567b2429bdc9a585b857158fb8543fccd29c8eb6780e1310",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm7905s-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          15,
          10,
          4.42
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7c6bd0c456964152295d63cfe4257078b5ed98f1c3d329a4d530065e740bae2a",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "TO-263-3",
      "Category": "PMIC",
      "Pins": "3"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm7905s"
  ],
  "discovery_pitch": "LM7905S (HGSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm7905s.kicad_sym",
    "lm7905s.kicad_mod",
    "lm7905s.glb",
    "lm7905s.step",
    "lm7905s-etched.step",
    "lm7905s.lbr",
    "docs/hero.png",
    "docs/lm7905s-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "LM7905SS/TR",
      "kind": "packaging"
    },
    {
      "mpn": "LM7905ST",
      "kind": "packaging"
    },
    {
      "mpn": "LM7905SS2/TR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-28T17:11:06.324Z"
}