UM1770Y-00

{
  "slug": "um1770y-00",
  "version": "0.1.0",
  "type": "component",
  "description": "Union Semiconductor Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "um1770y-00",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "um1770y-00.kicad_sym",
    "um1770y-00.kicad_mod",
    "um1770y-00.glb",
    "um1770y-00.step",
    "um1770y-00.lbr",
    "docs/hero.png",
    "docs/um1770y-00-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "um1770y-00-hero.glb",
    "um1770y-00-hero.overlay.json",
    "um1770y-00-etched.glb"
  ],
  "component": {
    "mpn": "UM1770Y-00",
    "manufacturer": "Union Semiconductor",
    "package": "SOT-89-5",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590233175306625024",
    "parts": {
      "symbol": "um1770y-00.kicad_sym",
      "footprint": "um1770y-00.kicad_mod",
      "model_3d": "um1770y-00-hero.glb",
      "model_3d_plain": "um1770y-00-etched.glb",
      "model_3d_step": "um1770y-00-etched.step",
      "model_3d_step_plain": "um1770y-00.step",
      "lbr": "um1770y-00.lbr"
    },
    "distributor_links": {
      "lcsc": "C3010789"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T09:45:05Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "error"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback input; the output is set by an external resistor divider referenced to the 1.00V (typ) internal reference VFB, with the adjustable -00 option spanning 1.0V to 5.0V, and FB absolute maximum is -0.3 to +7.5V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground and heat sink; solder to a ground plane or large pad to maximize heat dissipation, as the package tab is electrically connected to GND."
      },
      {
        "number": "3",
        "name": "SHDN",
        "type": "input",
        "description": "Shutdown control input that must not be left floating and must be tied to VIN if unused, with VIH minimum 2.0V and VIL maximum 0.4V for 2.5V ≤ VIN ≤ 6.0V and an absolute maximum of -0.3 to +7.5V."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input for the regulator and load, specified from 2.5V to 6.0V with an absolute maximum of -0.3 to +7.5V, and locally bypassed to ground if far from other bulk capacitance."
      },
      {
        "number": "5",
        "name": "VOUT",
        "type": "power_out",
        "description": "Voltage regulated output that supplies the load with up to 500mA and requires a minimum 1µF output capacitor for stability."
      }
    ],
    "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: Pin mapping for the UM1770Y-00 (adjustable output, SOT89-5) was taken from the Pin Description table; The datasheet contradicts itself on SHDN polarity: the Pin Description (page 3) says High=Activate L; No pin is marked NC for the adjustable variant on SOT89-5 (the table shows '-' for that column), so "
        ],
        "pages_sent": 14,
        "cost_usd": 0.0552,
        "at": "2026-10-19T09:43:16"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590233175306625024",
        "pages": 14,
        "sha256": "d70c75382042de61",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "um1770y-00.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.2,
          4.5,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5bf9133f79d12f58c4da043d3892ba5cec700de6f3255a5358e7ec3200be4733",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "um1770y-00-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.2,
          4.5,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7239a190f4f3debde8fc2cf46a11f76f435a63746c046c04eb2dc13c967a1a43",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}