main
Ray Set visibility: public c0ecf09 16d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "um1770y-00",
  "title": "UM1770Y-00",
  "brief": "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.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "um1770y-00",
    "factory-2.0.0",
    "extractor-text"
  ],
  "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"
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    "models_3d": [
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        "file": "um1770y-00.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          4.5,
          1.5
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        "zmin_mm": 0,
        "centre_offset_mm": 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",
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        "sha256": "7239a190f4f3debde8fc2cf46a11f76f435a63746c046c04eb2dc13c967a1a43",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Union Semiconductor",
      "Package": "SOT-89-5",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "d70c75382042de61966904afc8004fbbba2b362a99c2d5bb11581bb1785c3737",
      "rows": [
        {
          "name": "Input Voltage Range",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input Under Voltage Lockout",
          "symbol": "VUVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 2.4,
          "conditions": "VIN Falling",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating Quiescent Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 92,
          "max": 140,
          "conditions": "VIN=4.2V, IOUT=0mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating Quiescent Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 250,
          "max": 300,
          "conditions": "VIN=4.2V, IOUT=500mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Leakage Current",
          "symbol": "ISHDN",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output Current",
          "symbol": "IOUT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "1mA≤IOUT≤500mA, TA=-25°C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "ΔVDO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 220,
          "max": 320,
          "conditions": "IOUT=500mA, 2.5V≤VOUT",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output Current Limit",
          "symbol": "ILIMT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 700,
          "max": null,
          "conditions": "VIN≥2.5V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input Low Voltage (SHDN)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "2.5V≤VIN≤6.0V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input High Voltage (SHDN)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "2.5V≤VIN≤6.0V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "SHDN Input Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "SHDN=VIN or GND",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal-Shutdown Temperature",
          "symbol": "TSHDN",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 160,
          "max": null,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal-Shutdown Hysteresis",
          "symbol": "ΔTSHDN",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 25,
          "max": null,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.09,
          "max": null,
          "conditions": "VOUT+1V≤VIN≤6.0V (2.5V≤VIN), IOUT=10mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.2,
          "max": null,
          "conditions": "VIN=VOUT+1V (2.5V≤VIN), 1mA≤IOUT≤500mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Startup Time",
          "symbol": "t",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "RL=68Ω, COUT=1μF",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Feedback Reference Voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Noise (Adjustable, VOUT=1.0V)",
          "symbol": "",
          "kind": "electrical",
          "unit": "μVRMS",
          "min": null,
          "typ": 60,
          "max": null,
          "conditions": "10Hz to 100kHz, CIN=1.0μF, IOUT=100mA, Adjustable Output, VOUT=1.0V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Noise (Adjustable, VOUT=3.3V)",
          "symbol": "",
          "kind": "electrical",
          "unit": "μVRMS",
          "min": null,
          "typ": 194,
          "max": null,
          "conditions": "10Hz to 100kHz, CIN=1.0μF, IOUT=100mA, Adjustable Output, VOUT=3.3V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Noise (Adjustable, VOUT=5.0V)",
          "symbol": "",
          "kind": "electrical",
          "unit": "μVRMS",
          "min": null,
          "typ": 305,
          "max": null,
          "conditions": "10Hz to 100kHz, CIN=1.0μF, IOUT=100mA, Adjustable Output, VOUT=5.0V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Ripple Rejection",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 65,
          "max": null,
          "conditions": "VIN=VOUT+1V, IOUT=10mA, f=100Hz",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Ripple Rejection",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 60,
          "max": null,
          "conditions": "VIN=VOUT+1V, IOUT=10mA, f=1kHz",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Ripple Rejection",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 45,
          "max": null,
          "conditions": "VIN=VOUT+1V, IOUT=10mA, f=10kHz",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage on VIN Pin",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Voltage on SHDN Pin",
          "symbol": "VSHDN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Voltage on VOUT Pin",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Voltage on FB Pin",
          "symbol": "VFB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature for Soldering",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "10 Seconds",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation (SOT89-5)",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "@ 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Package Thermal Resistance (SOT89-5)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 66,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "info"
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  "discovery_triggers": [
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  "discovery_pitch": "UM1770Y-00 (Union Semiconductor) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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