SY8089AAAC

{
  "schema_version": 1,
  "type": "component",
  "slug": "sy8089aaac",
  "title": "SY8089AAAC",
  "brief": "Silergy Corp DC-DC Converters, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "sy8089aaac"
  ],
  "component": {
    "mpn": "SY8089AAAC",
    "manufacturer": "Silergy Corp",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/400ca014d7a690f5be0127468f87fcc6.pdf",
    "parts": {
      "symbol": "sy8089aaac.kicad_sym",
      "footprint": "sy8089aaac.kicad_mod",
      "model_3d": "sy8089aaac-etched.glb",
      "model_3d_plain": "sy8089aaac.glb",
      "model_3d_step": "sy8089aaac-etched.step",
      "model_3d_step_plain": "sy8089aaac.step",
      "lbr": "sy8089aaac.lbr"
    },
    "distributor_links": {
      "lcsc": "C78988"
    },
    "pins": [
      {
        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Enable control input. Pull high (>1.5V) to turn on the regulator; pull low (<0.4V) to shut down (Ishdn ~0.1µA). Do not float; add a 1MΩ pull-down to GND if the driving source can go high-Z."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return pin. Maximize copper area for best thermal and noise performance; keep CIN loop area to IN/GND minimal."
      },
      {
        "number": "3",
        "name": "LX",
        "type": "power_out",
        "description": "Switching node output; connect to the external inductor (typ. 2.2µH). Internal PFET (110mΩ) sources to VIN and NFET (80mΩ) sinks to GND; peak current limit 3.5A. Minimize PCB copper area on this node to reduce switching noise."
      },
      {
        "number": "4",
        "name": "IN",
        "type": "power_in",
        "description": "Supply input, 2.7V to 5.5V (abs max 6.0V). Decouple to GND with at least a 10µF (typ. 22µF) X5R/X7R ceramic capacitor placed close to the IN and GND pins."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback input. Connect to the mid-point of the R1/R2 output divider to program Vout = 0.6V × (1 + R1/R2). Reference is 0.6V (±2%); IFB ±50nA. Keep FB trace away from the LX net."
      }
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        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
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        "refuses_to_fabricate": true
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    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-5@sha256:455a3f7c3e5eb5b8",
      "mark": "drawn"
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    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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        "up": "Z",
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        "seat": "z = 0",
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        "zmin_mm": 0,
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        "sha256": "d3d485f32d7997b6221cef7375dbd38e7d4ae2cc5ee9617260e4fb6897b78393",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Silergy Corp",
      "Package": "SOT-23-5",
      "Category": "PMIC",
      "Pins": "5"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "be137413d9493bb7",
      "rows": [
        {
          "name": "Input Voltage Range",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 55,
          "conditions": "IOUT=0, VFB=VREF⋅105%",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Current",
          "symbol": "ISHDN",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": 1,
          "conditions": "EN=0",
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        },
        {
          "name": "Feedback Reference Voltage",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 0.588,
          "typ": 0.6,
          "max": 0.612,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "FB Input Current",
          "symbol": "IFB",
          "kind": "electrical",
          "unit": "nA",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "VFB=VIN",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "PFET RON",
          "symbol": "RDS(ON),P",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": null,
          "max": 110,
          "conditions": "",
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        },
        {
          "name": "NFET RON",
          "symbol": "RDS(ON),N",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": null,
          "max": 80,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "PFET Current Limit",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 3.5,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "EN rising threshold",
          "symbol": "VENH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "EN falling threshold",
          "symbol": "VENL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Input UVLO threshold",
          "symbol": "VUVLO",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "UVLO hysteresis",
          "symbol": "VHYS",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Oscillator Frequency",
          "symbol": "FOSC",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "IOUT=500mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Short Circuit Protection Latch Off Threshold",
          "symbol": "VSCP",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.25,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Min ON Time",
          "symbol": "",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": null,
          "max": 75,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Max Duty Cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Soft Start Time",
          "symbol": "TSS",
          "kind": "electrical",
          "unit": "ms",
          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Output Discharge Switch On Resistance",
          "symbol": "RDISCH",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Thermal Shutdown Temperature",
          "symbol": "TSD",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 160,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply Input Voltage (recommended)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature Range (recommended)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
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        {
          "name": "Ambient Temperature Range (recommended)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Supply Input Voltage (absolute maximum)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Enable, FB Voltage (absolute maximum)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "max VIN + 0.6 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "TA = 25°C, SOT23-5",
          "source_page": 2,
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        {
          "name": "Junction Temperature Range (absolute maximum)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (soldering)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10 sec.",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Package Thermal Resistance, junction-to-ambient",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 170,
          "max": null,
          "conditions": "Note 2: 2in x 2in FR-4, 2oz copper, thermal vias",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Package Thermal Resistance, junction-to-case",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 130,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
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  "updated_at": "2026-09-25T09:14:00.904Z"
}