ETA8123S2G

{
  "schema_version": 1,
  "type": "component",
  "slug": "eta8123s2g",
  "title": "ETA8123S2G",
  "brief": "ETA(钰泰) DC-DC Converters, SOT-23-6. 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)",
    "eta8123s2g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ETA8123S2G",
    "manufacturer": "ETA(钰泰)",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604441121304944640",
    "parts": {
      "symbol": "eta8123s2g.kicad_sym",
      "footprint": "eta8123s2g.kicad_mod",
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      "model_3d_plain": "eta8123s2g-etched.glb",
      "model_3d_step": "eta8123s2g-etched.step",
      "model_3d_step_plain": "eta8123s2g.step",
      "lbr": "eta8123s2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C42459402"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T15:51:51Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BST",
        "type": "power_out",
        "description": "Bootstrap pin; connect a 10nF capacitor from this pin to SW."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the regulator."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Feedback input; connect an external resistor divider from the output to FB and GND to set VOUT, with a 0.6V typical FB voltage (0.593V to 0.612V) and R2 between 1kΩ and 20kΩ."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Enable pin; drive high to enable the part, low or floating to disable it, with a rising threshold of 1.0V to 1.4V."
      },
      {
        "number": "5",
        "name": "IN",
        "type": "power_in",
        "description": "Supply voltage input for 4V to 18V operation; bypass with a 10μF ceramic capacitor to GND."
      },
      {
        "number": "6",
        "name": "SW",
        "type": "output",
        "description": "Inductor connection; connect the inductor between SW and the regulator output."
      }
    ],
    "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 type for BST (bootstrap) is not stated in the datasheet; power_out was chosen because it supplie; SW pin type is not stated in the datasheet; output was chosen because it is the switching node drive; Pin numbers and names come from the page 3 PIN DESCRIPTION table and agree with the page 2 pin confi"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0297,
        "at": "2026-10-17T15:49:58"
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        "pages": 9,
        "sha256": "0f7e7616d73b05c0",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-17",
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        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "ETA(钰泰)",
      "Package": "SOT-23-6",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0f7e7616d73b05c00cf24a6dc28036717d264e6695ca1e3feb1f0e0cb540d44a",
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          "symbol": "",
          "kind": "electrical",
          "unit": "V",
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          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "Input Shutdown Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 8,
          "max": 14,
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        },
        {
          "name": "FB Voltage",
          "symbol": "",
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          "min": 0.593,
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        },
        {
          "name": "EN Rising Threshold",
          "symbol": "",
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          "min": 1,
          "typ": 1.2,
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        },
        {
          "name": "EN Falling Threshold",
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          "conditions": "VEN=2V",
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        {
          "name": "Ambient Temperature Range",
          "symbol": "",
          "kind": "recommended_operating",
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        {
          "name": "Junction Temperature Range",
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        {
          "name": "IN, EN Voltage",
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          "min": -0.3,
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        {
          "name": "SW Voltage",
          "symbol": "",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 19,
          "conditions": "Note (1): -5V for <10ns; note (2): 23V for <10ns",
          "source_page": 2,
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        },
        {
          "name": "BST Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
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          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Maximum printed as SW+6V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "FB Voltage (absolute maximum)",
          "symbol": "",
          "kind": "absolute_maximum",
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          "typ": null,
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          "conditions": "",
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        {
          "name": "Junction Temperature (absolute maximum)",
          "symbol": "",
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          "unit": "°C",
          "min": null,
          "typ": null,
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          "conditions": "",
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        {
          "name": "Storage Temperature Range",
          "symbol": "",
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          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Power Dissipation",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "Note (5): PD=(Tjmax-Ta)/θJA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input UVLO Rising",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3.7,
          "max": null,
          "conditions": "Hysteresis=320mV",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Input OVP Rising",
          "symbol": "",
          "kind": "electrical",
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          "max": null,
          "conditions": "Hysteresis=0.9V",
          "source_page": 2,
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        },
        {
          "name": "Input Supply Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 230,
          "max": null,
          "conditions": "VFB=0.65V, no switching",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Switching Frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": null,
          "typ": 600,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Short Circuit Hiccup On Time",
          "symbol": "",
          "kind": "electrical",
          "unit": "mS",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "Short circuit hiccup",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Short Circuit Hiccup Off Time",
          "symbol": "",
          "kind": "electrical",
          "unit": "mS",
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          "typ": 4.5,
          "max": null,
          "conditions": "Short circuit hiccup",
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        {
          "name": "FB Hiccup Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": null,
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        },
        {
          "name": "High Side Switch On Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 95,
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        },
        {
          "name": "Low Side Switch On Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "High Side Current Limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "SW Leakage Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "VIN=VSW=12V, EN=GND",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown",
          "symbol": "",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "Rising, Hysteresis =20° C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-to-Ambient (EVB)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "C/W",
          "min": null,
          "typ": 80,
          "max": null,
          "conditions": "Note (4): 1OZ two-layer ETA EVB, TA=25C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-to-Case (JESD51-3)",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "C/W",
          "min": null,
          "typ": 90,
          "max": null,
          "conditions": "JESD51-3 JEDEC board, note (3)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-to-Case (EVB)",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "C/W",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "Note (4): 1OZ two-layer ETA EVB, TA=25C",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "ETA8123S2G (ETA(钰泰)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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