SE9019

{
  "schema_version": 1,
  "type": "component",
  "slug": "se9019",
  "title": "SE9019",
  "brief": "Seaward Elec Battery Management, SOP-8-EP. 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)",
    "se9019",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SE9019",
    "manufacturer": "Seaward Elec",
    "package": "SOP-8-EP",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883998080970752",
    "parts": {
      "symbol": "se9019.kicad_sym",
      "footprint": "se9019.kicad_mod",
      "model_3d": "se9019-hero.glb",
      "model_3d_plain": "se9019-etched.glb",
      "model_3d_step": "se9019-etched.step",
      "model_3d_step_plain": "se9019.step",
      "lbr": "se9019.lbr"
    },
    "distributor_links": {
      "lcsc": "C415995"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T16:39:20Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Enable input; pulling it low to ground shuts the chip down, placing CHRG and STDBY in high-impedance and reducing quiescent current to about 10 µA."
      },
      {
        "number": "2",
        "name": "BAT",
        "type": "power_out",
        "description": "Battery positive connection that also serves as the battery voltage feedback input; the float voltage is 4.2 V or 4.35 V (±1%)."
      },
      {
        "number": "3",
        "name": "SEN",
        "type": "input",
        "description": "Charge current setting pin, where the charge current is I = 100 mV / R5 using an external sense resistor between SEN and BAT."
      },
      {
        "number": "4",
        "name": "SW",
        "type": "output",
        "description": "Switching output node of the 1 MHz (typ.) current-mode PWM buck converter."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (analog ground); the bottom exposed heatsink pad is also ground, and the datasheet recommends a direct copper connection between this pin and the heatsink without crossing traces."
      },
      {
        "number": "6",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input with a recommended range of 4.7 V to 5.5 V and an absolute maximum of -0.3 V to 6.5 V; an input capacitor of at least 10 µF must be placed close to this pin."
      },
      {
        "number": "7",
        "name": "CHRG",
        "type": "output",
        "description": "Charge status output that is pulled low during charging and is high-impedance when charging is terminated or in sleep mode, with VOL of 0.2 V to 0.6 V at 5 mA."
      },
      {
        "number": "8",
        "name": "TEMP",
        "type": "input",
        "description": "Battery temperature sense input for a 40 kΩ NTC thermistor to ground, with a hot threshold of 0.35 V and a cold threshold of 2.4 V; it must not float (tie to GND if unused), and below 80 mV it disables temperature sensing."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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: The datasheet says the bottom heatsink/exposed pad is ground, but it gives no pad number in the pin ; BAT is described as both battery positive and voltage feedback input; I typed it as power_out (charg; SW is described only as a switching output; typed as output rather than power_out. Confirm the class",
          "exposed pad 9 added from the footprint"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0477,
        "at": "2026-10-18T16:37:15"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588883998080970752",
        "pages": 11,
        "sha256": "b37504cec1c7e4c2",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "se9019.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2d6f7e774e8143e3320cbd59eb5be9f3b7864614644e3b072006e1eb05fb7fa6",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "se9019-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "8f418a22ce9c7737f557f9c453d79ae4924d1e278330fa1a88460aa4d5553970",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Seaward Elec",
      "Package": "SOP-8-EP",
      "Category": "Power Management (PMIC)",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "b37504cec1c7e4c286cbcf6a8929c35159cff4d6a8d7a42363b44b6043270bc2",
      "rows": [
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": 4.7,
          "typ": 5,
          "max": 5.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Battery float voltage",
          "symbol": "VFLOAT",
          "kind": "electrical",
          "unit": "V",
          "min": 4.158,
          "typ": 4.2,
          "max": 4.242,
          "conditions": "IOUT=0.1A(Rsen=0.2Ω)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Maximum duty cycle",
          "symbol": "DC",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "CHRG pin output low voltage",
          "symbol": "Vchrg",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": 0.6,
          "conditions": "Ichrg=5mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input voltage absolute maximum",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input/output pin voltage absolute maximum",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VIN/GND/SW input-output current absolute maximum",
          "symbol": "IVIN/GND/SW",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction operating temperature absolute maximum",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature absolute maximum",
          "symbol": "TST",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Soldering temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "<10 s",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input supply voltage recommended operating range",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.7,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction operating temperature recommended range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -20,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "se9019"
  ],
  "discovery_pitch": "SE9019 (Seaward Elec) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "se9019.kicad_sym",
    "se9019.kicad_mod",
    "se9019.glb",
    "se9019.step",
    "se9019.lbr",
    "docs/hero.png",
    "docs/se9019-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "se9019-hero.glb",
    "se9019-hero.overlay.json",
    "se9019-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}