SE9450-435-HF

{
  "schema_version": 1,
  "type": "component",
  "slug": "se9450-435-hf",
  "title": "SE9450-435-HF",
  "brief": "Seaward Elec Battery Management ICs, DFN-8-EP(2x2). 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 supply chip",
    "se9450-435-hf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SE9450-435-HF",
    "manufacturer": "Seaward Elec",
    "package": "DFN-8-EP(2x2)",
    "pin_count": 9,
    "category": "Power Supply Chip",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f5525e2e42884c2652da68482b69b78c.pdf",
    "parts": {
      "symbol": "se9450-435-hf.kicad_sym",
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      "model_3d_step_plain": "se9450-435-hf.step",
      "lbr": "se9450-435-hf.lbr"
    },
    "distributor_links": {
      "lcsc": "C2974724"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T18:17:53Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "TEMP",
        "type": "input",
        "description": "Battery temperature sense input for an NTC sensor; charging pauses when TEMP is below 45% of Vcc or above 80% of Vcc, and tying TEMP to ground disables the function."
      },
      {
        "number": "2",
        "name": "PROG",
        "type": "passive",
        "description": "Constant-charge-current setting and charge-current monitor pin, programmed by a resistor to GND (RPROG = 1000/IBAT)."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive input supply, rated up to 28V (recommended 4.5V to 25V) with 6.5V input overvoltage protection."
      },
      {
        "number": "5",
        "name": "BAT",
        "type": "power_out",
        "description": "Battery connection terminal."
      },
      {
        "number": "6",
        "name": "STDBY",
        "type": "output",
        "description": "Open-drain charge-complete indicator that is pulled low when charging is complete and is high impedance otherwise."
      },
      {
        "number": "7",
        "name": "CHRG",
        "type": "output",
        "description": "Open-drain charge indicator that is pulled low while charging and is high impedance otherwise."
      },
      {
        "number": "8",
        "name": "CE",
        "type": "input",
        "description": "Chip enable input; high level enables normal operation and low level stops the chip."
      },
      {
        "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",
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        "consensus_model": "claude-opus-5-5",
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The DFN2*2-8 top view shows a dashed exposed-pad area but gives it no number, name or connection. Th; MPN SE9450-435-HF does not exactly match the ordering table, which lists SE9450D-435-HF (DFN2*2-8, 4",
          "exposed pad 9 added from the footprint",
          "vision extraction: provenance cannot be text-verified; needs consensus"
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        "pages_sent": 14,
        "cost_usd": 0.3718,
        "at": "2026-10-21T18:13:56"
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        "pages": 14,
        "sha256": "8a53ce8ea33ee242",
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        "total": 9,
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  "metadata": {
    "specs": {
      "Manufacturer": "Seaward Elec",
      "Package": "DFN-8-EP(2x2)",
      "Category": "Power Supply Chip",
      "Pins": "9"
    },
    "characteristics": {
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          "name": "Trickle charge threshold voltage",
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          "kind": "electrical",
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          "name": "Trickle charge hysteresis voltage",
          "symbol": "VTRHYS",
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          "max": null,
          "conditions": "RPROG=2K",
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          "name": "VCC undervoltage lockout threshold",
          "symbol": "VUV",
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          "name": "VCC undervoltage lockout hysteresis",
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          "name": "VCC-VBAT lockout threshold voltage",
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          "name": "VCC-VBAT lockout threshold voltage",
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          "name": "C/10 termination current threshold",
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          "name": "C/10 termination current threshold",
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          "name": "TEMP pin high-side trip voltage",
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          "max": null,
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          "name": "TEMP pin low-side trip voltage",
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          "name": "Recharge battery threshold voltage",
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          "max": null,
          "conditions": "VFLOAT - VRECHRG",
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          "name": "PROG pin pull-up current",
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          "name": "Input overvoltage protection threshold (rising)",
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          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 6.5,
          "max": null,
          "conditions": "输入过压保护（上升）",
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          "name": "Input overvoltage protection hysteresis",
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          "min": null,
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          "max": null,
          "conditions": "迟滞",
          "source_page": 5,
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