OB2001WKCPA

{
  "schema_version": 1,
  "type": "component",
  "slug": "ob2001wkcpa",
  "title": "OB2001WKCPA",
  "brief": "OB On Bright Elec AC-DC Controllers and Regulators, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "pmic",
    "ob2001wkcpa"
  ],
  "component": {
    "mpn": "OB2001WKCPA",
    "manufacturer": "OB On Bright Elec",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "AC-DC Controllers and Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/16106ecff90847aab8f0639c38c54c1e.pdf",
    "parts": {
      "symbol": "ob2001wkcpa.kicad_sym",
      "footprint": "ob2001wkcpa.kicad_mod",
      "model_3d": "ob2001wkcpa.glb",
      "model_3d_step": "ob2001wkcpa.step",
      "lbr": "ob2001wkcpa.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VS",
        "type": "input",
        "description": "Connected to the source of the internal N-channel SR MOSFET; serves as the local ground/source reference for Vds sensing. Should be shorted to GND under the package before connecting to the output capacitor negative terminal. Absolute max: -0.6V to 7V."
      },
      {
        "number": "2",
        "name": "VS",
        "type": "input",
        "description": "Second VS pin, connected to the source of the internal N-channel SR MOSFET. Doubled up for current handling and heat dissipation. Absolute max: -0.6V to 7V."
      },
      {
        "number": "3",
        "name": "VD",
        "type": "input",
        "description": "Drain-voltage sense input for the N-channel SR MOSFET. Detects the negative body-diode drop (~-350 mV threshold to turn on, -5 mV threshold to turn off) to time SR gate switching. A 10 ohm 0805 series resistor between VD and Drain is recommended for ESD. Absolute max: -2.5V to 50V."
      },
      {
        "number": "4",
        "name": "Drain",
        "type": "power_out",
        "description": "Drain of the internal SR MOSFET. Connects to the secondary-side winding of the flyback transformer. BVdss = 40 V, Rds(on) typ 15 mOhm. Absolute max: -0.6V to BVdss (self-clamped at -0.6V)."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference for the controller logic and analog blocks. Return for VDD bypass and RT resistor."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_in",
        "description": "Controller power supply. Recommended operating range 4V to 5.5V. UVLO(ON) typ 3.0V, UVLO(OFF) typ 3.1V. Operating current ~1.5 mA at 65 kHz. Requires a bypass capacitor placed close to the pin with its negative node returned directly to GND. Absolute max -0.6V to 7V."
      },
      {
        "number": "7",
        "name": "Vin",
        "type": "input",
        "description": "System output voltage detection input for overshoot control. Trips a 1st overshoot clamp at ~5.65V (SR freq <7.5 kHz) and a 2nd clamp at ~6.15V, opening a ~70 mA discharge path from Vin to GND. Absolute max -0.6V to 7V."
      },
      {
        "number": "8",
        "name": "RT",
        "type": "output",
        "description": "Minimum on-time programming pin. Connect a resistor from RT to GND to set the SR MOSFET minimum on time (Tonmin = 8 * RT * 1e-11; e.g. RT = 25 kOhm gives ~1.9 us). Internal reference voltage Vrt = 1.0V typ. Absolute max -0.6V to 7V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/16106ecff90847aab8f0639c38c54c1e.pdf",
        "pages": 10,
        "sha256": "c4c7bad88806f8fa",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "OB On Bright Elec",
      "Package": "SOP-8",
      "Category": "PMIC",
      "Pins": "8"
    }
  },
  "variants": [
    {
      "mpn": "OB2001WKCPA",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "ob2001wkcpa"
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  "discovery_pitch": "OB2001WKCPA (OB On Bright Elec) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ob2001wkcpa.kicad_sym",
    "ob2001wkcpa.kicad_mod",
    "ob2001wkcpa.glb",
    "ob2001wkcpa.step",
    "ob2001wkcpa.lbr",
    "docs/hero.png",
    "docs/ob2001wkcpa-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T03:23:47.768Z"
}