OB6561PCPA

{
  "schema_version": 1,
  "type": "component",
  "slug": "ob6561pcpa",
  "title": "OB6561PCPA",
  "brief": "OB On Bright Elec PFC Controllers, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "ob6561pcpa"
  ],
  "component": {
    "mpn": "OB6561PCPA",
    "manufacturer": "OB On Bright Elec",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "PFC Controllers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/fc86d8d9bff418b242a69e1cacc231e1.pdf",
    "parts": {
      "symbol": "ob6561pcpa.kicad_sym",
      "footprint": "ob6561pcpa.kicad_mod",
      "model_3d": "ob6561pcpa-etched.glb",
      "model_3d_plain": "ob6561pcpa.glb",
      "model_3d_step": "ob6561pcpa-etched.step",
      "model_3d_step_plain": "ob6561pcpa.step",
      "lbr": "ob6561pcpa.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "INV",
        "type": "input",
        "description": "Inverting input of the internal error amplifier. Connected to a resistor divider from the boost output to sense system output voltage; reference is 2.5 V typ. Also used for system open-loop protection (threshold ~0.25 V)."
      },
      {
        "number": "2",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output. External loop compensation network (RC) is placed between COMP and INV. Also used for dynamic/static OVP sensing (source current ~40 uA triggers dynamic OVP; static threshold 2.25 V)."
      },
      {
        "number": "3",
        "name": "MULT",
        "type": "input",
        "description": "Multiplier input. Connected via resistor divider to the rectified line voltage (after bridge diodes) to provide a sinusoidal reference to the current loop. Linear operating range 0 to 3.5 V."
      },
      {
        "number": "4",
        "name": "CS",
        "type": "input",
        "description": "Current sense input. Connected to the MOSFET source current-sense resistor; internal 40 kOhm/8 pF RC filter and 1.7 V clamp. Feeds the PWM current-sense comparator for cycle-by-cycle current limiting."
      },
      {
        "number": "5",
        "name": "ZCD",
        "type": "input",
        "description": "Zero-current detection input from the auxiliary/ZCD winding. Rising-edge threshold ~1.9 V triggers the next switching cycle (TM operation). Tying ZCD to GND (Vdis threshold 150-350 mV) disables the device. Absolute I_ZCD limits: 50 mA source / -10 mA sink."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Common return for signal, control, and gate-driver currents."
      },
      {
        "number": "7",
        "name": "GD",
        "type": "output",
        "description": "Gate driver output. Totem-pole driver for external power MOSFET; VoH >= 8 V @ 100 mA, VoL <= 1.5 V @ 100 mA. Rise ~80 ns / fall ~30 ns into 1 nF. High-state clamp Voclamp ~16 V protects the MOSFET gate."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "DC supply voltage. Operating range 9.5 V to 28 V (post-startup 11 V to 28 V); UVLO turn-on ~12 V, turn-off ~9.5 V (hysteresis ~2.5 V). Internal zener clamp ~33 V; absolute max 30 V. Start-up current ~35 uA, operating Icc ~4 mA."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/fc86d8d9bff418b242a69e1cacc231e1.pdf",
        "pages": 13,
        "sha256": "05fddf1ba88a0fb3",
        "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"
    },
    "models_3d": [
      {
        "file": "ob6561pcpa.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ob6561pcpa-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "994e40ab33eb0de5719abfcf75386ce80646f6698e1af1e9bc390c8746c8c053",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "OB On Bright Elec",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    }
  },
  "variants": [
    {
      "mpn": "OB6561PCPA",
      "kind": "packaging"
    },
    {
      "mpn": "OB6561PCPAP",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ob6561pcpa"
  ],
  "discovery_pitch": "OB6561PCPA (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",
    "ob6561pcpa.kicad_sym",
    "ob6561pcpa.kicad_mod",
    "ob6561pcpa.glb",
    "ob6561pcpa.step",
    "ob6561pcpa.lbr",
    "docs/hero.png",
    "docs/ob6561pcpa-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T03:28:52.990Z"
}