OB3353ACPA

{
  "schema_version": 1,
  "type": "component",
  "slug": "ob3353acpa",
  "title": "OB3353ACPA",
  "brief": "OB On Bright Elec LED Drivers, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "led-drv",
    "ob3353acpa"
  ],
  "component": {
    "mpn": "OB3353ACPA",
    "manufacturer": "OB On Bright Elec",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "LED-drv",
    "subcategory": "LED Drivers",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2109161030_OB-On-Bright-Elec-OB3353ACPA_C2890318.pdf",
    "parts": {
      "symbol": "ob3353acpa.kicad_sym",
      "footprint": "ob3353acpa.kicad_mod",
      "model_3d": "ob3353acpa-etched.glb",
      "model_3d_plain": "ob3353acpa.glb",
      "model_3d_step": "ob3353acpa-etched.step",
      "model_3d_step_plain": "ob3353acpa.step",
      "lbr": "ob3353acpa.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input. Recommended operating range 9V to 30V (abs max 33V). UVLO turn-off threshold ~8.3V with 800mV hysteresis."
      },
      {
        "number": "2",
        "name": "GATE",
        "type": "output",
        "description": "Gate driver output pin for the external boost power MOSFET. Rise time ~40 ns and fall time ~20 ns into a 1 nF load."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference for all internal circuitry and the gate driver return."
      },
      {
        "number": "4",
        "name": "CS",
        "type": "input",
        "description": "Current sense input from the external sense resistor at the MOSFET source. Used for current-mode PWM control; OCP threshold ~380 mV @ 90% duty. Diode/inductor short protection triggers at VTH_CS ~1.2 V."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "LED current feedback input. Voltage across the LED current sense resistor is regulated to the internal 400 mV reference (Vref_ea)."
      },
      {
        "number": "6",
        "name": "COMP",
        "type": "output",
        "description": "Boost converter loop compensation pin. Transconductance error amplifier output (Gm ~100 uA/V); tie an RC network to GND to set loop dynamics. VTH_CMP ~3.2 V flags FB-short-to-GND."
      },
      {
        "number": "7",
        "name": "OVP",
        "type": "input",
        "description": "Over-voltage protection sense input. Trips when VOVP_OV ~2.0 V is reached (typically via a resistor divider from the boost output). OVP UVLO thresholds 250 mV (normal) / 150 mV (startup)."
      },
      {
        "number": "8",
        "name": "PWM",
        "type": "input",
        "description": "PWM signal input for PWM-to-analog dimming control. Logic-high >= 2.5 V, logic-low <= 1.3 V, duty 0-100%, recommended frequency 5-50 kHz."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2109161030_OB-On-Bright-Elec-OB3353ACPA_C2890318.pdf",
        "pages": 12,
        "sha256": "592275a8a3fd0ee1",
        "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": "ob3353acpa.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": "ob3353acpa-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
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          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c1267043fe824a464ed8bb623b4232e84279e8310b20f48443bab2444b4edd88",
        "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": "LED-drv",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ob3353acpa"
  ],
  "discovery_pitch": "OB3353ACPA (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",
    "ob3353acpa.kicad_sym",
    "ob3353acpa.kicad_mod",
    "ob3353acpa.glb",
    "ob3353acpa.step",
    "ob3353acpa-etched.step",
    "ob3353acpa.lbr",
    "docs/hero.png",
    "docs/ob3353acpa-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "OB3353ACPA",
      "kind": "packaging"
    },
    {
      "mpn": "OB3353ACPAAKFP",
      "kind": "packaging"
    },
    {
      "mpn": "OB3353ACPAAKFPA",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T03:27:39.100Z"
}