COS3525AP

{
  "schema_version": 1,
  "type": "component",
  "slug": "cos3525ap",
  "title": "COS3525AP",
  "brief": "COSINE AC-DC Controllers and Regulators, SOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "cos3525ap"
  ],
  "component": {
    "mpn": "COS3525AP",
    "manufacturer": "COSINE",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "PMIC",
    "subcategory": "AC-DC Controllers and Regulators",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2303081000_COSINE-COS3525AP_C5367536.pdf",
    "parts": {
      "symbol": "cos3525ap.kicad_sym",
      "footprint": "cos3525ap.kicad_mod",
      "model_3d": "cos3525ap-etched.glb",
      "model_3d_plain": "cos3525ap.glb",
      "model_3d_step": "cos3525ap-etched.step",
      "model_3d_step_plain": "cos3525ap.step",
      "lbr": "cos3525ap.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "INV Input",
        "type": "input",
        "description": "Inverting input to the internal error amplifier. Used for feedback voltage sensing in the control loop."
      },
      {
        "number": "2",
        "name": "NI Input",
        "type": "input",
        "description": "Non-inverting input to the internal error amplifier. Common-mode range includes the 5.1V reference, eliminating external divider resistors."
      },
      {
        "number": "3",
        "name": "SYNC",
        "type": "input",
        "description": "Oscillator sync terminal. Allows multiple units to be slaved or a single unit to be synchronized to an external system clock. Sync threshold ~2V (1.2V min, 2.8V max)."
      },
      {
        "number": "4",
        "name": "OSC Output",
        "type": "output",
        "description": "Oscillator output. Provides a clock signal (typically ~4V amplitude, 0.5µs width) used to synchronize additional slave devices."
      },
      {
        "number": "5",
        "name": "CT",
        "type": "passive",
        "description": "Timing capacitor connection pin for oscillator frequency programming (recommended 0.001-0.01 µF). Should be connected to device ground using minimal trace length."
      },
      {
        "number": "6",
        "name": "RT",
        "type": "passive",
        "description": "Timing resistor connection pin for oscillator frequency programming. Recommended range 2-150 kΩ. Sets oscillator charging current together with CT."
      },
      {
        "number": "7",
        "name": "Discharge",
        "type": "passive",
        "description": "Discharge terminal. A single resistor (0-500 Ω) between CT and Discharge provides adjustable dead-time control between the two outputs."
      },
      {
        "number": "8",
        "name": "Soft Start",
        "type": "passive",
        "description": "Soft-start input pin. Connect an external capacitor to ground; it is charged by an internal 50 µA current source to slowly ramp up the duty cycle at startup."
      },
      {
        "number": "9",
        "name": "Compensation",
        "type": "output",
        "description": "Output of the error amplifier, used for external loop compensation network attachment. Also can be pulled down (sinking ≥100 µA) to disable the outputs."
      },
      {
        "number": "10",
        "name": "Shutdown",
        "type": "input",
        "description": "Shutdown control. Pull high (threshold ~0.8V, 0.6-1.0V) to shut down the PWM outputs. Should not be left floating. Provides instantaneous turn-off via the PWM latch on pulsed shutdown, and soft-start recycle on longer shutdown commands."
      },
      {
        "number": "11",
        "name": "Output A",
        "type": "output",
        "description": "Output A of the on-chip totem-pole drive stage. Capable of sourcing/sinking >200 mA (500 mA absolute max). NOR-logic output on COS3525A (LOW when OFF)."
      },
      {
        "number": "12",
        "name": "Ground",
        "type": "power_in",
        "description": "Ground return pin for both signal and power stages."
      },
      {
        "number": "13",
        "name": "VC",
        "type": "power_in",
        "description": "Collector supply for the output driver stage (4.5V to 40V operating). Should be bypassed with a 0.1 µF low-ESL ceramic capacitor placed with minimal trace length."
      },
      {
        "number": "14",
        "name": "Output B",
        "type": "output",
        "description": "Output B of the on-chip totem-pole drive stage. Capable of sourcing/sinking >200 mA (500 mA absolute max). Alternates with Output A. NOR-logic output on COS3525A."
      },
      {
        "number": "15",
        "name": "+VIN",
        "type": "power_in",
        "description": "Main supply voltage input (8V to 40V operating, 41V absolute max). Powers the internal reference, oscillator and control logic."
      },
      {
        "number": "16",
        "name": "VREF",
        "type": "power_out",
        "description": "5.1V reference output (trimmed to 1%, load capability up to 20 mA). Bypass with a 0.1 µF low-ESL ceramic capacitor with a minimal trace to the ground plane."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2303081000_COSINE-COS3525AP_C5367536.pdf",
        "pages": 10,
        "sha256": "9d9ff0dfc3e82fba",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "cos3525ap.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cos3525ap-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
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        "sha256": "8b3c73a517a40e5a478e1a7d5dd6a4cac1b6f3c08d11e4a83ad2daeebfc267e5",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "COSINE",
      "Package": "SOP-16",
      "Category": "PMIC",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cos3525ap"
  ],
  "discovery_pitch": "COS3525AP (COSINE) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cos3525ap.kicad_sym",
    "cos3525ap.kicad_mod",
    "cos3525ap.glb",
    "cos3525ap.step",
    "cos3525ap-etched.step",
    "cos3525ap.lbr",
    "docs/hero.png",
    "docs/cos3525ap-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "COS3525AP",
      "kind": "packaging"
    },
    {
      "mpn": "COS3527AP",
      "kind": "unknown"
    },
    {
      "mpn": "COS3525AT",
      "kind": "unknown"
    },
    {
      "mpn": "COS3527AT",
      "kind": "unknown"
    },
    {
      "mpn": "COS3525AD",
      "kind": "unknown"
    },
    {
      "mpn": "COS3527AD",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-24T19:27:17.222Z"
}