al3353s-13

{
  "slug": "al3353s-13",
  "version": "0.1.0",
  "type": "component",
  "description": "Diodes Incorporated LED Drivers, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "led-drv",
    "al3353s-13"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "al3353s-13.kicad_sym",
    "al3353s-13.kicad_mod",
    "al3353s-13.glb",
    "al3353s-13.step",
    "al3353s-13.lbr",
    "docs/hero.png",
    "docs/al3353s-13-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "al3353s-13-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "author": {
    "name": "Ray"
  },
  "component": {
    "mpn": "AL3353S-13",
    "manufacturer": "Diodes Incorporated",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "LED Drivers",
    "parts": {
      "symbol": "al3353s-13.kicad_sym",
      "footprint": "al3353s-13.kicad_mod",
      "model_3d": "al3353s-13-etched.glb",
      "model_3d_plain": "al3353s-13.glb",
      "model_3d_step": "al3353s-13-etched.step",
      "model_3d_step_plain": "al3353s-13.step",
      "lbr": "al3353s-13.lbr"
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input. Operating range 9 V to 40 V (absolute max 43 V). Internally supplies the 5 V LDO and gate driver; UVLO turn-on 8.3 V typ with 800 mV hysteresis. A decoupling capacitor should be placed close to this pin."
      },
      {
        "number": "2",
        "name": "GATE",
        "type": "output",
        "description": "Gate drive output for the external boost power N-MOSFET. Typical output amplitude ~13 V at VIN = 24 V, with ~40 ns rise / ~20 ns fall into 1 nF. Absolute max −0.3 V to 43 V."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground / return for the internal analog, logic, and gate-driver circuits. Tie to the system ground plane; grounds of the OVP divider and compensation network should return here."
      },
      {
        "number": "4",
        "name": "CS",
        "type": "input",
        "description": "Current-sense input from the MOSFET source resistor for peak-current-mode control. Cycle-by-cycle OCP threshold ≈500 mV (typ, at 90% duty); diode/inductor short protection latches if CS exceeds ~1.2 V for 17 consecutive cycles. Absolute max −0.3 V to 7 V. An external slope-compensation resistor RSL can be inserted in this path."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "LED current feedback input to the error amplifier. Regulates the voltage across the external LED-current sense resistor to VFB = 400 mV ±1.5 % (394/400/406 mV). Absolute max −0.3 V to 7 V; ILED[mA] ≈ 400 mV·DUTY / RFB."
      },
      {
        "number": "6",
        "name": "COMP",
        "type": "output",
        "description": "Boost converter loop compensation node - output of the internal gm error amplifier (gm ≈ 100 µA/V, Isource 30 µA / Isink 60 µA). Connect an external RC network to GND close to the pin. Latches GATE off if VCOMP > 3.2 V for 37 ms (FB-short / LED-cathode-short protection). Absolute max −0.3 V to 7 V."
      },
      {
        "number": "7",
        "name": "OVP",
        "type": "input",
        "description": "Overvoltage-protection sense input from an external resistor divider on the boost output. Triggers OVP at ~2.0 V (VOUT_OVP = (R4+R5)/R5 · 2 V). Also monitors VOUT-short (trips when < ~0.25 V normal / 150 mV at startup). Absolute max −0.3 V to 43 V; protection is latched and cleared via VIN or PWM."
      },
      {
        "number": "8",
        "name": "PWM",
        "type": "input",
        "description": "PWM signal input for analog dimming / enable. Internally pulled to GND via ~220 kΩ. Logic high ≥ 2.5 V enables the device; logic low ≤ 1.2 V for > 20 ms puts it in standby (~130 µA). Supported PWM frequency 5 kHz to 50 kHz; absolute max −0.3 V to 7 V (relaxed to −5 V for <100 ns pulses)."
      }
    ],
    "provenance": {
      "rebuilt": "component block rebuilt 2026-10-05 from this page's own README pinout table and .kicad_sym (pins cross-checked), no re-extraction"
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "distributor_links": {
      "digikey": "AL3353S-13DITR-ND",
      "mouser": "621-AL3353S-13"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T18:51:44Z",
      "source": "Component Ocean /api/assign-pns + lcsc_map",
      "digikey": {
        "pn": "AL3353S-13DITR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "621-AL3353S-13",
        "status": "found"
      }
    },
    "models_3d": [
      {
        "file": "al3353s-13.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "al3353s-13-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1ad58ca0d9c0368d994deaebeee880be7f4ec04a15d4434a995013826059d2eb",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}