AL8843SP-13

{
  "schema_version": 1,
  "type": "component",
  "slug": "al8843sp-13",
  "title": "AL8843SP-13",
  "brief": "Diodes Incorporated LED Drivers, SO-8-EP. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "led-drv",
    "al8843sp-13"
  ],
  "component": {
    "mpn": "AL8843SP-13",
    "manufacturer": "Diodes Incorporated",
    "package": "SO-8-EP",
    "pin_count": 9,
    "category": "LED-drv",
    "subcategory": "LED Drivers",
    "datasheet": "https://www.diodes.com/assets/Datasheets/AL8843SP-13.pdf",
    "parts": {
      "symbol": "al8843sp-13.kicad_sym",
      "footprint": "al8843sp-13.kicad_mod",
      "model_3d": "al8843sp-13-etched.glb",
      "model_3d_plain": "al8843sp-13.glb",
      "model_3d_step": "al8843sp-13-etched.step",
      "model_3d_step_plain": "al8843sp-13.step",
      "lbr": "al8843sp-13.lbr"
    },
    "distributor_links": {
      "lcsc": "C507866"
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground of IC. Tie to system ground plane; internally connected to pin 2 and exposed pad."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground of IC. Tie to system ground plane; internally connected to pin 1 and exposed pad."
      },
      {
        "number": "3",
        "name": "SET",
        "type": "input",
        "description": "Set nominal output current pin. Connect resistor R_SET from this pin to VIN to define the nominal average output current. Mean current-sense threshold V_SET typ 100mV (96-104mV) with respect to VIN; I_SET typ 8µA."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection. Leave floating or tie to ground for best noise immunity."
      },
      {
        "number": "5",
        "name": "CTRL",
        "type": "input",
        "description": "Multi-function On/Off and brightness control input. Leave floating for normal operation. Drive below 0.3V to shut down the power switch. Analog dim by applying 0.4V-2.5V DC (10%-100% of I_OUT_NOM); >2.6V gives 100%. Accepts PWM (low <0.3V, high >2.6V, edges <1µs). A capacitor from CTRL to GND increases soft-start time (default t_SS ≈ 0.1ms; adds ~1.5ms/nF)."
      },
      {
        "number": "6",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage, 4.5V to 40V (abs max 42V). Decouple to ground with a 10µF or higher X7R ceramic capacitor placed close to the device. UVLO rising typ 3.9V with 250mV hysteresis."
      },
      {
        "number": "7",
        "name": "SW",
        "type": "output",
        "description": "Switch node - drain of the internal 40V NDMOS high-side switch (R_ON typ 0.2Ω). Connect the inductor and freewheeling Schottky diode here, minimizing track length to reduce EMI. Internally tied to pin 8."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "output",
        "description": "Switch node - drain of the internal 40V NDMOS high-side switch. Connect the inductor and freewheeling Schottky diode here, minimizing track length to reduce EMI. Internally tied to pin 7."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "power_in",
        "description": "Exposed pad / thermal tab. Connects to GND and to the PCB thermal mass for enhanced thermal impedance. Solder to a copper pour tied to ground.",
        "source": "renumbered-to-footprint-pad"
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.diodes.com/assets/Datasheets/AL8843SP-13.pdf",
        "pages": 16,
        "sha256": "b544c47b8437fba0",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.4975,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "Diodes_SO-8EP@sha256:e4747640ff122bb4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "al8843sp-13.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.5,
          4.9,
          1.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "be241b6207302f40c4b7d76f18c3aa00cfdcc9936c5f943565a9113eef245f83",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "al8843sp-13-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.5,
          4.9,
          1.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "eb757c162ceb6a9cac4a515f0a0e704ba783fa38b49a6644287d15636cf53c5c",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Diodes Incorporated",
      "Package": "SO-8-EP",
      "Category": "LED-drv",
      "Pins": "9"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "al8843sp-13"
  ],
  "discovery_pitch": "AL8843SP-13 (Diodes Incorporated) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "al8843sp-13.kicad_sym",
    "al8843sp-13.kicad_mod",
    "al8843sp-13.glb",
    "al8843sp-13.step",
    "al8843sp-13-etched.step",
    "al8843sp-13.lbr",
    "docs/hero.png",
    "docs/al8843sp-13-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "variants": [
    {
      "mpn": "AL8843SP-13",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T16:15:31.107Z"
}