AL1791AFE-13

{
  "slug": "al1791afe-13",
  "version": "0.1.1",
  "type": "component",
  "description": "Diodes Incorporated LED Drivers, UDFN-14-EP(4x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "display modules - led drivers - display drivers",
    "al1791afe-13",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "al1791afe-13.kicad_sym",
    "al1791afe-13.kicad_mod",
    "al1791afe-13.glb",
    "al1791afe-13.step",
    "al1791afe-13.lbr",
    "docs/hero.png",
    "docs/al1791afe-13-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "al1791afe-13-hero.glb",
    "al1791afe-13-hero.overlay.json"
  ],
  "component": {
    "mpn": "AL1791AFE-13",
    "manufacturer": "Diodes Incorporated",
    "package": "UDFN-14-EP(4x3)",
    "pin_count": 15,
    "category": "Display Modules / LED Drivers / Display Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://www.diodes.com/assets/Datasheets/AL1791AFE-13.pdf",
    "parts": {
      "symbol": "al1791afe-13.kicad_sym",
      "footprint": "al1791afe-13.kicad_mod",
      "model_3d": "al1791afe-13-hero.glb",
      "model_3d_plain": "al1791afe-13.glb",
      "model_3d_step": "al1791afe-13-etched.step",
      "model_3d_step_plain": "al1791afe-13.step",
      "lbr": "al1791afe-13.lbr"
    },
    "distributor_links": {
      "lcsc": "C156300",
      "digikey": "AL1791AFE-13DITR-ND",
      "mouser": "621-AL1791AFE-13"
    },
    "distributor_check": {
      "checked_at": "2026-11-13T03:23:02Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "AL1791AFE-13DITR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "621-AL1791AFE-13",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Active-high enable, internally pulled down; the device is enabled above approximately 2.5 V and disabled below 0.4 V."
      },
      {
        "number": "2",
        "name": "PWM4/GND",
        "type": "power_in",
        "description": "On the AL1791 this pin is GND (channel 4 PWM input applies only to the AL1794, where it is internally pulled down)."
      },
      {
        "number": "3",
        "name": "PWM3/GND",
        "type": "power_in",
        "description": "On the AL1791 this pin is GND (channel 3 PWM input applies only to the AL1793 and AL1794, where it is internally pulled down)."
      },
      {
        "number": "4",
        "name": "PWM2/GND",
        "type": "power_in",
        "description": "On the AL1791 this pin is GND (channel 2 PWM input applies only to the AL1792, AL1793, and AL1794, where it is internally pulled down)."
      },
      {
        "number": "5",
        "name": "PWM1",
        "type": "input",
        "description": "Channel 1 PWM or analog dimming input, internally pulled down (tie to GND if unused), with logic high at 2.5 V minimum, logic low at 0.3 V maximum, and PWM frequency of 0.5 to 4 kHz."
      },
      {
        "number": "6",
        "name": "LED1",
        "type": "output",
        "description": "Channel 1 LED cathode connected to the integrated current sink; the AL1791 maximum recommended channel current is 1.0 A, set by RSET."
      },
      {
        "number": "7",
        "name": "LED2/GND",
        "type": "power_in",
        "description": "On the AL1791 this pin is GND (channel 2 LED cathode applies only to the AL1792, AL1793, and AL1794)."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, internally connected to the exposed pad."
      },
      {
        "number": "9",
        "name": "LED3/GND",
        "type": "power_in",
        "description": "On the AL1791 this pin is GND (channel 3 LED cathode applies only to the AL1793 and AL1794)."
      },
      {
        "number": "10",
        "name": "LED4/GND",
        "type": "power_in",
        "description": "On the AL1791 this pin is GND (channel 4 LED cathode applies only to the AL1794)."
      },
      {
        "number": "11",
        "name": "LEDPG",
        "type": "output",
        "description": "Open-drain LED power-good indication, asserted low to report insufficient LED headroom, and requires an external pull-up resistor."
      },
      {
        "number": "12",
        "name": "FAULTB",
        "type": "output",
        "description": "Open-drain fault report, asserted low for LED open or short, over-temperature shutdown, or UVLO, and requires an external pull-up resistor; output low voltage is 180 mV maximum at 1 mA."
      },
      {
        "number": "13",
        "name": "REF",
        "type": "passive",
        "description": "Reference current setting through an external RSET resistor; VREF is 1.5 V typical, and IREF is 0.125 mA with RSET = 12 kΩ."
      },
      {
        "number": "14",
        "name": "VIN",
        "type": "power_in",
        "description": "Voltage input, 6.5 V to 30 V recommended operating range, with 30 V absolute maximum."
      },
      {
        "number": "15",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The exposed pad is not a numbered pin on the package (datasheet lists it only as 'Exposed PAD', inte; Pins 2, 3, 4, 7, 9, and 10 carry dual names (for example PWM4/GND). Names are kept exactly as printe; Pin types for LED1, LED cathode current sinks, LEDPG, and FAULTB are assigned as output based on the",
          "exposed pad 15 added from the footprint"
        ],
        "pages_sent": 18,
        "cost_usd": 0.0223,
        "at": "2026-11-13T03:22:51"
      },
      "datasheet": {
        "url": "https://www.diodes.com/assets/Datasheets/AL1791AFE-13.pdf",
        "pages": 18,
        "sha256": "b00e0b817e901edf",
        "source_tier": "mfr"
      },
      "cad": "land: KiCad official (CC-BY-SA 4.0); 3D: generated from the datasheet",
      "model_3d_generated": {
        "generator": "factory/gen_pkg3d.py",
        "family": "QFN",
        "height_mm": 0.6,
        "height_basis": "datasheet A, nominal",
        "standoff_mm": 0.0
      },
      "pins": {
        "total": 15,
        "described": 15,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "al1791afe-13.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.02,
          4.0,
          0.6
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "00b8095e13437ec61d9aa8f3d24758944eb83201d11d180a06810ab5410c5005",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "al1791afe-13-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.02,
          4.0,
          0.6
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "43322276da04e08cbf1c6c095e29f7ca77aefd5b2d31253a382db99a72c0d08a",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "U-DFN4030-14",
      "source_page": 16,
      "D": {
        "nom_mm": 4.0,
        "range_mm": [
          3.95,
          4.05
        ]
      },
      "E1": {
        "nom_mm": 3.0,
        "range_mm": [
          2.95,
          3.05
        ]
      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 0.6,
        "range_mm": [
          0.55,
          0.65
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "al1791afe-13.step",
        "verdict": "PASS",
        "reasons": [
          "height within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}