LP3321B6F

{
  "schema_version": 1,
  "type": "component",
  "slug": "lp3321b6f",
  "title": "LP3321B6F",
  "brief": "LOWPOWER LED Drivers, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "led-drv",
    "lp3321b6f"
  ],
  "component": {
    "mpn": "LP3321B6F",
    "manufacturer": "LOWPOWER",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "LED-drv",
    "subcategory": "LED Drivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/4e588287772d4c53cfb6c894b365ce81.pdf",
    "parts": {
      "symbol": "lp3321b6f.kicad_sym",
      "footprint": "lp3321b6f.kicad_mod",
      "model_3d": "lp3321b6f-etched.glb",
      "model_3d_plain": "lp3321b6f.glb",
      "model_3d_step": "lp3321b6f-etched.step",
      "model_3d_step_plain": "lp3321b6f.step",
      "lbr": "lp3321b6f.lbr"
    },
    "distributor_links": {
      "lcsc": "C517219"
    },
    "pins": [
      {
        "number": "1",
        "name": "LX",
        "type": "output",
        "description": "Output switching node (drain of the internal 1.5A N-MOSFET). Connects to the boost inductor and Schottky diode. Absolute max -0.3V to 46V; internal RDS(on) ~400 mOhm; 1.0MHz switching."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Must be connected to a strong ground plane for heat sinking and noise protection."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Feedback reference voltage pin. Connect a current-sense resistor between the LED string cathode and GND; the internal reference regulates this pin to 200mV (ILED = 200mV / R1). Feedback input current ~50nA. Abs max -0.3V to 46V."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Chip enable (active high) and PWM dimming input. High impedance; requires a ~100k pull-down to GND when the control signal may be floating. VIL <= 0.4V, VIH >= 1.4V. Accepts PWM dimming from 200Hz to 200kHz (down to 1% duty cycle with PWM < 50kHz)."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect. Leave floating or tie to GND per layout preference."
      },
      {
        "number": "6",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input voltage pin, 2.5V to 5.5V operating range (abs max 6.5V). Bypass with a 1uF (or 10uF as shown in the typical application) ceramic capacitor close to the pin to reduce input noise. UVLO ~2.3V with 0.25V hysteresis."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/4e588287772d4c53cfb6c894b365ce81.pdf",
        "pages": 9,
        "sha256": "86792229b56b7ee6",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-6@sha256:f341c73aac9dcb55",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "lp3321b6f.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lp3321b6f-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "cfbcc4b2938405a15243cc6386c5f305345a8d1643f3220fd68a6baa47b79b1b",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "LOWPOWER",
      "Package": "SOT-23-6",
      "Category": "LED-drv",
      "Pins": "6"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lp3321b6f"
  ],
  "discovery_pitch": "LP3321B6F (LOWPOWER) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lp3321b6f.kicad_sym",
    "lp3321b6f.kicad_mod",
    "lp3321b6f.glb",
    "lp3321b6f.step",
    "lp3321b6f-etched.step",
    "lp3321b6f.lbr",
    "docs/hero.png",
    "docs/lp3321b6f-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "LP3321B6F",
      "kind": "packaging"
    },
    {
      "mpn": "LP3321B6FQVF",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-28T17:54:09.731Z"
}