HX3406

{
  "schema_version": 1,
  "type": "component",
  "slug": "hx3406",
  "title": "HX3406",
  "brief": "HX hengjiaxing DC-DC Converters, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "hx3406"
  ],
  "component": {
    "mpn": "HX3406",
    "manufacturer": "HX hengjiaxing",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/7180e8582bca0b1e97c2c30f31b32d63.pdf",
    "parts": {
      "symbol": "hx3406.kicad_sym",
      "footprint": "hx3406.kicad_mod",
      "model_3d": "hx3406-etched.glb",
      "model_3d_plain": "hx3406.glb",
      "model_3d_step": "hx3406-etched.step",
      "model_3d_step_plain": "hx3406.step",
      "lbr": "hx3406.lbr"
    },
    "distributor_links": {
      "lcsc": "C296282"
    },
    "pins": [
      {
        "number": "1",
        "name": "CE",
        "type": "input",
        "description": "Chip enable input. Drive above VCEL (min 1.2V at VIN=5V) to enable the regulator; drive below VCEH (max 0.9V at VIN=5V) to place the device into shutdown (standby current 0-1uA). Absolute max VCE = -0.3V to VIN+0.3V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the IC. Connect to the system ground with a low-impedance path; carries the return current for the internal N-channel power MOSFET switching node."
      },
      {
        "number": "3",
        "name": "LX",
        "type": "output",
        "description": "Internal power switch output (switching node). Connects to the external inductor (typ 2.2uH). Absolute max current ±1500mA; peak current limit typically 1000mA. P-MOSFET RDSON ~0.35Ω, N-MOSFET RDSON ~0.3Ω at ISW=300mA."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input, 1.8V to 5.5V operating range (absolute max 6.5V). Bypass to GND with a 4.7uF ceramic capacitor close to the pin."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback input. Regulates to an internal reference of 0.6V (typ; 0.59-0.61V). Connect to the midpoint of the external R1/R2 divider from VOUT to GND; FB input bias current is <±50nA at VFB=0.65V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/7180e8582bca0b1e97c2c30f31b32d63.pdf",
        "pages": 6,
        "sha256": "67a054e588212fef",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "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-23-5@sha256:455a3f7c3e5eb5b8",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "hx3406.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": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "hx3406-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": "9c00ca7a216b306eab45e98870b00385531d93005ef44caf6ec15e36ddc7646e",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HX hengjiaxing",
      "Package": "SOT-23-5",
      "Category": "PMIC",
      "Pins": "5"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "hx3406"
  ],
  "discovery_pitch": "HX3406 (HX hengjiaxing) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "hx3406.kicad_sym",
    "hx3406.kicad_mod",
    "hx3406.glb",
    "hx3406.step",
    "hx3406-etched.step",
    "hx3406.lbr",
    "docs/hero.png",
    "docs/hx3406-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "HX3406AFMR",
      "kind": "packaging"
    },
    {
      "mpn": "HX3406AFML",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T22:15:26.372Z"
}