TX6143

{
  "schema_version": 1,
  "type": "component",
  "slug": "tx6143",
  "title": "TX6143",
  "brief": "XDS LED Drivers, SOT-89-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "led-drv",
    "tx6143"
  ],
  "component": {
    "mpn": "TX6143",
    "manufacturer": "XDS",
    "package": "SOT-89-5",
    "pin_count": 5,
    "category": "LED-drv",
    "subcategory": "LED Drivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/9caba9ce7578683d005f1ff4539187e3.pdf",
    "parts": {
      "symbol": "tx6143.kicad_sym",
      "footprint": "tx6143.kicad_mod",
      "model_3d": "tx6143-etched.glb",
      "model_3d_plain": "tx6143.glb",
      "model_3d_step": "tx6143-etched.step",
      "model_3d_step_plain": "tx6143.step",
      "lbr": "tx6143.lbr"
    },
    "distributor_links": {
      "lcsc": "C448629"
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "output",
        "description": "Switch node - drain of the internal 60V power MOSFET (RDSon ~300 mΩ, max 1.2A). Connects to the inductor / freewheel Schottky cathode in the buck topology."
      },
      {
        "number": "2",
        "name": "VSS",
        "type": "power_in",
        "description": "Chip ground / return for internal MOSFET source and control circuitry."
      },
      {
        "number": "3",
        "name": "DIM",
        "type": "input",
        "description": "Brightness/dimming control input. Accepts PWM (up to 20 kHz) or analog (0.5V-2.5V) dimming; VIH ≥ 2.5V, VIL ≤ 0.3V. Internal ~500 kΩ pull-up to a 5V internal LDO - leave floating if dimming is not used. VDIM absolute-max is 6V. Output shuts off (standby) when DIM < 0.3V."
      },
      {
        "number": "4",
        "name": "CS",
        "type": "input",
        "description": "High-side current-sense input. External sense resistor RCS between VIN and CS sets the LED current: ILED ≈ 0.2V / RCS. Hysteretic thresholds are 240 mV (peak) and 160 mV (valley) across VIN-CS. Input bias ~10 µA."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Main supply input, 5.5V to 60V operating (68V absolute max). UVLO rising ≈ 5.1V with 0.4V hysteresis. Bypass with 47-100 µF bulk capacitor rated above max VIN. Standby current ~320 µA at 12V when DIM=0."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/9caba9ce7578683d005f1ff4539187e3.pdf",
        "pages": 10,
        "sha256": "3379b085ea49eafe",
        "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": [
        -1.85,
        -1.5
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-89-5@sha256:9abcedfc1a89eea0",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "tx6143.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.2,
          4.5,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5bf9133f79d12f58c4da043d3892ba5cec700de6f3255a5358e7ec3200be4733",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tx6143-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.2,
          4.5,
          1.5
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "38244eaa61fd79caeaa100324c771e9a2c81661ba9c1c73faac6a6cf968e21b8",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "XDS",
      "Package": "SOT-89-5",
      "Category": "LED-drv",
      "Pins": "5"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tx6143"
  ],
  "discovery_pitch": "TX6143 (XDS) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tx6143.kicad_sym",
    "tx6143.kicad_mod",
    "tx6143.glb",
    "tx6143.step",
    "tx6143-etched.step",
    "tx6143.lbr",
    "docs/hero.png",
    "docs/tx6143-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "updated_at": "2026-09-25T13:19:32.748Z"
}