TX6120

{
  "schema_version": 1,
  "type": "component",
  "slug": "tx6120",
  "title": "TX6120",
  "brief": "XDS LED Drivers, ESOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "led-drv",
    "tx6120"
  ],
  "component": {
    "mpn": "TX6120",
    "manufacturer": "XDS",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "LED-drv",
    "subcategory": "LED Drivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/724bafec9570944034f61680c353ef9d.pdf",
    "parts": {
      "symbol": "tx6120.kicad_sym",
      "footprint": "tx6120.kicad_mod",
      "model_3d": "tx6120-etched.glb",
      "model_3d_plain": "tx6120.glb",
      "model_3d_step": "tx6120-etched.step",
      "model_3d_step_plain": "tx6120.step",
      "lbr": "tx6120.lbr"
    },
    "distributor_links": {
      "lcsc": "C329272"
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return for the IC. Connect to the low side of the current-sense resistor R2 and to the system ground plane with a short, wide trace."
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect. Leave floating (悬空不接)."
      },
      {
        "number": "3",
        "name": "DIM",
        "type": "input",
        "description": "Dimming input. Pulling DIM to GND disables the LED output; >1.3V forces 100% output. Supports both PWM dimming and linear dimming (linear range 0.3-1.25 V). Must not be left floating; a small cap (>=10nF) to GND is recommended in linear-dimming mode."
      },
      {
        "number": "4",
        "name": "SW",
        "type": "output",
        "description": "Switch node. Internally connected to the drain of the 100V integrated power MOSFET (RDS(on) ≈ 150 mΩ at VGS=5V). Connect to the buck inductor and freewheeling diode. Exposed pad (EP) is also tied here."
      },
      {
        "number": "5",
        "name": "CS",
        "type": "input",
        "description": "Current-sense input (peak current detection). Connect together with pin 6 to the top of the sense resistor R2. Peak trip threshold VCS_TH ≈ 255 mV (245-265 mV)."
      },
      {
        "number": "6",
        "name": "CS",
        "type": "input",
        "description": "Current-sense input (duplicate CS pin). Tied to pin 5 and to the top of the current-sense resistor R2 for peak-current control."
      },
      {
        "number": "7",
        "name": "TOFF",
        "type": "input",
        "description": "Fixed off-time setting. Off-time is set by an external capacitor C1: TOFF = 0.51 × 150 kΩ × (C1 + 8 pF) + TD, with TD = 61 ns. If left unconnected, internal default off-time is 650 ns."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply input for the IC. Fed from VIN through a series resistor R1; an internal 5.5 V clamp/zener regulates VDD (max clamp current 10 mA). Operating input voltage range for the application 3.6-100 V (from VIN); UVLO ≈ 3.2 V with 0.5 V hysteresis; typical operating current 1.5 mA @ 200 kHz."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "output",
        "description": "Exposed thermal pad on the bottom of the ESOP-8. Internally connected to SW (MOS drain). Solder to the SW copper pour for heat dissipation; do NOT connect to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/724bafec9570944034f61680c353ef9d.pdf",
        "pages": 7,
        "sha256": "a0dd331e5b699e8f",
        "source_tier": "lcsc"
      },
      "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": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm@sha256:5848244c5e72002e",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "tx6120.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tx6120-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "0e77cda209acdb4705c21dfce734b8cac492908a3eae1bedb8c1e399a23eec70",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "XDS",
      "Package": "ESOP-8",
      "Category": "LED-drv",
      "Pins": "9"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tx6120"
  ],
  "discovery_pitch": "TX6120 (XDS) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tx6120.kicad_sym",
    "tx6120.kicad_mod",
    "tx6120.glb",
    "tx6120.step",
    "tx6120-etched.step",
    "tx6120.lbr",
    "docs/hero.png",
    "docs/tx6120-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "updated_at": "2026-09-25T13:18:44.306Z"
}