component

TX6143

Public Made by Adom

by adom

XDS LED Drivers, SOT-89-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

componentled-drvtx6143
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs tx6143: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
page.json tx6143: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 18h ago
README.md tx6143: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 18d ago
tx6143-etched.fit.json tx6143: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
tx6143-etched.glb tx6143: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
tx6143-etched.step tx6143: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
tx6143.glb fix footprint: SOT-89-3 -> SOT-89-5 (pad_count, 5 pins) · Ray 1mo ago
tx6143.kicad_mod fix footprint: SOT-89-3 -> SOT-89-5 (pad_count, 5 pins) · Ray 1mo ago
tx6143.kicad_sym Publish 0.1.0 · Ray 1mo ago
tx6143.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect and oval pad as a SQUARE EAGLE smd; this carries the real pad shape across (0 -> 4 rounded pads) and stops dropping geometry drawn on KiCad User.N layers. Attributes, connects, pads and the pin-1 marker are gated against decreasing and are unchanged. · Ray 1mo ago
tx6143.step fix footprint: SOT-89-5 -> SOT-89-5 (3d refresh; body regenerated from the footprint F.Fab outline) · Ray 1mo ago

TX6143

XDS · LED Drivers · SOT-89-5

TX6143 from XDS, in a SOT-89-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 SW output 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.
2 VSS power_in Chip ground / return for internal MOSFET source and control circuitry.
3 DIM input 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.
4 CS input 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.
5 VIN power_in 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.

Key specifications

Parameter Value
Manufacturer XDS
Package SOT-89-5
Category LED-drv
Pins 5

CAD (KiCad official)

  • Symbol: TX6143
  • Footprint: Package_TO_SOT_SMD:SOT-89-5
  • 3D model: SOT-89-5 (KiCad packages3D, STEP)
  • 3D model files: tx6143-etched.step / tx6143-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tx6143.step / tx6143.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
tx6143.step 86 KB You want the bare part, or you mark your own boards.
tx6143-etched.step 970 KB You want the part with TX6143 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 244 faces against 26 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: XDS datasheet (10 pp, sha256 3379b085ea49eafe, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF