TX4211 from XDS, in a SOT-23-6L. 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	power_out	Switch node. Drain of the internal 4 A / ~80 mΩ NMOS power switch; connect to the boost inductor and Schottky rectifier. Absolute-max SW voltage is 30 V (VIN + 0.3 V min).
2	GND	power_in	Device ground / power return for the internal MOSFET and control circuitry.
3	FB	input	Feedback input to the error amplifier. Connect a resistor divider from VOUT to FB to GND; VOUT = 0.6 V x (1 + R1/R2). Internal reference is 0.6 V (typ, 0.588-0.612 V). FB input bias current is about −10 nA (−50 nA max) at VFB = 0.6 V. Absolute-max FB voltage is 6 V.
4	EN	input	Enable input, active high. VIH ≥ 1.5 V enables the converter; VIL ≤ 0.4 V shuts the part down (shutdown current ~0.1 µA typ, 1 µA max). Absolute-max input is 26 V.
5	VDD	power_in	Supply input. Operating range 2 V to 24 V (absolute-max 26 V). UVLO ~1.98 V with 100 mV hysteresis. Bypass close to the pin with a 22 µF X5R/X7R ceramic capacitor.
6	NC	unconnected	No connect. Leave floating or tie to GND for improved layout robustness; no internal connection.

Key specifications

Parameter	Value
Manufacturer	XDS
Package	SOT-23-6L
Category	Logic
Pins	6

CAD (KiCad official)

Symbol: TX4211
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6L (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tx4211.step`	97 KB	You want the bare part, or you mark your own boards.
`tx4211-etched.step`	1.0 MB	You want the part with `TX4211` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 276 faces against 117 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 (7 pp, sha256 2e1deb1311073052, 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