component

TX4137

Public Unreviewed

by Ray

XDS DC-DC Converters, SOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpmictx4137
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Contents

README

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TX4137

XDS · DC-DC Converters · SOT-23-6

TX4137 from XDS, in a SOT-23-6. Pinout and pin descriptions extracted from the datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 NC unconnected No connect. Leave floating.
2 GND power_in Ground reference for the IC. Connect to the system ground plane using a large copper area to improve thermal dissipation.
3 FB input Output feedback voltage pin. Connect to the mid-point of an external resistor divider from VOUT to GND. The internal reference is 0.812V (typ, 0.792-0.832V). Absolute max 6V.
4 EN input Chip enable input. Rising threshold ~1.35V, falling ~1.17V, hysteresis 180mV. Do not leave floating; pull up to IN through ~510kΩ if unused. Absolute max 6V.
5 IN power_in Chip power input. Operates from 5.5V to 60V (abs max 65V). Bypass with a low-ESR ceramic capacitor (X5R/X7R, typically 4.7µF) placed close to the pin.
6 SW output Switch node output; drain of the internal high-side power MOSFET (RDS(on) ≈ 0.9Ω). Connect to the inductor and to the freewheeling Schottky diode cathode. Operates from -0.3V to VIN+0.3V.

Key specifications

Parameter Value
Manufacturer XDS
Package SOT-23-6
Category PMIC
Pins 6

CAD (KiCad official)

  • Symbol: TX4137
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
tx4137.step 97 KB You want the bare part, or you mark your own boards.
tx4137-etched.step 1.1 MB You want the part with TX4137 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 285 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 (8 pp, sha256 977d631c3d6360a2, retrieved 2026-08-17, tier: lcsc)
  • 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