ME432AXG from MICRONE, in a SOT-23. 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	REF	input	Reference input. Internally compared to the 1.25 V bandgap reference; drive from the tap of the external R1/R2 divider between K and A to program V_KA = V_REF·(1 + R1/R2) + I_REF·R1. Input bias current I_REF ≈ 0.15 µA typ (0.4 µA max) at I_KA = 10 mA.
2	A	power_in	Anode. Return terminal of the shunt regulator; connected to ground/low side in typical bias applications. Sinks the cathode current back to the supply return.
3	K	power_in	Cathode. High-side terminal of the shunt regulator; typically tied through a pull-up resistor from the rail (V_KA up to 18 V, absolute max 20 V). Regulates V_KA to the programmed voltage as it sinks 70 µA-100 mA. Dynamic impedance

Key specifications

Parameter	Value
Manufacturer	MICRONE
Package	SOT-23
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

ME432AXG
ME432BXG
ME432ATG
ME432BTG
ME432ATBG
ME432BTBG
ME432NAXG
ME432NBXG

CAD (KiCad official)

Symbol: ME432AXG
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`me432axg.step`	59 KB	You want the bare part, or you mark your own boards.
`me432axg-etched.step`	1.3 MB	You want the part with `ME432AXG` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 344 faces against 69 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: MICRONE datasheet (11 pp, sha256 c3419ca376cad158, 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