ME6231A50M3G from MICRONE, in a SOT23-3. 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	VSS	power_in	Ground return for the regulator. Connect to the system ground plane; place the CIN/CL bypass capacitor grounds close to this pin to minimize noise and improve PSRR.
2	VOUT	power_out	Regulated 5.0 V output (±1% accuracy). Capable of sourcing up to 500 mA (typ) with 125 mV dropout at IOUT=100 mA. Requires a ceramic output capacitor CL (recommended 10 µF, X5R/X7R) to VSS; a 0.1 µF bypass is not required. Internal active discharge (~500 Ω) pulls VOUT low when the part is disabled internally.
3	VIN	power_in	Unregulated supply input, 3 V to 18 V operating range (20 V absolute max). Bypass to VSS with a 10 µF ceramic capacitor (X5R/X7R recommended). Quiescent current is 1.8 µA typical.

Key specifications

Parameter	Value
Manufacturer	MICRONE
Package	SOT23-3
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

ME6231A50M3GA18M3G
ME6231A50M3GA30M3G
ME6231A50M3GA33M3G
ME6231A50M3GA44M3G
ME6231A50M3G
ME6231A50M3GA30PG
ME6231A50M3GA33PG
ME6231A50M3GA36PG
ME6231A50M3GA40PG
ME6231A50M3GA44PG
ME6231A50M3GA50PG
ME6231A50M3GC18M5G
ME6231A50M3GC28M5G
ME6231A50M3GC30M5G
ME6231A50M3GC33M5G
ME6231A50M3GC36M5G
ME6231A50M3GC50M5G
ME6231A50M3GC33N4CG

CAD (KiCad official)

Symbol: ME6231A50M3G
Footprint: Package_TO_SOT_SMD:SOT-23-3
3D model: SOT23-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`me6231a50m3g.step`	59 KB	You want the bare part, or you mark your own boards.
`me6231a50m3g-etched.step`	2.3 MB	You want the part with `ME6231A50M3G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 549 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 (13 pp, sha256 d4428272cf6ce8bd, 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