ETA5050V0S2F from etasolution, in a SOT23-5. 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	VIN	power_in	Input supply pin, 2.0V to 6.0V operating range (absolute max 8V). Bypass with a 1uF ceramic capacitor to GND close to the pin.
2	GND	power_in	Device ground reference and return for the internal reference, error amplifier, and pass FET.
3	EN	input	Enable pin. Drive high (>=1.5V, or >=1.0V at VIN=3.3V) to turn on the regulator; drive low (<=0.5V, or <=0.65V at VIN=3.3V) to place the part in shutdown (<1uA). Do not leave floating.
4	FB	input	Feedback pin, regulated to 0.8V (0.784-0.816V). Connect the top of an external resistor divider from VOUT to FB with the bottom leg to GND; Vout = 0.8V * (R1+R2)/R2. An optional 10pF feed-forward cap across R1 is recommended when Vout <= 1.2V.
5	VOUT	power_out	Regulated output voltage pin, up to 500mA continuous (current limit ~1.05A). Requires a 2.2uF ceramic output capacitor to GND for stability and transient response.

Key specifications

Parameter	Value
Manufacturer	etasolution
Package	SOT23-5
Category	PMIC
Pins	5

Ordering variants

Same part, different packaging or reel option.

ETA5050V0S2F

CAD (KiCad official)

Symbol: ETA5050V0S2F
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`eta5050v0s2f.step`	85 KB	You want the bare part, or you mark your own boards.
`eta5050v0s2f-etched.step`	2.3 MB	You want the part with `ETA5050V0S2F` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 564 faces against 102 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: etasolution datasheet (6 pp, sha256 37f272bb3d4651e7, 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