ETA8113S2G from etasolution, in a SOT23-6. 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	BST	passive	Bootstrap pin for the high-side FET gate drive. Connect a 10nF ceramic capacitor from this pin to SW to develop the boosted rail (BST voltage rated -0.3V to SW+6V).
2	GND	power_in	Device ground return. Connect to the system ground plane; also serves as the return for the input bypass capacitor and the FB divider.
3	FB	input	Feedback input to the internal error/COT comparator. Connect an external resistor divider from VOUT to FB and GND to set VOUT = 0.603V x (1 + R1/R2). R2 must be between 1k and 20k. FB rated -0.3V to 6V; FB hiccup UV threshold 0.4V.
4	EN	input	Enable input. Drive high (>1.2V typ) to turn the regulator on, low (<1.1V typ) or floating to disable. Internal 1M pull-down to GND ensures the part is off when the pin floats. Can be tied to IN through a pull-up (or directly) for auto-start. Rated -0.3V to 19V.
5	IN	power_in	Supply input, 4.5V to 18V operating range (absolute max 19V, OVP trips at 19V rising with 0.9V hysteresis, UVLO 4.05V rising with 320mV hysteresis). Bypass with a 10uF ceramic capacitor to GND placed close to the IN and GND pins.
6	SW	power_out	Switch node; drain connection of both internal power MOSFETs (high-side 83m, low-side 50m). Connect the power inductor between SW and the regulator output. Rated -0.3V (-5V for <10ns) to 19V (23V for <10ns). Delivers up to 3A; high-side current limit 4.7A typ.

Key specifications

Parameter	Value
Manufacturer	etasolution
Package	SOT23-6
Category	Logic
Pins	6

Ordering variants

Same part, different packaging or reel option.

ETA8113S2G

CAD (KiCad official)

Symbol: ETA8113S2G
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`eta8113s2g.step`	97 KB	You want the bare part, or you mark your own boards.
`eta8113s2g-etched.step`	2.0 MB	You want the part with `ETA8113S2G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 494 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: etasolution datasheet (9 pp, sha256 380c7eb2c0176204, 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