NCP115AMX105TCG from onsemi, in a XDFN-4-EP(1x1). 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	OUT	power_out	Regulated 1.05 V output pin (300 mA max). A ceramic capacitor with minimum value of 1 uF is required from this pin to GND to assure stability. Current limit typ. 600 mA; short-circuit protected.
2	GND	power_in	Power supply ground reference. Should be tied to the ground plane; the exposed pad (EPAD, on XDFN4) must also be soldered to this ground for effective heat removal.
3	EN	input	Enable input. Driving EN above 0.9 V (V_EN_HI) turns the regulator on; driving EN below 0.4 V (V_EN_LO) puts the device into shutdown mode. Input current typ. 0.3 uA at V_EN = 5.5 V. Absolute max -0.3 V to 6 V.
4	IN	power_in	Unregulated input supply, 1.7 V to 5.5 V (absolute max 6 V). A small ceramic capacitor (>= 1 uF) is required from this pin to ground to assure stability.
EPAD	EPAD	power_in	Exposed thermal pad on the bottom of the XDFN4 package. Must be connected directly to the GND pin and soldered to a large ground copper plane to enable effective heat removal (R_theta_JA = 208 degC/W with 645 mm^2 Cu area).

Key specifications

Parameter	Value
Manufacturer	onsemi
Package	XDFN-4-EP(1x1)
Category	Power Supply Chip
Pins	5

Ordering variants

Same part, different packaging or reel option.

NCP115AMX105TCG
NCP115AMX105TCGSN

CAD (KiCad official)

Symbol: NCP115AMX105TCG
Footprint: Package_DFN_QFN:OnSemi_XDFN4-1EP_1.0x1.0mm_EP0.52x0.52mm
3D model: XDFN-4-EP(1x1) (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: onsemi datasheet (19 pp, sha256 50d755fd53bcfc9a, 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