NCV5501DT33RKG from onsemi, in a DPAK. 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	Positive power supply input. Operating range Vout+VDO to 16 V (absolute max +18 V). Bypass locally with a 10 µF ceramic capacitor.
2	GND	power_in	Device ground / return. Internally connected to the exposed tab, which is the primary thermal path (RθJC = 5.2 °C/W).
TAB	GND	power_in	Exposed tab, internally connected to pin 2 (GND). Serves as the main thermal path to the PCB copper.
3	Vout	power_out	Regulated 3.3 V output, up to 500 mA. Requires a minimum 4.7 µF ceramic output capacitor for stability.

Key specifications

Parameter	Value
Manufacturer	onsemi
Package	DPAK
Category	PMIC
Pins	4

Ordering variants

Same part, different packaging or reel option.

NCV5501DT33RKG
NCV5501DT33RKGDT15RKG
NCV5501DT33RKGDT50RKG
NCV5501DT33RKGDT-ADJRKG
NCV5501DT33RKGD2T33RKG
NCV5501DT33RKGD2T15RKG
NCV5501DT33RKGD2T50RKG
NCV5501DT33RKGD2T-ADJRKG
NCV5501DT33RKGD33R2G
NCV5501DT33RKGD15R2G
NCV5501DT33RKGD50R2G
NCV5501DT33RKGDAR2G
NCV5501DT33RKGDBR2G

CAD (KiCad official)

Symbol: NCV5501DT33RKG
Footprint: Package_TO_SOT_SMD:TO-252-2
3D model: DPAK (KiCad packages3D, STEP)

Provenance

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

Datasheet: onsemi datasheet (13 pp, sha256 ee4a466abdd675ae, retrieved 2026-08-17, tier: manufacturer)
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