AMS1086CD-5.0 from Advanced Monolithic Systems, in a TO-252-2(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	GND	power_in	Device ground / common return. Reference node for the fixed 5.0V output. Connect directly to the ground plane with a low-impedance path.
2	VOUT	power_out	Regulated 5.0V output (4.900 V to 5.100 V over line/load/temperature). Rated to 1.5 A continuous. Requires a minimum 10 µF output capacitor for loop stability; can operate with as little as 1 µF tantalum since VOUT ≥ 3.0V.
3	VIN	power_in	Unregulated input supply. Absolute maximum 15 V. For 5.0V output, VIN must be ≥ 6.5 V for the guaranteed spec (dropout ~1.3 V typ, 1.5 V max at 1.5 A). Bypass locally with a 1 µF (or larger) tantalum capacitor.
TAB	VOUT	power_out	Exposed metal tab on the back of the TO-252 package. Electrically tied to VOUT (pin 2) and used as the main heat-sinking / PCB-copper thermal pad. Solder to a copper pour connected to the output net.

Key specifications

Parameter	Value
Manufacturer	Advanced Monolithic Systems
Package	TO-252-2(DPAK)
Category	PMIC
Pins	4

Ordering variants

Same part, different packaging or reel option.

AMS1086CD-5.0
AMS1086CT-5.0
AMS1086CM-5.0
AMS1086-5.0

CAD (KiCad official)

Symbol: AMS1086CD-5.0
Footprint: Package_TO_SOT_SMD:TO-252-2
3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)

Provenance

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

Datasheet: Advanced Monolithic Systems datasheet (9 pp, sha256 3251e78bed2276e4, 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