LD2980ABM33TR from STMicroelectronics, in a SOT-23-5L. 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	Unregulated DC input supply. Operating range 2.5 V to 16 V; absolute max -0.3 to 16 V. Bypass with a 1 µF input capacitor close to the pin.
2	GND	power_in	Device ground reference for both the input supply and the regulated output.
3	INHIBIT	input	TTL-compatible ON/OFF control input. Drive high (VIH >= 1.6 V) to enable the regulator; drive low (VIL <= 0.18 V) to shut it down (<1 µA off-mode current). Not internally pulled-up and must not be left floating; absolute max -0.3 to 16 V.
4	NC	unconnected	No internal connection. Leave floating or tie to a convenient net; not required for device operation.
5	VOUT	power_out	Regulated 3.3 V output (LD2980ABM33: 3.284-3.317 V typ. at 1 mA). Guaranteed output current up to 50 mA with internal current and thermal limiting. Requires a 2.2 µF low-ESR ceramic output capacitor for stability.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	SOT-23-5L
Category	PMIC
Pins	5

Ordering variants

Same part, different packaging or reel option.

LD2980ABM33TR
LD2980ABM33TRCM33TR
LD2980ABM30TR
LD2980ABM33TRCM18TR
LD2980ABM33TRCM30TR
LD2980ABM33TRABM50TR
LD2980ABM33TRCM50TR

CAD (KiCad official)

Symbol: LD2980ABM33TR
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5L (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ld2980abm33tr.step`	85 KB	You want the bare part, or you mark your own boards.
`ld2980abm33tr-etched.step`	2.7 MB	You want the part with `LD2980ABM33TR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 644 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: STMicroelectronics datasheet (22 pp, sha256 38bf5b337c2cb448, 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