LR7533-T from LR, in a SOT-23-3. 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	VSS	power_in	Ground / common return for the regulator. All voltages in the datasheet are referenced to this pin.
2	VOUT	power_out	Regulated 3.3V output (±2% tolerance). Supplies up to 100mA typical load current (150mA absolute max). Requires an external output capacitor of 1-10uF for stability and transient response.
3	VIN	power_in	Unregulated input supply. Operates from VOUT+dropout up to 24V (32V absolute max). Requires an external input bypass capacitor, especially with high-impedance sources such as batteries. Dropout is typically 390mV at 50mA and 750mV at 100mA.

Key specifications

Parameter	Value
Manufacturer	LR
Package	SOT-23-3
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

LR7533-TT
LR7533-TM

CAD (KiCad official)

Symbol: LR7533-T
Footprint: Package_TO_SOT_SMD:SOT-23-3
3D model: SOT-23-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lr7533-t.step`	59 KB	You want the bare part, or you mark your own boards.
`lr7533-t-etched.step`	1.4 MB	You want the part with `LR7533-T` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 338 faces against 69 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: LR datasheet (13 pp, sha256 0b58c65ef75e4ef4, 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