TPS73733DCQR from Texas Instruments, in a SOT-223-6. 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	IN	power_in	Regulator input supply. Accepts 2.2V to 5.5V (absolute max 6.0V). Bypass to GND with a low-ESR ceramic capacitor close to the pin.
2	OUT	power_out	Regulated 3.3V output, up to 1A. Requires a 1.0µF or larger ceramic output capacitor for stability. Dropout is ~130mV typ at 1A.
3	GND	power_in	Device ground reference. Tab (pin 6) is also GND and should be tied to this net through the PCB copper for thermal dissipation.
4	NR/FB	input	On fixed-output versions (TPS73733) this pin is the noise-reduction (NR) node - an optional bypass capacitor to GND lowers output noise. On the adjustable TPS73701 the same pin becomes the feedback (FB) input from an external R1/R2 divider (V_FB internal reference ≈ 1.198-1.210V).
5	EN	input	Enable input, active high. V_EN(HI) ≥ 1.7V enables the regulator; V_EN(LO) ≤ 0.5V forces shutdown (I_SHDN ≈ 20nA typ). Do not float. Absolute max −0.3V to +6.0V.
6	GND (TAB)	power_in	SOT-223 metal tab, internally tied to GND. Solder to a copper ground pour for thermal dissipation; must be electrically bonded to GND.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOT-223-6
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

TPS73733DCQR
TPS73733DCQRDRB
TPS73733DCQRDRBT
TPS73733DCQRDRBR
TPS73733DCQRDRV
TPS73733DCQRDRVT
TPS73733DCQRDRVR

CAD (KiCad official)

Symbol: TPS73733DCQR
Footprint: Package_TO_SOT_SMD:SOT-223-6
3D model: SOT-223-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tps73733dcqr.step`	120 KB	You want the bare part, or you mark your own boards.
`tps73733dcqr-etched.step`	2.2 MB	You want the part with `TPS73733DCQR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 534 faces against 36 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: Texas Instruments datasheet (32 pp, sha256 d13584b386b9f8d9, 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