TPS79318DBVR from Texas Instruments, in a SOT-23-5. 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	Input supply to the regulator. Recommended input voltage range 2.7 V to 5.5 V; absolute maximum 6 V. Bypass with a 0.1-µF to 1-µF ceramic capacitor to GND.
2	GND	power_in	Regulator ground reference. All voltages are measured with respect to this pin.
3	EN	input	Enable pin. Driving EN high (up to VIN) turns on the regulator; driving it low puts the regulator into shutdown mode. Tie to IN if unused. Absolute maximum -0.3 V to 6 V.
4	NR	passive	Noise Reduction pin. Connect an external capacitor (up to 10 nF) from this pin to GND to filter noise generated by the internal bandgap reference, improving PSRR and reducing output noise.
5	OUT	power_out	Regulated output pin. Fixed 1.8-V output at up to 200 mA (TPS79318). Requires a 2.2-µF (minimum) ceramic output capacitor to GND for stability; 10 µF recommended.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOT-23-5
Category	PMIC
Pins	5

Ordering variants

Same part, different packaging or reel option.

TPS79318DBVR
TPS79318DBVRDBVT
TPS79318DBVRYZQR
TPS79318DBVRYZQT

CAD (KiCad official)

Symbol: TPS79318DBVR
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tps79318dbvr.step`	85 KB	You want the bare part, or you mark your own boards.
`tps79318dbvr-etched.step`	2.3 MB	You want the part with `TPS79318DBVR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 566 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: Texas Instruments datasheet (33 pp, sha256 49694a90e8294ec9, 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