TPS7A2045PDBVR 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 voltage supply, 1.6 V to 6.0 V. Place input capacitor (typ 1 μF) as close to IN and GND as possible to minimize input impedance.
2	GND	power_in	Common ground reference for the device.
3	EN	input	Enable input. VEN > VEN(HI) (0.9 V typ) turns the regulator on; VEN < VEN(LOW) (0.3 V max) disables the regulator and discharges VOUT to GND. Internal 500 kΩ pulldown holds the regulator off by default; the pulldown is disconnected when EN is high to reduce input current.
4	NC	unconnected	No internal electrical connection.
5	OUT	power_out	Regulated output voltage (4.5 V nominal for TPS7A2045). Requires a low-ESR output capacitor (typ 1 μF, 0.47 μF min to 200 μF max, ESR ≤ 100 mΩ) to GND for stability. Internal 150 Ω (typ) pulldown discharges VOUT when the regulator is in shutdown.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

TPS7A2045PDBVR
TPS7A2045PDBVRDBVT
TPS7A2045PDBVRDQNR
TPS7A2045PDBVRYCJR
TPS7A2045PDBVRYCKR

CAD (KiCad official)

Symbol: TPS7A2045PDBVR
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
`tps7a2045pdbvr.step`	85 KB	You want the bare part, or you mark your own boards.
`tps7a2045pdbvr-etched.step`	2.4 MB	You want the part with `TPS7A2045PDBVR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 592 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 (57 pp, sha256 0c6942715f398ba4, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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