TLV1117LV33DCYR from Texas Instruments, in a SOT-223. 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	GND	power_in	Ground pin. Device reference return; connect to system ground. Note that the pinout labels this pin as GND for the fixed-voltage TLV1117LV33 (Figure 1/Pin Configurations shows 'ADJ/GND' as the family label because the LV series also covers adjustable variants; for the fixed 3.3-V DCY device this pin is GND).
2	OUT	power_out	Regulated 3.3-V output pin. Delivers up to 1 A with 455 mV typical dropout at 1 A. Requires an output capacitor (1.0 µF typical, stable with 0-Ω ESR ceramic). The SOT-223 tab is internally connected to OUT and should be soldered to a copper pour for thermal dissipation.
3	IN	power_in	Unregulated input voltage pin. Operating range 2.0 V to 5.5 V (absolute maximum 6.0 V). Recommended input decoupling per Input and Output Capacitor Requirements in the Application Information section.
Tab	OUT	power_out	SOT-223 thermal tab, internally tied to OUT (pin 2). Solder to a copper plane to reduce θJA (62.9 °C/W on high-K JEDEC board) and to carry output current.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOT-223
Category	PMIC
Pins	4

Ordering variants

Same part, different packaging or reel option.

TLV1117LV33DCYR
TLV1117LV33DCYRDCYT

CAD (KiCad official)

Symbol: TLV1117LV33DCYR
Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
3D model: SOT-223 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tlv1117lv33dcyr.step`	64 KB	You want the bare part, or you mark your own boards.
`tlv1117lv33dcyr-etched.step`	2.0 MB	You want the part with `TLV1117LV33DCYR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 506 faces against 75 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 (20 pp, sha256 0f209d00b1708ed0, 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