TLV1117-33CDCYR 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	ADJ/GND	power_in	Ground pin for fixed-voltage variants (TLV1117-33 = 3.3-V fixed). On the adjustable TLV1117 this pin is the ADJ feedback input for the external resistor divider; on fixed-output devices such as the -33 it functions as the device ground reference.
2	OUTPUT	power_out	Regulated 3.3-V output. Supplies up to 800 mA. Requires an output capacitor for stability; place close to the pin.
3	INPUT	power_in	Unregulated input voltage pin. For the TLV1117-33 the recommended V_IN range is 4.7 V to 15 V (absolute maximum 16 V). Bypass with a capacitor close to the pin.
4	OUTPUT	power_out	SOT-223 thermal tab, internally connected to OUTPUT (pin 2). Solder to a copper pour for heat sinking and connect to the OUTPUT net.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

TLV1117-33CDCYR
TLV1117-33CDCYRDRJ
TLV1117-33CDCYRKVU
TLV1117-33CDCYRKCS
TLV1117-33CDCYRKCT
TLV1117-33CDCYRKTT

CAD (KiCad official)

Symbol: TLV1117-33CDCYR
Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
3D model: SOT-223 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (39 pp, sha256 ec710cfae85d9a30, 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