UA78M09CKVURG3 from Texas Instruments, in a TO-252-3. 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	INPUT	power_in	Unregulated supply input. Recommended input voltage range for the UA78M09 is 11.5 V to 26 V (absolute maximum 35 V). A 0.33 uF ceramic capacitor should be placed close to this pin for input decoupling.
2	COMMON	power_in	Common / ground reference terminal. Electrically bonded to the tab of the TO-252 (KVU) package, so the mounting pad conducts both ground and heat. Return path for the load current.
3	OUTPUT	power_out	Regulated 9-V output (typ 9.0 V, min 8.6 V, max 9.4 V at 25 degC). Sources up to 500 mA continuous with internal short-circuit current limiting (~250 mA short-circuit) and safe-area compensation. A 0.1 uF ceramic capacitor is recommended close to this pin for stability.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	TO-252-3
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

UA78M09CKVURG3
UA78M09CKVURG3KC
UA78M09CKVURG3KCS
UA78M09CKVURG3KTP
UA78M09CKVURG3DCY

CAD (KiCad official)

Symbol: UA78M09CKVURG3
Footprint: Package_TO_SOT_SMD:TO-252-2
3D model: TO-252-3 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (29 pp, sha256 7e43ff2bfe981b4d, retrieved 2026-08-17, tier: lcsc)
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