L78L08ACD13TR from STMicroelectronics, in a SO-8. 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	VOUT	power_out	Regulated +8 V output (±4% tolerance). Sources up to 100 mA. Recommended 0.1 µF output capacitor to GND for stability.
2	GND	power_in	Ground / common return. In this SO-8 variant pins 2, 3, 6 and 7 are internally connected to the die attach flag to improve thermal dissipation; connect to a copper heat-sink area (≈6 cm²) for rated R_thJA of 55 °C/W.
3	GND	power_in	Ground / common return, internally tied to pins 2, 6, 7 and the die attach flag for enhanced heat-sinking.
4	NC	unconnected	No internal connection. May be left floating or tied to GND.
5	NC	unconnected	No internal connection. May be left floating or tied to GND.
6	GND	power_in	Ground / common return, internally tied to pins 2, 3, 7 and the die attach flag for enhanced heat-sinking.
7	GND	power_in	Ground / common return, internally tied to pins 2, 3, 6 and the die attach flag for enhanced heat-sinking.
8	VIN	power_in	Unregulated DC input voltage. Absolute maximum 30 V for a 3.3-9 V output part (this is the 8 V variant, V_I(max)=30 V). Recommended 0.33 µF input capacitor to GND if the regulator is located far from the power supply filter.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	SO-8
Category	PMIC
Pins	8

Ordering variants

Same part, different packaging or reel option.

L78L08ACD13TR
L78L08ACD13TRABD13TR
L78L08ACD13TRACZ
L78L08ACD13TRACZ-AP
L78L08ACD13TRACZTR
L78L08ACD13TRACUTR
L78L08ACD13TRABUTR

CAD (KiCad official)

Symbol: L78L08ACD13TR
Footprint: Package_SO:TI_SO-PowerPAD-8
3D model: SO-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: STMicroelectronics datasheet (45 pp, sha256 5f83b83b3e7f09c1, 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