LM22674MRX-ADJ from Texas Instruments, in a SOIC-8-EP. 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	BOOT	passive	Bootstrap capacitor input. Provides the gate drive voltage for the high-side N-channel power MOSFET; connect a bootstrap capacitor between BOOT and SW.
2	NC	unconnected	Not connected to die. Pin functions as a thermal conductor; may be tied to GND on the PCB for improved heat spreading.
3	NC	unconnected	Not connected to die. Pin functions as a thermal conductor; may be tied to GND on the PCB for improved heat spreading.
4	FB	input	Feedback input to the regulator error amplifier. For the -ADJ version, connect an external resistor divider from VOUT to set the output voltage; internal reference is 1.285 V (typ).
5	EN	input	Precision enable input used to control regulator start-up and shutdown. Rising threshold ~1.6 V (typ), 0.6 V hysteresis; drive low for shutdown (25 µA typ standby current).
6	GND	power_in	System ground return for the regulator. Connect to the exposed pad and PCB ground plane for best thermal and electrical performance.
7	VIN	power_in	Source input voltage supply to the regulator. Operating range 4.5 V to 42 V; bypass with a low-ESR ceramic capacitor placed close to the pin.
8	SW	output	Switching output node of the internal high-side N-channel MOSFET. Connects to the external inductor and catch diode; delivers up to 500 mA load current, switching at 500 kHz.
EP	EP	power_in	Exposed thermal pad on the underside of the HSOP-8 (PowerPAD) package. Must be connected to the PCB ground plane for proper electrical grounding and thermal dissipation.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-8-EP
Category	PMIC
Pins	9

Ordering variants

Same part, different packaging or reel option.

LM22674MRX-ADJ

CAD (KiCad official)

Symbol: LM22674MRX-ADJ
Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm
3D model: SOIC-8-EP (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lm22674mrx-adj.step`	125 KB	You want the bare part, or you mark your own boards.
`lm22674mrx-adj-etched.step`	2.2 MB	You want the part with `LM22674MRX-ADJ` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 579 faces against 152 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 (28 pp, sha256 a3ed9deda7205a2a, 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