LM2674MX-ADJ from Texas Instruments, in a SOIC-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	CB	input	Bootstrap capacitor connection for the high-side driver. Connect a high-quality 10-nF (typ 470-nF per pin-function table) ceramic capacitor from CB to VSW to develop the boosted gate drive for the internal high-side DMOS switch.
2	NC	unconnected	No connect. Leave floating or tie to ground plane per layout guidance; not internally bonded.
3	NC	unconnected	No connect. Leave floating or tie to ground plane per layout guidance; not internally bonded.
4	FB	input	Feedback sense input for the internal error amplifier. On the ADJ version, connect to the midpoint of an external resistor divider from VOUT to GND to program the output voltage (VFB = 1.21 V nominal). Absolute-max rating -0.3 V to 14 V.
5	ON/OFF	input	Active-low TTL-compatible enable input. HIGH or floating = regulator ON; LOW = OFF with ~50-µA standby current. Absolute-max VSH range -0.1 V to 6 V.
6	GND	power_in	Power ground return. Connect directly to the system ground plane with the ground returns of CIN and COUT kept as short as possible for good switching-node bypass.
7	VIN	power_in	Supply input to the drain (collector) of the internal high-side DMOS switch. Operating range 6.5 V to 40 V (absolute-max 45 V). Requires a low-ESR bypass capacitor (e.g. 100 µF) placed close to VIN and GND.
8	VSW	output	Switching-node output; source of the internal high-side DMOS FET. Connects to the external inductor and the cathode of the catch (Schottky) diode. Rated to swing to -1 V below ground during freewheel.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

LM2674MX-ADJM
LM2674MX-ADJ
LM2674MX-ADJN
LM2674MX-ADJNHN

CAD (KiCad official)

Symbol: LM2674MX-ADJ
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lm2674mx-adj.step`	122 KB	You want the bare part, or you mark your own boards.
`lm2674mx-adj-etched.step`	1.8 MB	You want the part with `LM2674MX-ADJ` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 479 faces against 147 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 (38 pp, sha256 6899e1e558e13f56, 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