LM2675MX-5.0 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	passive	Boot-strap capacitor connection for the high-side driver. Connect a high-quality 470-nF capacitor from CB to the VSW pin to develop the boosted gate-drive supply.
2	NC	unconnected	No connect pin. Leave floating; do not use as a tie point.
3	NC	unconnected	No connect pin. Leave floating; do not use as a tie point.
4	FB	input	Feedback sense input pin. For the fixed 5-V version, connect this pin directly to the output capacitor (VOUT). Absolute-maximum feedback pin voltage is -0.3 V to 14 V.
5	ON/OFF	input	TTL-compatible enable input to the voltage regulator. High = ON and low = OFF; pull high or float to enable the regulator. Input voltage range -0.1 V to 6 V.
6	GND	power_in	Power ground. Connect to system ground. Return for CIN and COUT; the path from CIN and GND must be as short as possible to minimize switching noise.
7	VIN	power_in	Supply input pin to the collector of the internal high-side FET. Connect to the input supply (8 V to 40 V recommended) and to the input bypass capacitor CIN; the path from VIN to the high-frequency bypass CIN and GND must be short. Absolute-maximum 45 V.
8	VSW	output	Source pin of the internal high-side FET; the switching node. Connect to the output inductor and the cathode of the external catch diode. Switch voltage to ground is rated down to -1 V (absolute maximum).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

LM2675MX-5.0
LM2675MX-5.0M
LM2675MX-5.0N
LM2675MX-5.0SD

CAD (KiCad official)

Symbol: LM2675MX-5.0
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
`lm2675mx-5-0.step`	122 KB	You want the bare part, or you mark your own boards.
`lm2675mx-5-0-etched.step`	2.1 MB	You want the part with `LM2675MX-5.0` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 518 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 (33 pp, sha256 324342d0eaad04c2, 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