LM22676MRX-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 input. Provides the gate drive voltage for the high-side N-channel MOSFET. Requires an external bootstrap capacitor tied between BOOT and SW; internal boot-strap diode charges it each cycle.
2	NC	unconnected	Not Connected. Not electrically connected inside the chip; pin does not function as a thermal conductor. May be left floating.
3	NC	unconnected	Not Connected. Not electrically connected inside the chip; pin does not function as a thermal conductor. May be left floating.
4	FB	input	Feedback input to the regulator error amplifier. In the ADJ version, tie a resistor divider from VOUT to FB to GND to set output voltage; VFB(typ) = 1.285 V. Absolute max -0.5 V to 7 V.
5	EN	input	Precision enable input. Used to control regulator start-up and shutdown; VEN threshold typ 1.6 V (falling), hysteresis ~0.6 V. Absolute max -0.5 V to 6 V; input current ~6 µA at 0 V.
6	GND	power_in	Ground input to regulator; system common. Should be tied to the exposed pad and the board ground plane.
7	VIN	power_in	Input supply to the regulator. Operating range 4.5 V to 42 V (abs max 43 V to GND). Bypass with a low-ESR ceramic capacitor placed close to the pin.
8	SW	power_out	Switching output of the regulator. Connects to the external inductor and catch diode of the buck power stage. SW to GND DC rating -5 V to VIN (transient -10 V for ≤50 ns).
EP	EP	power_in	Exposed thermal pad on the underside of the SO PowerPAD package. Must be connected to ground and to a copper pour on the PCB for thermal dissipation (θJA ≈ 60 °C/W with 1 sq inch of copper).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

LM22676MRX-ADJ
LM22676MRX-ADJTJ

CAD (KiCad official)

Symbol: LM22676MRX-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
`lm22676mrx-adj.step`	125 KB	You want the bare part, or you mark your own boards.
`lm22676mrx-adj-etched.step`	2.4 MB	You want the part with `LM22676MRX-ADJ` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 601 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 (27 pp, sha256 d53171b6eff70605, 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