LM3485MMX from Texas Instruments, in a VSSOP-8-0.65mm. 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	ISENSE	input	Current sense input pin. Connects to the drain node of the external PFET so that RDS(on) sensing can be compared against the ADJ threshold for cycle-by-cycle current limiting.
2	GND	power_in	Signal ground reference for the controller.
3	NC	unconnected	No internal connection.
4	FB	input	Feedback input. Connect to a resistor divider between the regulated output and GND to program the output voltage; internal reference is 1.242 V (typical).
5	ADJ	input	Current-limit threshold adjustment. Sources ~5.5 µA from an internal current source through an external resistor to VIN; the resulting voltage sets the RDS(on)-based over-current trip level compared with the PFET VDS.
6	PWR GND	power_in	Power ground for the gate driver return current.
7	PGATE	output	Gate drive output for the external P-channel MOSFET. Output swings between VIN and (VIN − 5 V); source/sink driver resistance ~5.5 Ω / 8.5 Ω.
8	VIN	power_in	Power supply input pin. Operating range 4.5 V to 35 V.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	VSSOP-8-0.65mm
Category	PMIC
Pins	8

Ordering variants

Same part, different packaging or reel option.

LM3485MMX

CAD (KiCad official)

Symbol: LM3485MMX
Footprint: Package_SO:VSSOP-8_2.3x2mm_P0.5mm
3D model: VSSOP-8-0.65mm (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lm3485mmx.step`	122 KB	You want the bare part, or you mark your own boards.
`lm3485mmx-etched.step`	1.8 MB	You want the part with `LM3485MMX` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 469 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 (28 pp, sha256 6637528b55f3e979, 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