LP3350SOF from LOWPOWER, in a SOP-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	VIN	power_in	Input supply pin. Operating range 8V to 28V (absolute max 36V). Decouple with a 10uF ceramic capacitor placed close to the pin.
2	GATE	output	Gate drive output for the external boost NMOS power switch. Source current 30uA typ, sink current 60uA typ.
3	GND	power_in	Device ground reference. Tie to the system ground plane.
4	CS	input	Current sense input for the boost switch cycle-by-cycle current limit. Over-current protection threshold is 330mV typ (referenced to GND across the source-sense resistor).
5	FB	input	Regulator feedback input. Sensed against a 300mV (295.5-304.5mV) internal reference; connect an external current-sense resistor RFB from FB to GND to set LED current per ILED = 0.3V / RFB.
6	COMP	passive	Error-amplifier compensation node. Connect an external RC network (typ Rcomp=47kOhm series with Ccomp=33nF to GND) to set loop bandwidth and stability. EA transconductance 100uA/V typ.
7	OVP	input	Over-voltage protection sense input. Connect an external resistive divider from the boost output (V+) to GND; OVP trips at 2V typ (1.8-2.2V) and latches off until VIN is restarted or CTRL is toggled.
8	CTRL	input	Enable and external PWM dimming control. Logic-high threshold 2.6V (max), logic-low 1V (min). Accepts an external PWM dimming signal 100Hz-1kHz with 1%-100% duty cycle. Internal 150kOhm pull-down.

Key specifications

Parameter	Value
Manufacturer	LOWPOWER
Package	SOP-8
Category	LED-drv
Pins	8

Ordering variants

Same part, different packaging or reel option.

LP3350SOF

CAD (KiCad official)

Symbol: LP3350SOF
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lp3350sof.step`	122 KB	You want the bare part, or you mark your own boards.
`lp3350sof-etched.step`	2.2 MB	You want the part with `LP3350SOF` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 524 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: LOWPOWER datasheet (7 pp, sha256 6b1d938d9f48e0bd, retrieved 2026-08-17, tier: lcsc)
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