SM7035P from Shenzhen Sunmoon Micro, 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	DRAIN	power_out	Drain of the internal high-voltage power MOSFET (BV_DRAIN = 500V, Rdson ≈ 20Ω). Also supplies VDD via internal JFET/startup circuit charging the VDD cap.
2	NC	unconnected	No connect (floating pin). Leave open.
3	FB	input	Feedback input for constant-voltage control. Compared against VFB_CV ≈ 2V threshold; frequency-hopping regulator sets Vout via RFBL/(RFBL+RFBH) = VFB_CV/Vout. Abs max -0.3 to 7V.
4	VDD	power_in	Chip supply rail, typically 6.0V (abs max -0.3 to 7V). Bypassed with a local cap; charged from DRAIN via internal startup/regulator. IDD ≈ 450µA.
5	NC	unconnected	No connect (floating pin). Leave open.
6	NC	unconnected	No connect (floating pin). Leave open.
7	GND	power_in	Chip ground. Tie to pin 8; recommend ≥8×8mm copper pour on pins 7/8 for thermal dissipation.
8	GND	power_in	Chip ground. Tie to pin 7; recommend ≥8×8mm copper pour on pins 7/8 for thermal dissipation.

Key specifications

Parameter	Value
Manufacturer	Shenzhen Sunmoon Micro
Package	SOIC-8
Category	PMIC
Pins	8

Ordering variants

Same part, different packaging or reel option.

SM7035P

CAD (KiCad official)

Symbol: SM7035P
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
`sm7035p.step`	122 KB	You want the bare part, or you mark your own boards.
`sm7035p-etched.step`	1.8 MB	You want the part with `SM7035P` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 435 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: Shenzhen Sunmoon Micro datasheet (8 pp, sha256 c7718abe11a881a2, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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