KP1061SPA from Kiwi Instruments, in a SOP-7. 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	COMP	output	Constant-current loop compensation pin. Recommended to connect a 1-4.7uF ceramic capacitor to GND. Internally clamped between Vcomp_L=0.7V and Vcomp_H=3V.
2	GND	power_in	Chip reference ground.
3	VDD	power_in	IC supply pin. Normal operating voltage 10-13V (typ 11.5V), UVLO at ~8V, internally clamped at 14V (I=5mA). Recommend a ceramic cap ≥2.2uF to GND.
4	FB	input	Inductor demagnetization detection and output over-voltage protection sense pin. Demag threshold ~0.2V, OVP threshold 2.0V (typ).
5	Drain	passive	Internal 650V power MOSFET drain input (also used for HV startup / IC supply charging, IHV≈10mA at Drain=20V). Rdson(KP1061)=10Ω typ. Pins 5 and 6 are internally connected.
6	Drain	passive	Internal 650V power MOSFET drain input (parallel with pin 5). Pins 5 and 6 are internally connected.
7	CS	input	Current sense input pin. Peak current reference Vcs(max)=1.5V typ, constant-current reference VCC_REF=200mV typ, leading-edge blanking 300ns.

Key specifications

Parameter	Value
Manufacturer	Kiwi Instruments
Package	SOP-7
Category	PMIC
Pins	7

Ordering variants

Same part, different packaging or reel option.

KP1061SPA
KP1061SPADP

CAD (KiCad official)

Symbol: KP1061SPA
Footprint: Package_SO:SOIC-8-N7_3.9x4.9mm_P1.27mm
3D model: SOP-7 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`kp1061spa.step`	111 KB	You want the bare part, or you mark your own boards.
`kp1061spa-etched.step`	1.8 MB	You want the part with `KP1061SPA` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 461 faces against 132 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: Kiwi Instruments datasheet (8 pp, sha256 59316d87fad441c1, 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