KP1061NSPA 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	input	Constant-current loop compensation pin. Connect a 1-4.7uF ceramic capacitor from COMP to GND. Internal clamp voltages: Vcomp_H ≈ 3V, Vcomp_L ≈ 0.7V.
2	GND	power_in	Chip reference ground.
3	VDD	power_in	Chip supply pin. Recommend a ≥2.2uF ceramic capacitor from VDD to GND. Normal operating range 10-13V (typ 11.5V); UVLO ≈8V; clamp ≈14V at 5mA.
4	FB	input	Inductor-current demagnetization sense and output over-voltage protection pin. Demag threshold ≈0.2V; OVP threshold ≈2.0V. Absolute max -0.3 to 7V.
5	Drain	power_in	Drain of the internal 650V high-voltage power MOSFET (KP1061N: Rdson≈9.5Ω). Also feeds the internal HV startup / VDD charging circuit (IHV≈10mA at Drain=20V). Tied to pin 6 internally.
6	Drain	power_in	Drain of the internal 650V high-voltage power MOSFET (paralleled with pin 5) for heat dissipation and current handling. Also serves as the HV startup input.
7	CS	input	Current-sense input. Connect to source-side sense resistor. Peak-current reference Vcs_max ≈1.5V, constant-current reference Vcc_ref ≈200mV, with 300ns leading-edge blanking and 100ns OC detection delay.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

KP1061NSPA
KP1061NSPANDP

CAD (KiCad official)

Symbol: KP1061NSPA
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
`kp1061nspa.step`	111 KB	You want the bare part, or you mark your own boards.
`kp1061nspa-etched.step`	1.9 MB	You want the part with `KP1061NSPA` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 484 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 8e7db12523a38278, 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