GN34063A from GN Semic, 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	SC	output	Switch transistor collector (Q1 output stage collector). Connects to the inductor/diode node of the DC-DC converter power stage. Rated up to 32V, switching current up to 1.2A.
2	SE	output	Switch transistor emitter (Q1 output stage emitter). Ties to ground return or to the current-sense/inductor node depending on the topology (boost/buck/inverting). Rated up to 32V.
3	CT	passive	Timing capacitor pin for the internal oscillator. An external capacitor from CT to GND sets the switching frequency (typ. 33 kHz at CT=1.0nF, up to ~100 kHz).
4	GND	power_in	Device ground reference for the internal control circuitry and the 1.25V reference.
5	FB	input	Comparator inverting input (feedback). Connect to the output resistor divider; the internal comparator regulates so that FB matches the 1.25V (±2%) internal reference. Input voltage range -0.3V to 30V; input bias current typ. -40nA.
6	VCC	power_in	Input supply voltage. Operating range 3.0V to 32V. Quiescent current typ. 2.5 mA (max 4.0 mA) at VCC=5.0V.
7	Ipk	input	Peak-current sense input. An external sense resistor between VCC and this pin sets the switch peak current; when the drop across Rsc reaches ~300 mV (VIPK, typ.), the oscillator terminates the on-time to limit switch current.
8	DC	power_in	Driver transistor (Q2) collector. Typically tied to VCC (directly or via a resistor to VCC in Darlington-drive configurations) to supply base drive to the output switch. Rated up to 32V, driver collector current up to 100 mA.

Key specifications

Parameter	Value
Manufacturer	GN Semic
Package	SOP-8
Category	PMIC
Pins	8

CAD (KiCad official)

Symbol: GN34063A
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
`gn34063a.step`	122 KB	You want the bare part, or you mark your own boards.
`gn34063a-etched.step`	2.0 MB	You want the part with `GN34063A` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 490 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: GN Semic datasheet (8 pp, sha256 439f079d89cb800c, 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