RT9026GSP from Richtek Tech, in a SOP-8-EP. 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	GND	power_in	Ground. Shared with pin 9 (exposed pad). The exposed pad must be soldered to a large PCB ground for maximum power dissipation.
2	S3	input	Active-low Suspend-to-RAM mode control pin. When low, VTT is turned off and left High-Z while VTTREF remains active. Logic thresholds: VIH ≥ 1.6V, VIL ≤ 0.4V.
3	VTTSNS	input	VTT voltage sense input pin. Connect to the plus terminal of the VTT output capacitor for remote sensing of the VTT rail.
4	VTTREF	output	Buffered reference output equal to VDDQSNS/2 (e.g. 1.25/0.9/0.75/0.675/0.6 V). 10mA source/sink capability; ±20mV output tolerance; source current limit typ. 40mA.
5	VDDQSNS	input	VLDOIN (VDDQ) sense input pin. Divided internally by 2 to set the VTT and VTTREF target voltage. Input current typ. 50µA. Absolute max 3.6V.
6	VIN	power_in	Analog input pin to the control loop. Operating range 3.15V to 5.5V; absolute max 6V. UVLO rising threshold ≤ 2.7V with 0.2V hysteresis.
7	VLDOIN	power_in	Power supply of the VTT and VTTREF output stage (to power the internal MOSFETs). Operating range 1.2V to 3.3V; absolute max 3.6V.
8	VTT	power_out	Output voltage for connection to termination resistors, regulated to VDDQSNS/2. Sink/source up to 3A; ±20mV tolerance under load.
9	GND	power_in	Exposed thermal pad. Must be soldered to a large PCB ground plane for maximum power dissipation; electrically tied to pin 1 GND.

Key specifications

Parameter	Value
Manufacturer	Richtek Tech
Package	SOP-8-EP
Category	PMIC
Pins	9

Ordering variants

Same part, different packaging or reel option.

RT9026GSPPSP
RT9026GSP
RT9026GSPPFP
RT9026GSPGFP
RT9026GSPPQW
RT9026GSPGQW

CAD (KiCad official)

Symbol: RT9026GSP
Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm
3D model: SOP-8-EP (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`rt9026gsp.step`	125 KB	You want the bare part, or you mark your own boards.
`rt9026gsp-etched.step`	2.3 MB	You want the part with `RT9026GSP` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 555 faces against 152 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: Richtek Tech datasheet (14 pp, sha256 c00b245be9492010, retrieved 2026-08-17, tier: manufacturer)
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