component

RT8279GSP

Public Made by Adom

by adom

Richtek Tech DC-DC Converters, SOP-8-EP-150mil. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs rt8279gsp: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
pads.json footprint: the shipped SOIC-8 has no thermal pad, but the symbol and the datasheet both show 9 pads. datasheet EP 2.15x2.15mm; matches the land already resolved for sibling rt8289gsp from its own datasheet. Chosen from this part's OWN datasheet, not inferred from a sibling - the Richtek SOP-8-EP parts alone carry three different exposed-pad sizes, so family inference would have been wrong. Rebuilds the .lbr, re-derives pin 1 and pads.json. · Ray 1mo ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 11d ago
README.md rt8279gsp: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 17d ago
rt8279gsp-etched.fit.json rt8279gsp: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
rt8279gsp-etched.glb rt8279gsp: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
rt8279gsp-etched.step rt8279gsp: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
rt8279gsp.glb 3D: replace the model to match the corrected SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm footprint. The page shipped the plain SOIC-8 body, not the exposed-pad land, which no longer depicted the part after the footprint was fixed from its datasheet. Model is the exact one the new footprint references in the KiCad official library (CC-BY-SA 4.0), the same provenance page.json already records; .glb regenerated from it via service-step2glb. · Ray 1mo ago
rt8279gsp.kicad_mod footprint: the shipped SOIC-8 has no thermal pad, but the symbol and the datasheet both show 9 pads. datasheet EP 2.15x2.15mm; matches the land already resolved for sibling rt8289gsp from its own datasheet. Chosen from this part's OWN datasheet, not inferred from a sibling - the Richtek SOP-8-EP parts alone carry three different exposed-pad sizes, so family inference would have been wrong. Rebuilds the .lbr, re-derives pin 1 and pads.json. · Ray 1mo ago
rt8279gsp.kicad_sym Publish 0.1.0 · Ray 1mo ago
rt8279gsp.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect and oval pad as a SQUARE EAGLE smd; this carries the real pad shape across (0 -> 8 rounded pads) and stops dropping geometry drawn on KiCad User.N layers. Attributes, connects, pads and the pin-1 marker are gated against decreasing and are unchanged. · Ray 1mo ago
rt8279gsp.step 3D: replace the model to match the corrected SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm footprint. The page shipped the plain SOIC-8 body, not the exposed-pad land, which no longer depicted the part after the footprint was fixed from its datasheet. Model is the exact one the new footprint references in the KiCad official library (CC-BY-SA 4.0), the same provenance page.json already records; .glb regenerated from it via service-step2glb. · Ray 1mo ago

RT8279GSP

Richtek Tech · DC-DC Converters · SOP-8-EP-150mil

RT8279GSP from Richtek Tech, in a SOP-8-EP-150mil. 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 BOOT power_in High Side Gate Drive Boost Input. Supplies drive for the high-side N-MOSFET switch. Connect a 10nF (or greater) capacitor from SW to BOOT to power the high side switch. Absolute max (VSW-0.3V) to (VSW+6V).
2 NC unconnected No Internal Connection.
3 NC unconnected No Internal Connection.
4 FB input Feedback Input. Connect to a resistor divider from VOUT to set the output voltage. Feedback threshold is 1.222V (typ, VREF).
5 EN input Enable Input. Digital input that turns the regulator on/off. VIH > 1.4V turns the regulator on; VIL < 0.4V turns it off. Leave floating for automatic startup (has ~1µA internal pull-up). Absolute max 6V.
6 GND power_in Ground. Pins 6 and 9 (exposed pad) are the device ground. The exposed pad must be soldered to a large PCB copper area connected to GND for maximum power dissipation.
7 VIN power_in Power Input, 5.5V to 36V operating range (absolute max 40V). Bypass with a suitable large capacitor from VIN to GND to eliminate input noise.
8 SW power_out Power Switching Output. Connect to the inductor and to the BOOT bootstrap capacitor (a capacitor from SW to BOOT is required to power the high side switch). Absolute max -0.3V to VIN+0.3V.
9 GND power_in Exposed thermal pad. Electrically connected to GND (pin 6). Must be soldered to a large PCB copper area for thermal dissipation.

Key specifications

Parameter Value
Manufacturer Richtek Tech
Package SOP-8-EP-150mil
Category PMIC
Pins 9

Ordering variants

Same part, different packaging or reel option.

  • RT8279GSP

CAD (KiCad official)

  • Symbol: RT8279GSP
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOP-8-EP-150mil (KiCad packages3D, STEP)
  • 3D model files: rt8279gsp-etched.step / rt8279gsp-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rt8279gsp.step / rt8279gsp.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
rt8279gsp.step 125 KB You want the bare part, or you mark your own boards.
rt8279gsp-etched.step 2.2 MB You want the part with RT8279GSP already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 532 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 d5cade8157c32c80, 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