component

RY3420

Public Made by Adom

by adom

RYCHIP DC-DC Converters, SOT-23-5. 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 ry3420: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json ry3420: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md ry3420: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray
ry3420-etched.fit.json ry3420: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ry3420-etched.glb ry3420: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ry3420-etched.step ry3420: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ry3420.glb Publish 0.1.0 · Ray
ry3420.kicad_mod Publish 0.1.0 · Ray
ry3420.kicad_sym Publish 0.1.0 · Ray
ry3420.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
ry3420.step Publish 0.1.0 · Ray

RY3420

RYCHIP · DC-DC Converters · SOT-23-5

RY3420 from RYCHIP, in a SOT-23-5. Pinout and pin descriptions extracted from the datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 EN input Chip Enable. Drive above 1.5V (typ 1.15V rising threshold, 140mV hysteresis) to turn the regulator on; drive below 0.3V to shut it down. Must not be left floating.
2 GND power_in Ground return for the device. Should be tied to a large copper pour for thermal dissipation.
3 SW power_out Switch node output. Connected to the drains of the internal P-ch and N-ch power MOSFETs and drives the external inductor. Rated for 3A peak sink/source current.
4 IN power_in Power supply input, 2.5V to 5.5V operating range (6.0V absolute max). Must be closely decoupled to GND with a 10µF or greater ceramic capacitor.
5 FB input Output voltage feedback input. Connect to the midpoint of an external resistor divider from VOUT to GND; regulates to the internal 0.600V reference (VOUT = 0.6V × (R1+R2)/R2).

Key specifications

Parameter Value
Manufacturer RYCHIP
Package SOT-23-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • RY3420ADYLL

CAD (KiCad official)

  • Symbol: RY3420
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: ry3420-etched.step / ry3420-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ry3420.step / ry3420.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ry3420.step 85 KB You want the bare part, or you mark your own boards.
ry3420-etched.step 1.4 MB You want the part with RY3420 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 350 faces against 102 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: RYCHIP datasheet (9 pp, sha256 e2817c95aff7799d, retrieved 2026-08-17, tier: lcsc)
  • 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