component

RY9128D

Public Made by Adom

by adom

RYCHIP DC-DC Converters, SOT-563. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpmicry9128d
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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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RY9128D

RYCHIP · DC-DC Converters · SOT-563

RY9128D from RYCHIP, in a SOT-563. 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 IN power_in Power supply input pin. Operating input voltage range 4.5V to 17V (absolute max 18V). Bypass with a ceramic capacitor (typ. 22µF plus 0.1µF) placed as close to the pin as possible.
2 SW output Switching node. Connects to the drain of the internal high-side MOSFET and source of the internal low-side MOSFET. Connect to the external inductor. Absolute max -0.3V to VIN+1V (-5V to VIN+2V for 10ns transient).
3 GND power_in Ground pin. Return for internal circuitry and power stage. Should be connected to a large copper pour for thermal dissipation.
4 BS passive Bootstrap pin for the high-side gate driver floating supply. A bootstrap capacitor (typ. 10nF) is required between SW and BS to form a floating supply across the high-side switch driver. Absolute max VSW+5V.
5 EN input Enable input. Drive high (>1.26V rising threshold) to enable the IC; drive low (<0.8V falling threshold) to disable and enter micro-power shutdown mode (shutdown current typ. <4µA). Absolute max 18V.
6 FB input Feedback input for the adjustable output. Connect to the center point of the external resistor divider from VOUT to GND. Regulates to VFB = 0.6V (typ., 0.588V to 0.612V). Absolute max 6V.

Key specifications

Parameter Value
Manufacturer RYCHIP
Package SOT-563
Category PMIC
Pins 6

Ordering variants

Same part, different packaging or reel option.

  • RY9128D

CAD (KiCad official)

  • Symbol: RY9128D
  • Footprint: Package_TO_SOT_SMD:SOT-563
  • 3D model: SOT-563 (KiCad packages3D, STEP)
  • 3D model files: ry9128d-etched.step / ry9128d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ry9128d.step / ry9128d.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ry9128d.step 448 KB You want the bare part, or you mark your own boards.
ry9128d-etched.step 1.7 MB You want the part with RY9128D 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 54 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 (13 pp, sha256 12dce6adc87546f7, 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