RY3825 from RYCHIP, in a SOT-23-6. 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 return for the device. Connect to a large copper area for thermal dissipation and to minimize the power loop with the input capacitor and internal MOSFETs.
2	SW	output	Switching node output; the common drain of the internal high-side and low-side power MOSFETs. Connect to the external inductor. Rated -0.3V to (VIN+0.5V).
3	IN	power_in	Power supply input, 4V to 18V (absolute max 21V). Bypass with a ceramic input capacitor placed close to the pin.
4	FB	input	Feedback input for the adjustable output. Connect to the center tap of an external resistor divider from VOUT to GND. Regulated to 0.768V typical (0.749V to 0.787V over temperature). Absolute max -0.3V to 6V.
5	EN	input	Enable input. Drive logic-high (rising threshold typ 1.15V) to enable the IC; drive logic-low to enter micro-power shutdown (typ 10µA). Absolute max -0.3V to 21V.
6	BS	passive	Bootstrap pin for the high-side gate driver. Connect a bootstrap capacitor between SW and BS to form the floating supply that drives the high-side MOSFET. Rated (VSW-0.3V) to (VSW+5V).

Key specifications

Parameter	Value
Manufacturer	RYCHIP
Package	SOT-23-6
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

RY3825

CAD (KiCad official)

Symbol: RY3825
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ry3825.step`	97 KB	You want the bare part, or you mark your own boards.
`ry3825-etched.step`	1.7 MB	You want the part with `RY3825` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 393 faces against 117 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 578aea52c47ad414, 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