RY3415 from RYCHIP, in a SOT-23-5. 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	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 (<1µA in shutdown). Must not be left floating. Absolute max 6.0V.
2	GND	power_in	Device ground return. Should be tied to a large copper pour for thermal dissipation (θJA 170°C/W, θJC 130°C/W) and to minimize the switching-loop area with the input capacitor.
3	SW	output	Switch node. Connects to the drains of the internal P-channel and N-channel power MOSFETs (RDS(on) 0.3Ω PMOS, 0.2Ω NMOS) and to the external inductor. Peak SW current rating 3A; absolute max -0.3V to (VIN+0.3V).
4	IN	power_in	Power supply input, 2.5V to 5.5V operating (absolute max 6.0V, UVLO ~2.4V). Must be decoupled to GND with a 10µF or greater ceramic capacitor placed close to the pin.
5	FB	input	Feedback input for the error amplifier. External resistor divider from VOUT sets the regulated output via VOUT = VFB × (R1+R2)/R2, where VFB = 0.600V (±2%). Absolute max 6.0V.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

RY341570301002

CAD (KiCad official)

Symbol: RY3415
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: RYCHIP datasheet (9 pp, sha256 b19aebf1da77b40b, 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