JW5026SOTB#TRPBF from JoulWatt Tech, 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	BST	passive	Bootstrap pin for the top switch driver. Connect a 0.1uF (or larger) ceramic capacitor between BST and SW to supply gate-drive voltage to the internal top N-channel MOSFET. Absolute maximum: SW-0.3V to SW+5V.
2	GND	power_in	Device ground return. Connect to the system ground plane with a low-impedance path; place the input decoupling capacitor close to VIN/GND to minimize loop area.
3	FB	input	Output feedback pin. FB senses the divided output voltage and is regulated by the internal error amplifier to the 800mV (typ) reference. Connect a resistive divider from Vout to FB to GND to set the output voltage. Absolute maximum: -0.3V to 6V.
4	EN	input	Enable input. Drive EN high (>1.3V typ) to turn on the regulator; drive low (<0.3V) to shut down. Can be tied to VIN through a resistive divider to implement programmable input UVLO. Absolute maximum: -0.3V to 44V.
5	VIN	power_in	Input supply pin, 4.7V to 40V. Powers the IC and the internal top power switch. Bypass VIN to GND with a low-ESR ceramic capacitor (typ 4.7uF X5R/X7R) placed close to the pin.
6	SW	output	Switching node. Internal top and bottom N-channel MOSFETs (RDS(on) ~500m/220m ohm) connect here. Attach the external inductor from SW to the output and the BST capacitor from SW to BST. Absolute maximum: -0.3V to 44V.

Key specifications

Parameter	Value
Manufacturer	JoulWatt Tech
Package	SOT-23-6
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

JW5026SOTB#PBF
JW5026SOTB#TRPBF

CAD (KiCad official)

Symbol: JW5026SOTB#TRPBF
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

Provenance

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

Datasheet: JoulWatt Tech datasheet (11 pp, sha256 c75944daefa427c7, 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