XL7015E1 from XLSEMI, in a TO-252-5. 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	VIN	power_in	Power supply input pin, 5V to 80V operating range (100V absolute max). Requires an electrolytic bypass capacitor (e.g. 33uF/100V) between VIN and GND to suppress noise.
2	SW	output	Power switch output pin; switching node connected to the internal high-voltage NPN power transistor. Connects to the external inductor and freewheeling diode of the buck converter.
3	GND	power_in	Ground pin. The exposed metal tab of the TO252-5L package is also GND and should be tied to the ground plane for thermal dissipation.
4	FB	input	Feedback input pin. Senses the output voltage via an external resistor divider; internal reference is 1.25V. VOUT = 1.25 * (1 + R2/R1). Absolute max voltage -0.3V to 7V.
5	EN	input	Enable pin, active-low logic: LOW (<0.8V) enables the converter, HIGH (>1.6V) shuts it down. Floating is treated as low (enabled). Absolute max voltage -0.3V to 7V.
TAB	GND	power_in	Exposed metal tab on the back of the TO252-5L package, electrically connected to GND. Used for thermal dissipation; solder to the PCB ground plane.

Key specifications

Parameter	Value
Manufacturer	XLSEMI
Package	TO-252-5
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

XL7015E1

CAD (KiCad official)

Symbol: XL7015E1
Footprint: Package_TO_SOT_SMD:TO-252-5_TabPin6
3D model: TO-252-5 (KiCad packages3D, STEP)

Provenance

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

Datasheet: XLSEMI datasheet (10 pp, sha256 113bfcda29206233, retrieved 2026-08-17, tier: manufacturer)
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