XL7056E1 from XLSEMI, in a TO-263-7. 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 pin. Reference for all internal circuitry.
2	FB	input	Feedback pin. Senses the output voltage through an external resistor divider network for regulation. Internal reference voltage is 1.25 V.
3	CSN	input	Current sense negative input. Connects to the low side of the external current-sense resistor for over-current/limit detection.
4	SW	output	Switch node output pin from the internal high-side power MOSFET. Connects to the external inductor and freewheeling Schottky diode. Also tied to the metal tab of the TO263-7L package.
5	CSP	input	Current sense positive input. Connects to the high side of the external current-sense resistor for output current limiting.
6	VC	passive	Internal voltage regulator bypass pin. Requires a 1 uF bypass capacitor between VC and VIN.
7	VIN	power_in	Power supply input pin. Accepts 8 V to 80 V DC input. A bypass capacitor between VIN and GND is required for noise suppression.

Key specifications

Parameter	Value
Manufacturer	XLSEMI
Package	TO-263-7
Category	PMIC
Pins	7

Ordering variants

Same part, different packaging or reel option.

XL7056E1

CAD (KiCad official)

Symbol: XL7056E1
Footprint: Package_TO_SOT_SMD:TO-263-7_TabPin8
3D model: TO-263-7 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`xl7056e1.step`	238 KB	You want the bare part, or you mark your own boards.
`xl7056e1-etched.step`	1.7 MB	You want the part with `XL7056E1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 487 faces against 179 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: XLSEMI datasheet (11 pp, sha256 fa827ef1aee9b233, 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