XL1507-5.0E1 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	Supply Voltage Input Pin. Operates from a 4.5V to 40V DC voltage (absolute max 45V). Bypass VIN to GND with a suitably large capacitor to eliminate noise on the input.
2	OUTPUT	output	Power Switch Output Pin (SW). Output is the internal power transistor switch node that supplies power to the output through the external inductor and Schottky freewheeling diode. Rated for 3A continuous.
3	GND	power_in	Ground Pin. Care must be taken in layout: this pin should be placed outside of the Schottky diode to output capacitor ground path to prevent switching current spikes from inducing voltage noise into the XL1507. The exposed metal tab is also tied to GND.
4	FEEDBACK	input	Feedback Pin (FB). Senses the output voltage via an external resistor divider and regulates it. Internal feedback threshold voltage is 1.23V. On the -5.0 fixed version an internal divider (R1=2.5k, R2=7.6k) sets the 5V output.
5	ON/OFF	input	Enable Pin. Drive ON/OFF pin LOW to turn on the device; drive it HIGH to turn it off. TTL-compatible with hysteresis. Floating defaults low (device ON). Absolute max voltage is VIN.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

XL1507-5.0E1

CAD (KiCad official)

Symbol: XL1507-5.0E1
Footprint: Package_TO_SOT_SMD:TO-252-5_TabPin6
3D model: TO-252-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`xl1507-5-0e1.step`	196 KB	You want the bare part, or you mark your own boards.
`xl1507-5-0e1-etched.step`	1.9 MB	You want the part with `XL1507-5.0E1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 508 faces against 139 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 (12 pp, sha256 7b23fa3d2ebf161b, 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