LM2575S-5.0 from UMW, in a TO-263-5. 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	Input supply voltage. Accepts 7V to 40V for the 5.0V fixed-output LM2575 (up to 60V for LM2575HV). Bypass locally with a 680 uF (or similar) low-ESR aluminum electrolytic to GND.
2	Output	output	Switching output from the internal 2A power switch. Connects to the external catch diode (e.g. 1N5824 Schottky) to GND and to the output inductor (typ. 33 uH) that feeds the load and output capacitor.
3	GND	power_in	Device ground reference. Also serves as the thermal path; on the TO-263 package this pin is fused to the tab/heat slug and should tie to a copper pour for heat sinking.
4	Feedback	input	Output voltage feedback sense input. For the fixed 5.0V version, connect directly to the regulated 5.0V output node (downstream of the inductor and output capacitor) so the internal reference regulates VOUT to 5V.
5	ON/OFF	input	Active-low TTL-compatible shutdown input. Pull low or leave floating for normal operation; drive high (up to VIN, absolute-max VIN, min -0.3V) to enter low-power standby mode (IQ typ. 50 uA).

Key specifications

Parameter	Value
Manufacturer	UMW
Package	TO-263-5
Category	PMIC
Pins	5

Ordering variants

Same part, different packaging or reel option.

LM2575S-5.0
LM2575HVS-5.0
LM2575T-5.0
LM2575HVT-5.0

CAD (KiCad official)

Symbol: LM2575S-5.0
Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
3D model: TO-263-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`lm2575s-5-0.step`	180 KB	You want the bare part, or you mark your own boards.
`lm2575s-5-0-etched.step`	2.0 MB	You want the part with `LM2575S-5.0` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 529 faces against 135 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: UMW datasheet (30 pp, sha256 b0c31af439f0b6b9, 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