LM2576HVS-ADJ 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	Unregulated input supply voltage. Operating range 4.5V to 60V for the HV version (absolute max 63V). Bypass to GND with a low-ESR input capacitor (CIN) close to the pin.
2	Output	output	Switching output pin from the internal 3A NPN switch. Connects to the external catch diode (e.g. 1N5822) and to the LC filter (typ. 100µH inductor, 1000µF output capacitor) that produces the regulated DC output.
3	GND	power_in	Ground reference for the device. Tie directly to the ground plane; input and output capacitor return currents should meet here with minimum trace length.
4	Feedback	input	Output-voltage feedback to the internal error amplifier (1.23V bandgap reference). For the ADJ version, connect an external resistor divider (R1=1.0k typical, R2 chosen for target VOUT: VOUT = 1.23V × (1 + R2/R1)) from VOUT to this pin and to GND.
5	ON/OFF	input	TTL-compatible active-low shutdown input. Regulator is enabled when this pin is low or left floating; pulling it high (up to VIN, absolute range -0.3V ≤ V ≤ +VIN) forces the device into low-power standby (~50µA typical).

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

LM2576HVS-ADJS
LM2576HVS-ADJT
LM2576HVS-ADJTB

CAD (KiCad official)

Symbol: LM2576HVS-ADJ
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
`lm2576hvs-adj.step`	180 KB	You want the bare part, or you mark your own boards.
`lm2576hvs-adj-etched.step`	2.0 MB	You want the part with `LM2576HVS-ADJ` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 552 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 (18 pp, sha256 10275fb18a78ad8b, 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