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XL2576S-5.0E1

Public Made by Adom

by adom

XLSEMI XL2576S 5 0E1 DC-DC Converters, TO-263-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs xl2576s-5-0e1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
pads.json add symbol pin "6" for the exposed thermal pad: the footprint carries the pad and the symbol had none, so it reached no net (vendor string 'TO-263-5' states 5 pins and the footprint has exactly one more pad, so it is the tab) · Ray 1mo ago
page.json xl2576s-5-0e1: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1d ago
README.md xl2576s-5-0e1: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 16d ago
xl2576s-5-0e1-etched.fit.json xl2576s-5-0e1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
xl2576s-5-0e1-etched.glb xl2576s-5-0e1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
xl2576s-5-0e1-etched.step xl2576s-5-0e1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
xl2576s-5-0e1.glb fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray 1mo ago
xl2576s-5-0e1.kicad_mod fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray 1mo ago
xl2576s-5-0e1.kicad_sym add symbol pin "6" for the exposed thermal pad: the footprint carries the pad and the symbol had none, so it reached no net (vendor string 'TO-263-5' states 5 pins and the footprint has exactly one more pad, so it is the tab) · Ray 1mo ago
xl2576s-5-0e1.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect and oval pad as a SQUARE EAGLE smd; this carries the real pad shape across (0 -> 6 rounded pads) and stops dropping geometry drawn on KiCad User.N layers. Attributes, connects, pads and the pin-1 marker are gated against decreasing and are unchanged. · Ray 1mo ago
xl2576s-5-0e1.step fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray 1mo ago

XL2576S-5.0E1

XLSEMI · DC-DC Converters · TO-263-5

XL2576S-5.0E1 from XLSEMI, 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 Supply Voltage Input Pin. Operates from 4.5V to 40V DC. Bypass VIN to GND with a suitably large capacitor (e.g. 100uF/50V) to eliminate input switching noise.
2 SW power_out Power Switch Output Pin. Switch node driven by the internal NPN power transistor (Vsat ~1.3V at 3A). Connects to the external inductor and freewheeling Schottky diode (e.g. 1N5820). Absolute max -0.3V to Vin.
3 GND power_in Ground Pin. Care must be taken in layout: route outside of the Schottky-diode-to-output-capacitor ground path to prevent switching current spikes from inducing voltage noise into the XL2576. Metal tab is also GND.
4 FB input Feedback Pin. Senses the output voltage through an external resistor divider network and regulates it. The internal feedback threshold voltage is 1.23V. Absolute max -0.3V to Vin.
5 EN input Enable Pin with hysteresis. Drive EN low (<0.8V) to turn the regulator ON; drive high (>1.4V) to turn it OFF. Floating defaults low (regulator ON). Input leakage 5uA typ @ VEN=2.5V. Absolute max -0.3V to Vin.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • XL2576S-5.0E1
  • XL2576S-5.0E1S-ADJE1
  • XL2576S-5.0E1S-12E1
  • XL2576S-5.0E1T-5.0E1
  • XL2576S-5.0E1T-ADJE1

CAD (KiCad official)

  • Symbol: XL2576S-5.0E1
  • Footprint: Package_TO_SOT_SMD:TO-263-5_TabPin6
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: xl2576s-5-0e1-etched.step / xl2576s-5-0e1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); xl2576s-5-0e1.step / xl2576s-5-0e1.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
xl2576s-5-0e1.step 180 KB You want the bare part, or you mark your own boards.
xl2576s-5-0e1-etched.step 2.2 MB You want the part with XL2576S-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: 580 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: XLSEMI datasheet (15 pp, sha256 c3857bfcd9cf7c08, 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