component
XL2576S-12E1
Public Unreviewedby Ray
XLSEMI DC-DC Converters, TO-263-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownXL2576S-12E1
XLSEMI · DC-DC Converters · TO-263-5
XL2576S-12E1 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. 470uF/35V CIN + 1uF ceramic) to eliminate noise on the input. |
| 2 | SW | power_out | Power switch output pin. Switch node connected to the emitter of the internal NPN power transistor; drives the external inductor and Schottky catch diode. VSW absolute max is -0.3V to VIN. |
| 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 return path to prevent switching current spikes from inducing voltage noise into the device. The exposed metal tab is also GND. |
| 4 | FB | input | Feedback pin. Senses the output voltage via an external resistor divider and regulates it against the internal 1.23V reference. On the fixed 12V version (XL2576-12) the internal divider is set with R1=2.5k and R2=21.8k. FB absolute max is -0.3V to VIN. |
| 5 | EN | input | Enable pin, TTL-compatible with hysteresis. Drive EN low to turn on the device; drive it high to turn it off (shutdown). Floating defaults to low (device enabled). EN absolute max is -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-ADJE1XL2576S-5.0E1XL2576S-12E1XL2576T-ADJE1XL2576T-5.0E1
CAD (KiCad official)
- Symbol:
XL2576S-12E1 - 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 |
|---|---|---|
xl2576s-12e1.step |
180 KB | You want the bare part, or you mark your own boards. |
xl2576s-12e1-etched.step |
2.0 MB | You want the part with XL2576S-12E1 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 544 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).