component
XL2576S-5.0E1
Public Made by Adomby adom
XLSEMI XL2576S 5 0E1 DC-DC Converters, TO-263-5. Pinout extracted from the datasheet, 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-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-5.0E1XL2576S-5.0E1S-ADJE1XL2576S-5.0E1S-12E1XL2576S-5.0E1T-5.0E1XL2576S-5.0E1T-ADJE1
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output Voltage | VOUT | 4.8 | 5 | 5.2 | V | Vin = 7V to 40V, Iload=0.2A to 3A | 6 |
| Input operation voltage | Vin | 4.5 | 40 | V | 7 | ||
| Shutdown Supply Current | IS | 80 | 200 | uA | VEN=5V | 7 | |
| Quiescent Supply Current | Iq | 2 | 10 | mA | VEN =0V, VFB =Vin | 7 | |
| Oscillator Frequency | Fosc | 40 | 52 | 64 | Khz | 7 | |
| Switch Current Limit | IL | 3.6 | 4.8 | 6.9 | A | VFB =0V | 7 |
| EN Pin Threshold High (Regulator OFF) | VEN | 1.4 | V | 7 | |||
| EN Pin Threshold Low (Regulator ON) | VEN | 0.8 | V | 7 | |||
| EN Pin Input Leakage Current (OFF) | IH | 5 | 15 | uA | VEN =2.5V (OFF) | 7 | |
| EN Pin Input Leakage Current (ON) | IL | 0.2 | 5 | uA | VEN =0.5V (ON) | 7 | |
| Output Saturation Voltage | VCE | 1.3 | 1.5 | V | VFB=0V, Iout=3A | 7 | |
| Max Duty Cycle | DMAX | 100 | % | VFB=0V | 7 | ||
| Input Voltage | Vin | -0.3 | 45 | V | 5 | ||
| Feedback Pin Voltage | VFB | -0.3 | V | 5 | |||
| EN Pin Voltage | VEN | -0.3 | V | 5 | |||
| Output Switch Pin Voltage | VSW | -0.3 | V | 5 | |||
| Operating Junction Temperature | TJ | -40 | 125 | oC | 5 | ||
| Storage Temperature | TSTG | -65 | 150 | oC | 5 | ||
| Lead Temperature (Soldering) | TLEAD | 260 | oC | Soldering, 10 sec | 5 | ||
| Thermal Resistance (Junction to Ambient) | RJA | 30 | oC /W | No Heatsink, Free Air | 5 |
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xl2576s-5-0e1.step/xl2576s-5-0e1.glbare 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).