LM2576S-5.0
National Semiconductor
Needs validationlow risk
Strong cross-vendor alternative with matching key parameters, package, and switching frequency.
Best Alternatives to LM2575S-5.0
The LM2575S-5.0 is a versatile 3A step-down (buck) voltage regulator, providing a fixed 5V output. As part of the popular LM257x family, it is widely used in applications requiring a simple, efficient DC-DC converter.
AI replacement insight
Electrical riskhigh
Candidates may have different switching frequencies or input voltage ranges.
Package risklow
Most alternatives use the same or compatible TO-263-5 package.
Sourcing risklow
The LM2576 family is multi-sourced, providing good availability.
Can it be replaced directly?
Direct replacement for LM2575S-5.0 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
For a robust upgrade, consider the LM2576HVR-5.0 for its higher 60V input rating. For a more direct cross, the LM2576S-5.0 from a major manufacturer is a strong choice.
Main risk
The primary risk when substituting is a mismatch in switching frequency or a more restrictive input voltage range, both of which can cause circuit failure.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | LM2575S-5.0 | LM2576S-5.0 | LM2576HVR-5.0 | XL2576S-5.0E1 | Compatibility / risk |
|---|---|---|---|---|---|
| Switching Frequency | 52 kHz | 52 kHz | 52 kHz | 52 kHz | 52 kHz / 150 kHz — Switching frequency matches, compatible with existing external components.; LM2576HVR-5.0: Switching frequency matches.; XL2576S-5.0E1: Switching frequency matches.; LM2596S-5.0: Requires redesign of external inductor and capacitors. |
| Current | 3.0 A | 3.0 A | 3.0 A | - | 3.0 A / 3.5 A — Output current rating matches.; LM2576HVR-5.0: Output current matches.; LM2596S-5.0: Higher output current capability. |
| Voltage | 40 V | 40 V | 60 V | 4.5V to 40V | 40 V / 60 V / 4.5V to 40V / 45 V — Maximum input voltage matches.; LM2576HVR-5.0: Higher max input voltage provides more design margin.; XL2576S-5.0E1: Input voltage range is fully compatible.; LM2596S-5.0: Higher maximum input voltage. |
| Package | TO-263-5 | TO-263-5 / TO-263-5L | TO-263-5 | TO263-5L | TO-263-5 / TO-263-5L / TO263-5L — Package is a form and fit match.; LM2576HVR-5.0: Package matches.; XL2576S-5.0E1: TO263-5L is mechanically equivalent to TO-263-5.; LM2596S-5.0: Package appears to be a physical match. |
| Manufacturer | Slkor | - | - | XLSEMI | XLSEMI — Known clone manufacturer. |
Application & sourcing insights
Questions & answers
Verified drop-in options for LM2575S-5.0 are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.