Is there a pin-compatible replacement for LM2576S-ADJ(UMW)?

The LM2576HVS-ADJ(UMW) is very likely pin-compatible as it belongs to the same product series in the same package. However, datasheet verification of the pinout is always recommended before board layout.

What risks should I check before replacing LM2576S-ADJ(UMW)?

The main risks are electrical and mechanical. Check for switching frequency differences (e.g., 52kHz vs 150kHz), which require changing external components. Also, verify the package dimensions and pinout, as parts from different vendors may have slight variations.

LM2576S-ADJ(UMW) Alternatives, Datasheet & Cross Reference | UMW

The LM2576S-ADJ(UMW) is a popular 3A adjustable step-down voltage regulator in a TO-263 package. When seeking alternatives, key parameters to verify include the 52 kHz switching frequency, package dimensions, and pinout.

AI replacement insight

Electrical riskhigh

Using a part with a different switching frequency (e.g., 150kHz) requires a full redesign of the power stage.

Package riskmedium

Cross-vendor parts or those with slightly different package names (e.g., TO-263-5) require mechanical verification.

Can it be replaced directly?

A direct, verified drop-in replacement is not confirmed without pinout analysis. The LM2576HVS-ADJ(UMW) is the strongest candidate for a direct replacement.

Best replacement path

Upgrade to the higher-voltage LM2576HVS-ADJ(UMW) for a likely drop-in replacement with improved input voltage tolerance.

Main risk

Switching frequency mismatch with alternatives like the LM2596 series, which necessitates redesign of the inductor and capacitors.

Recommended alternatives

Higher input voltage version from the same manufacturer with matching frequency and package.

View details

Alternative comparison matrix

Feature / factor	LM2576S-ADJ(UMW)	LM2576HVS-ADJ(UMW)	LM2596HVS-ADJ(UMW)	LM2576S-ADJ	Compatibility / risk
Package	TO-263	TO-263	TO-263	TO-263-5	TO-263 / TO-263-5 — Package appears identical, increasing likelihood of pin compatibility.; LM2596HVS-ADJ(UMW): Package matches, but electrical differences are significant.; LM2576S-ADJ: Package name differs; TO-263-5 and TO-263 are often compatible but require verification.
Switching Frequency	52 kHz	52 kHz	150 kHz	52 kHz	52 kHz / 150 kHz — Matching frequency avoids redesign of external passive components.; LM2596HVS-ADJ(UMW): Requires redesign of inductor and capacitors.; LM2576S-ADJ: Frequency matches, simplifying electrical evaluation.
Input Voltage Max	40V	60V	60V	-	60V — Higher input voltage provides greater design margin.; LM2596HVS-ADJ(UMW): Higher input voltage provides greater design margin.
Output Current	3A	3A	-	3.5A	3A / 3.5A — Output current capability matches the target.; LM2576S-ADJ: Slightly higher output current is a minor upgrade.
Manufacturer	UMW	-	-	Slkor	Slkor — Cross-vendor parts require careful validation of datasheet parameters.

Application & sourcing insights

Questions & answers

The LM2576HVS-ADJ from the same manufacturer, UMW, is an excellent upgrade path. It offers a higher input voltage range (up to 60V) while maintaining the same package and 52 kHz switching frequency.