Is there a pin-compatible replacement for LM2576S-12(UMW)?

Possibly. The LM2576S-12 from manufacturer TWGMC and the LM2576HVS-12 from UMW are strong candidates for being pin-compatible. However, due to slight differences in package naming ('TO-263-5', 'TO-263-5L'), you must verify the pinout and footprint using the datasheets before assuming it is a drop-in replacement.

What risks should I check before replacing LM2576S-12(UMW)?

Before replacing, check three main risks: 1) Switching Frequency: Parts like the LM2596 operate at 150kHz vs 52kHz and require changing the external inductor/capacitors. 2) Output Current: Ensure the replacement provides at least 3A. 3) Package/Pinout: Verify the physical footprint and pin functions match exactly to avoid board redesign.

LM2576S-12(UMW) Alternatives, Datasheet & Cross Reference | UMW

The UMW LM2576S-12(UMW) is a robust 3A step-down voltage regulator providing a fixed 12V output, widely used in power management applications. When seeking a substitute, several upgrade paths and functional alternatives are available, but require careful review of switching frequency and package compatibility.

AI replacement insight

Electrical riskmedium

Switching frequency differences (e.g., in LM2596 parts) will alter performance and require redesign.

Package risklow

Most candidates use compatible TO-263 packages, but slight name variations require footprint verification.

Sourcing risklow

The LM2576/LM2596 families are widely multi-sourced, offering good availability from various vendors.

Can it be replaced directly?

There is no guaranteed direct drop-in replacement without verification. However, the LM2576HVS-12 from UMW and the LM2576S-12 from TWGMC are strong candidates that likely share the same pinout and function after package verification.

Best replacement path

The best replacement path is the LM2576HVS-12 from the same manufacturer (UMW), which offers a higher input voltage rating (60V vs 40V) as a direct upgrade, assuming package compatibility is verified.

Main risk

The main risk when substituting is a mismatch in switching frequency, which requires changing external components like the inductor and capacitors. Package footprint differences are a secondary but critical risk.

Recommended alternatives

A high-voltage upgrade from the same manufacturer with a higher 60V input rating and matching key parameters.

View details

Alternative comparison matrix

Feature / factor	LM2576S-12(UMW)	LM2576HVS-12	LM2576S-12	LM2596HVS-12(UMW)	Compatibility / risk
Voltage	40V	60V	40V	60V	60V / 40V — Max input voltage is higher, offering more design margin.; LM2576S-12: Max input voltage matches.; LM2596HVS-12(UMW): Max input voltage is higher.
Package	TO-263	TO-263-5L	TO-263-5	TO-263	TO-263-5L — Package name differs slightly; requires footprint verification.; LM2576S-12: Package name differs slightly; requires footprint verification.; LM2596HVS-12(UMW): Package matches target.
Switching Frequency	52kHz	52kHz	52kHz	150kHz	52kHz / 150kHz — Matching frequency allows reuse of external components.; LM2576S-12: Matching frequency suggests compatibility.; LM2596HVS-12(UMW): Higher frequency requires changing external inductor/capacitors.
Current	3A	3A	-	-	3A — Output current capability matches the target.
Manufacturer	UMW	-	TWGMC	-	TWGMC — Cross-vendor part, requires qualification.

Application & sourcing insights

Questions & answers

The best alternative is likely the LM2576HVS-12 from the same manufacturer, UMW. It offers a higher input voltage (60V vs 40V) while matching all other key parameters. You should verify the 'TO-263-5L' package is footprint-compatible with the original 'TO-263'.