LM2575MX-5.0 Equivalent & Substitute Parts

Part Overview

The LM2575MX-5.0 is a buck switching regulator IC from Texas Instruments, part of the SIMPLE SWITCHER® series. It provides a fixed 5V output at 1A from input voltages ranging from 4V to 40V, operating at a switching frequency of 52kHz. The device is housed in a 24-SOIC package and is rated for operation from -40°C to 125°C.

This part is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Substiute Parts

LM2575MX-5.0

Texas InstrumentsIn Stock: 1506LM2575MX-5.0 Datasheet

Current PartRFQ

LM2575MX-5.0/NOPB

National SemiconductorIn Stock: 2453LM2575MX-5.0/NOPB Datasheet

DirectRFQ

LM2575-5.0YWM

Microchip TechnologyIn Stock: 4198LM2575-5.0YWM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM2575MX-5.0 are qualified based on the following electrical and mechanical parameters:

• Output voltage specification (5V fixed)
• Output current capability (1A minimum)
• Input voltage operating range (4V to 40V)
• Switching frequency (52kHz)
• Package compatibility (24-SOIC with identical pitch and dimensions)
• Operating temperature range (-40°C to 125°C)
• Topology (buck converter, positive output configuration)

Parts meeting all these criteria are considered direct functional equivalents and may be substituted without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

Both LM2575MX-5.0/NOPB and LM2575-5.0YWM are active product alternatives to the obsolete LM2575MX-5.0. They share identical electrical specifications and package form factor.

The LM2575-5.0YWM from Microchip Technology carries ROHS3 compliance certification, making it suitable for applications subject to RoHS regulatory requirements. The LM2575MX-5.0/NOPB from National Semiconductor is available in bulk packaging and remains in active production status.

Selection between these alternatives should be based on supply chain availability, packaging requirements (bulk versus tube), and regulatory compliance needs of the end application.

Frequently Asked Questions (FAQ)

Q: Can LM2575MX-5.0/NOPB be used as a direct replacement for LM2575MX-5.0?

A: Yes. Both parts share identical electrical specifications, output voltage (5V), output current (1A), input voltage range (4V to 40V), switching frequency (52kHz), and 24-SOIC package dimensions. No circuit modifications are required.

Q: What is the difference between LM2575MX-5.0/NOPB and LM2575-5.0YWM?

A: The primary differences are manufacturer (National Semiconductor versus Microchip Technology), packaging format (bulk versus tube), and RoHS compliance status. The LM2575-5.0YWM is ROHS3 compliant. All electrical and thermal specifications are identical.

Q: Is the 24-SOIC package identical across all three parts?

A: Yes. All three parts use the 24-SOIC package with 0.295" width and 7.50mm body width. PCB footprints and land patterns are compatible.

Q: Why is the original LM2575MX-5.0 listed as obsolete?

A: Product obsolescence is determined by the manufacturer. Active alternatives with identical specifications are available from other manufacturers, ensuring design continuity.

Q: Are there any temperature or frequency differences between the substitutes?

A: No. All three parts operate across the same temperature range (-40°C to 125°C) and switch at 52kHz. Operating characteristics are equivalent.

Q: Which substitute should be selected for new designs?

A: Selection depends on supply chain availability and regulatory requirements. The LM2575-5.0YWM is recommended for applications requiring RoHS3 compliance. Both alternatives are suitable for equivalent electrical performance.