LM2575HVM-12/NOPB Equivalent & Substitute Parts

Part Overview

The LM2575HVM-12/NOPB is a buck switching regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed 12V output at 1A from an input range of 4V to 60V, operating at a switching frequency of 52kHz. The device is packaged in a 24-SOIC (0.295", 7.50mm Width) surface mount configuration and is ROHS3 compliant.

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

LM2575HVM-12/NOPB

Texas InstrumentsIn Stock: 879LM2575HVM-12/NOPB Datasheet

Current PartRFQ

LM2575-12YWM

Microchip TechnologyIn Stock: 1212LM2575-12YWM Datasheet

MFR RecommendedRFQ

LM2575-12YWM-TR

Microchip TechnologyIn Stock: 1010LM2575-12YWM-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2575HVM-12/NOPB is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 12V
• Output current rating of 1A
• Buck topology with positive output configuration
• 52kHz switching frequency
• 24-SOIC surface mount package
• Operating temperature range of -40°C to 125°C
• ROHS3 compliance

The substitute parts identified (LM2575-12YWM and LM2575-12YWM-TR) share the same base product number (LM2575) and maintain functional and electrical equivalence across all critical parameters. The primary differences are in packaging format (tube versus tape & reel) and maximum input voltage specification.

Parameter Comparison

Engineering Selection Recommendations

Both LM2575-12YWM and LM2575-12YWM-TR are active products from Microchip Technology and represent direct functional equivalents to the obsolete LM2575HVM-12/NOPB. Both maintain ROHS3 compliance and identical electrical specifications for output voltage, output current, switching frequency, and operating temperature range.

The primary distinction between the two substitute options is packaging format. The LM2575-12YWM is supplied in tube packaging, while the LM2575-12YWM-TR is supplied in tape & reel format. Selection between these two should be based on procurement and assembly requirements.

A design consideration exists regarding maximum input voltage: the substitute parts specify a maximum input voltage of 40V, compared to 60V for the original part. Applications requiring input voltages exceeding 40V must retain the original LM2575HVM-12/NOPB or identify alternative regulators with higher input voltage ratings.

Frequently Asked Questions (FAQ)

Q: Are LM2575-12YWM and LM2575-12YWM-TR electrically identical?

A: Yes. Both parts share identical electrical specifications including output voltage (12V), output current (1A), switching frequency (52kHz), and operating temperature range (-40°C to 125°C). The difference is packaging format only: tube versus tape & reel.

Q: What is the key limitation when substituting with Microchip parts?

A: The maximum input voltage is reduced from 60V to 40V. If your application requires input voltages above 40V, the substitute parts are not suitable.

Q: Can I use either substitute part as a direct replacement on existing PCBs?

A: Yes, both substitute parts use the identical 24-SOIC package footprint and pinout, enabling direct PCB replacement without layout modifications.

Q: Why is the original part listed as obsolete?

A: Product obsolescence is determined by the manufacturer. The Microchip equivalents (LM2575-12YWM and LM2575-12YWM-TR) are active products and represent the current supply path for this functional specification.

Q: Which packaging format should I select?

A: Tube packaging (LM2575-12YWM) is suitable for lower-volume applications and manual assembly. Tape & reel format (LM2575-12YWM-TR) is optimized for automated pick-and-place assembly and higher-volume production.