LM2575HVT-15 Buck Switching Regulator IC Equivalent & Substitute Parts

Part Overview

The LM2575HVT-15 is a buck switching regulator IC from Texas Instruments, part of the SIMPLE SWITCHER® series. It provides positive fixed 15V output at 1A from an input range of 4V to 60V, operating at 52kHz switching frequency in a TO-220-5 through-hole package. The main part is currently in Last Time Buy status, making equivalent and substitute parts necessary for ongoing design support and procurement planning.

Substiute Parts

LM2575HVT-15

Texas InstrumentsIn Stock: 2309LM2575HVT-15 Datasheet

Current PartRFQ

LM2575HVT-15/LF03

Texas InstrumentsIn Stock: 1200LM2575HVT-15/LF03 Datasheet

DirectRFQ

LM2575HVT-15/NOPB

Texas InstrumentsIn Stock: 4554LM2575HVT-15/NOPB Datasheet

MFR RecommendedRFQ

LM2575T-15G

onsemiIn Stock: 1226LM2575T-15G Datasheet

MFR RecommendedRFQ

LM2576T-15G

onsemiIn Stock: 2724LM2576T-15G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2575HVT-15 is determined by the following critical parameters: fixed 15V output voltage, 1A output current capability, buck topology, TO-220-5 package, 52kHz switching frequency, and operating temperature range of -40°C to 125°C. Parts are grouped into two categories:

Direct Equivalents (Same Specifications): Parts maintaining identical electrical specifications and package format, differing only in lead formation or packaging configuration.

Functional Alternatives (Higher Current Rating): Parts with the same output voltage, topology, and package but offering increased current capacity, suitable for designs with headroom requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: LM2575HVT-15/NOPB (Texas Instruments) is the preferred substitute. It maintains identical electrical specifications and package format as the main part while offering Active product status with higher inventory availability (4504 pcs). Both parts are ROHS3 compliant and REACH unaffected.

Secondary Recommendation: LM2575HVT-15/LF03 (Texas Instruments) provides direct equivalence with formed leads configuration. Active status and ROHS3 compliance make it suitable for applications where lead forming is acceptable. Inventory is available at 1100 pcs.

Higher Current Alternative: LM2576T-15G (onsemi) offers 3A output current in the same TO-220-5 package and 15V fixed output. This part is suitable for designs requiring current margin above 1A. Note that input voltage range is reduced to 7V minimum and 40V maximum compared to the main part. Product status is Obsolete.

Compatibility Note: LM2575T-15G (onsemi) provides 1A output matching the main part but with reduced input voltage range (4.75V to 40V maximum). Product status is Obsolete.

Frequently Asked Questions (FAQ)

Q: Can LM2575HVT-15/NOPB be used as a direct replacement for LM2575HVT-15?

A: Yes. Both parts share identical electrical specifications: 15V fixed output, 1A output current, 4V to 60V input range, 52kHz switching frequency, and TO-220-5 package. The /NOPB designation indicates lead-free plating, while the main part is in Last Time Buy status. LM2575HVT-15/NOPB is Active and recommended for new designs.

Q: What is the difference between LM2575HVT-15/LF03 and LM2575HVT-15/NOPB?

A: Both are Texas Instruments parts with identical electrical performance. The primary difference is package configuration: LM2575HVT-15/LF03 features formed leads, while LM2575HVT-15/NOPB uses standard leads. Both are ROHS3 compliant and suitable for direct substitution.

Q: Can LM2576T-15G replace LM2575HVT-15 in all applications?

A: LM2576T-15G provides higher output current (3A versus 1A) and maintains the same 15V output and 52kHz switching frequency in TO-220-5 package. However, input voltage range is restricted to 7V to 40V compared to 4V to 60V for the main part. Substitution is valid only if the application input voltage remains within 7V to 40V. This part is Obsolete.

Q: What are the compliance differences between substitute parts?

A: All listed parts are ROHS3 compliant and REACH unaffected. Texas Instruments parts (LM2575HVT-15/LF03 and LM2575HVT-15/NOPB) are Active status. onsemi parts (LM2575T-15G and LM2576T-15G) are Obsolete status. For new designs, Active status parts are preferred for long-term availability.

Q: Is the TO-220-5 package identical across all substitute parts?

A: The package designation is TO-220-5 for all parts. LM2575HVT-15/LF03 specifies TO-220-5 Formed Leads, indicating lead configuration differs from standard TO-220-5. Verify PCB footprint compatibility before substitution if lead forming is a consideration.