LM2575N-15/NOPB Equivalent & Substitute Parts

Part Overview

The LM2575N-15/NOPB is a buck switching regulator IC from Texas Instruments, part of the SIMPLE SWITCHER® series. It delivers a fixed 15V output at 1A from an input range of 4V to 40V, operating at 52kHz switching frequency. The device is packaged in a 16-DIP (0.300", 7.62mm) through-hole configuration and is ROHS3 compliant.

This part is discontinued at DiGi Electronics. Identifying equivalent and substitute parts ensures design continuity and supply chain reliability for applications requiring fixed 15V buck regulation in DIP packaging.

Substiute Parts

LM2575N-15/NOPB

Texas InstrumentsIn Stock: 1071LM2575N-15/NOPB Datasheet

Current PartRFQ

TL2575-15IN

Texas InstrumentsIn Stock: 970TL2575-15IN Datasheet

MFR RecommendedRFQ

TL2575HV-15IN

Texas InstrumentsIn Stock: 1100TL2575HV-15IN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2575N-15/NOPB is determined by the following critical parameters:

• Fixed output voltage of 15V
• Output current capability of 1A
• Buck topology with positive output configuration
• 16-DIP through-hole package
• Switching frequency of 52kHz
• Operating temperature range of -40°C to 125°C
• ROHS3 compliance

The substitute parts identified (TL2575-15IN and TL2575HV-15IN) maintain these core electrical and mechanical specifications. The primary distinction between substitutes relates to maximum input voltage rating, which affects suitability for different supply environments.

Parameter Comparison

Engineering Selection Recommendations

Both TL2575-15IN and TL2575HV-15IN are active products from Texas Instruments and represent direct functional equivalents to the discontinued LM2575N-15/NOPB. Both maintain ROHS3 compliance and identical electrical performance for standard 15V buck regulation applications.

Selection between the two substitutes depends on input voltage requirements:

• TL2575-15IN: Suitable for applications with input voltage up to 40V. Directly matches the maximum input voltage of the original part.
• TL2575HV-15IN: Suitable for applications requiring input voltage up to 60V. Provides extended input voltage range for higher-voltage supply environments.

Both parts are available in active inventory and are suitable for direct PCB replacement in 16-DIP through-hole designs.

Frequently Asked Questions (FAQ)

Q: Can TL2575-15IN and TL2575HV-15IN be used interchangeably with LM2575N-15/NOPB?

A: Both parts are functionally equivalent for applications within the 4.75V to 40V input range. The TL2575HV-15IN additionally supports input voltages up to 60V. Pin configuration, package, and output specifications are identical across all three parts.

Q: What is the difference between TL2575-15IN and TL2575HV-15IN?

A: The primary difference is maximum input voltage rating. TL2575-15IN supports up to 40V input, while TL2575HV-15IN supports up to 60V input. All other electrical and mechanical specifications are identical.

Q: Are there any package or mounting differences between these parts?

A: No. All three parts use the same 16-DIP (0.300", 7.62mm) through-hole package and are mounted identically on PCBs.

Q: Do these substitutes maintain the same switching frequency?

A: Yes. All three parts operate at 52kHz switching frequency.

Q: Are the substitute parts ROHS3 compliant?

A: Yes. Both TL2575-15IN and TL2575HV-15IN are ROHS3 compliant, matching the compliance status of the original LM2575N-15/NOPB.

Q: Which substitute should I choose for a new design?

A: For new designs, either active substitute is appropriate. Select TL2575HV-15IN if your application may encounter input voltages above 40V. Otherwise, TL2575-15IN is suitable for standard 15V buck regulation applications.