LM2576HVT-15/LB03 Equivalent & Substitute Parts

Part Overview

The LM2576HVT-15/LB03 is a buck switching regulator IC from Texas Instruments, part of the SIMPLE SWITCHER® series. It delivers a fixed 15V output at 3A with an input voltage range of 4V to 60V, designed for through-hole mounting in TO-220-5 package configuration. The device operates across -40°C to 125°C junction temperature and features a 52kHz switching frequency without synchronous rectification.

This part carries Last Time Buy status, indicating end-of-life designation. Identifying equivalent and substitute parts is necessary for design continuity, long-term supply chain planning, and transition to active production alternatives.

Substiute Parts

LM2576HVT-15/LB03

Texas InstrumentsIn Stock: 1090LM2576HVT-15/LB03 Datasheet

Current PartRFQ

LM2576HVT-15/NOPB

Texas InstrumentsIn Stock: 1372LM2576HVT-15/NOPB Datasheet

DirectRFQ

LM2576HVT-15/LF03

Texas InstrumentsIn Stock: 882LM2576HVT-15/LF03 Datasheet

MFR RecommendedRFQ

LM2576TV-015G

onsemiIn Stock: 8910LM2576TV-015G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2576HVT-15/LB03 is determined by the following critical parameters:

• Fixed output voltage of 15V
• Output current capability of 3A minimum
• Buck topology with step-down function
• TO-220-5 package with through-hole mounting
• Input voltage range compatibility (minimum 4V, maximum 60V)
• Switching frequency of 52kHz
• Operating temperature range of -40°C to 125°C
• RoHS3 compliance

Substitute parts must maintain identical or superior electrical performance across all these parameters. Packaging and lead configuration must be compatible with existing PCB designs.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: LM2576HVT-15/NOPB

The LM2576HVT-15/NOPB is the direct equivalent from Texas Instruments with Active product status. It maintains identical electrical specifications, package configuration, and compliance certifications. This part is the recommended transition path from the Last Time Buy LM2576HVT-15/LB03. Higher inventory availability (1313 pcs) supports immediate procurement.

Secondary Substitute: LM2576HVT-15/LF03

The LM2576HVT-15/LF03 is an alternative Texas Instruments variant with Active status and identical electrical performance. It differs only in packaging designation (LF03 vs. LB03) and maintains full compatibility with the original design. This option provides supply flexibility with 832 pcs in stock.

Tertiary Substitute: LM2576TV-015G

The LM2576TV-015G from onsemi carries Obsolete product status and presents input voltage range limitations (7V minimum vs. 4V minimum, 40V maximum vs. 60V maximum). This part is not recommended for new designs or long-term supply planning. Selection of this part requires verification that application input voltage remains within the 7V to 40V window.

Frequently Asked Questions (FAQ)

Q: Can I use LM2576HVT-15/NOPB as a direct replacement for LM2576HVT-15/LB03?

A: Yes. Both parts are Texas Instruments products with identical electrical specifications, output voltage, current rating, input voltage range, switching frequency, and operating temperature. The only difference is packaging designation. No circuit modifications are required.

Q: What is the difference between LM2576HVT-15/LB03 and LM2576HVT-15/LF03?

A: Both parts are functionally equivalent with identical electrical performance. The designation suffix (LB03 vs. LF03) indicates different packaging or lead finish specifications. Both maintain TO-220-5 form factor compatibility and are suitable for through-hole PCB mounting.

Q: Why is LM2576TV-015G listed as a substitute if it has different input voltage limits?

A: The LM2576TV-015G meets the core functional requirements of 15V fixed output at 3A with 52kHz switching frequency. However, its input voltage range (7V to 40V) is narrower than the original part (4V to 60V). This part is only suitable for applications where input voltage remains within 7V to 40V boundaries.

Q: What is the inventory status for each substitute part?

A: LM2576HVT-15/NOPB has 1313 pcs available, LM2576HVT-15/LF03 has 832 pcs available, and LM2576TV-015G has 8900 pcs available. Inventory levels should be verified at time of procurement.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. LM2576HVT-15/NOPB, LM2576HVT-15/LF03, and LM2576TV-015G are all ROHS3 compliant, maintaining regulatory compliance with the original part.

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

A: LM2576HVT-15/NOPB is the recommended choice for new designs. It carries Active product status, ensuring long-term availability and support. It maintains full electrical and mechanical compatibility with the original LM2576HVT-15/LB03 specification.