LM2576HVT-5.0/LB03 Equivalent & Substitute Parts

Part Overview

The LM2576HVT-5.0/LB03 is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, delivering fixed 5V output at 3A in a TO-220-5 package. This part is classified as Last Time Buy, indicating discontinued production. Identifying equivalent and substitute parts is essential for design continuity, inventory management, and long-term product support.

Substiute Parts

LM2576HVT-5.0/LB03

Texas InstrumentsIn Stock: 1276LM2576HVT-5.0/LB03 Datasheet

Current PartRFQ

LM2576HVT-5.0/NOPB

Texas InstrumentsIn Stock: 5858LM2576HVT-5.0/NOPB Datasheet

DirectRFQ

LM2576HVT-5.0/LF03

Texas InstrumentsIn Stock: 1468LM2576HVT-5.0/LF03 Datasheet

MFR RecommendedRFQ

LM2576TV-5G

onsemiIn Stock: 1984LM2576TV-5G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2576HVT-5.0/LB03 is determined by the following critical parameters:

• Output Voltage & Current: 5V fixed output at 3A maximum
• Input Voltage Range: Minimum 4V, maximum 60V
• Package Type: TO-220-5 Formed Leads
• Topology: Buck switching regulator
• Switching Frequency: 52kHz
• Operating Temperature Range: -40°C to 125°C
• Compliance: ROHS3 and REACH Unaffected status

Substitute parts must match or exceed these specifications. Parts with identical electrical characteristics and package form factor are classified as direct equivalents. Parts from alternative manufacturers meeting the same functional requirements are classified as manufacturer-recommended substitutes.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Texas Instruments): LM2576HVT-5.0/NOPB and LM2576HVT-5.0/LF03 are functionally identical to the LM2576HVT-5.0/LB03 with identical electrical specifications and package configuration. Both parts carry Active product status, ensuring long-term availability and supply chain stability. These are the primary recommended substitutes for new designs and inventory replenishment.

Cross-Manufacturer Substitute (onsemi): LM2576TV-5G is a manufacturer-recommended alternative from onsemi. This part maintains identical output voltage, current rating, switching frequency, and package form factor. However, the input voltage range differs: minimum 7V (versus 4V) and maximum 40V (versus 60V). This restriction limits applicability to designs operating within the 7V to 40V input range. The part carries Active product status and full compliance certifications.

Product Status Consideration: The LM2576HVT-5.0/LB03 is Last Time Buy, indicating no further production. Designs currently using this part number should transition to LM2576HVT-5.0/NOPB or LM2576HVT-5.0/LF03 to ensure continued component availability.

Frequently Asked Questions (FAQ)

Q: Can LM2576HVT-5.0/NOPB directly replace LM2576HVT-5.0/LB03?

A: Yes. Both parts are Texas Instruments LM2576 variants with identical electrical specifications, output voltage, current rating, switching frequency, and TO-220-5 package configuration. The primary difference is product status: LM2576HVT-5.0/NOPB is Active, while LM2576HVT-5.0/LB03 is Last Time Buy.

Q: What is the difference between LM2576HVT-5.0/LF03 and LM2576HVT-5.0/NOPB?

A: Both parts are electrically and functionally identical. The suffix designates packaging and lead formation specifications. LM2576HVT-5.0/LF03 specifies formed leads, while LM2576HVT-5.0/NOPB indicates standard packaging. Both are Active status parts suitable for new designs.

Q: Can LM2576TV-5G replace LM2576HVT-5.0/LB03 in all applications?

A: LM2576TV-5G is compatible only for designs operating within the 7V to 40V input voltage range. The original part supports 4V to 60V input. If your design requires operation below 7V or above 40V input voltage, LM2576TV-5G is not suitable. For applications within this narrower range, LM2576TV-5G is a valid substitute.

Q: Are all substitute parts ROHS3 and REACH compliant?

A: Yes. LM2576HVT-5.0/NOPB, LM2576HVT-5.0/LF03, and LM2576TV-5G all carry ROHS3 Compliant and REACH Unaffected certifications, matching the original part's compliance status.

Q: What is the significance of "Formed Leads" in the package specification?

A: Formed leads indicate pre-shaped lead geometry optimized for specific mounting applications. Parts with formed leads (LM2576HVT-5.0/LB03, LM2576HVT-5.0/LF03, LM2576TV-5G) have identical mechanical compatibility. LM2576HVT-5.0/NOPB uses standard TO-220-5 packaging without pre-formed leads, which may require lead forming during assembly depending on PCB design requirements.