LM2576TV-3.3 Equivalent & Substitute Parts

Part Overview

The LM2576TV-3.3 is a buck switching regulator IC from onsemi, rated for 3.3V fixed output at 3A maximum current. This through-hole TO-220-5 component operates across a 7V to 40V input range with a 52kHz switching frequency. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

LM2576TV-3.3

onsemiIn Stock: 3056LM2576TV-3.3 Datasheet

Current PartRFQ

LM2576TV-3.3G

onsemiIn Stock: 1008LM2576TV-3.3G Datasheet

DirectRFQ

LM2575HVT-3.3/LF03

Texas InstrumentsIn Stock: 955LM2575HVT-3.3/LF03 Datasheet

SimilarRFQ

TL2575-33IKV

Texas InstrumentsIn Stock: 1444TL2575-33IKV Datasheet

SimilarRFQ

TL2575HV-33IKV

Texas InstrumentsIn Stock: 2465TL2575HV-33IKV Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2576TV-3.3 is determined by the following critical parameters:

• Output Voltage: 3.3V fixed output
• Package: TO-220-5 Formed Leads (physical and electrical compatibility)
• Switching Frequency: 52kHz (circuit timing compatibility)
• Operating Temperature Range: -40°C to 125°C (TJ)
• Topology: Buck switching regulator

Substitute parts are grouped into two categories:

Direct Equivalent: LM2576TV-3.3G (onsemi) — identical specifications with improved RoHS3 compliance status.

Similar Substitutes: LM2575HVT-3.3/LF03, TL2575-33IKV, and TL2575HV-33IKV (Texas Instruments) — share the same output voltage, package, switching frequency, and operating temperature range. These parts differ in output current rating (1A vs. 3A) and input voltage range specifications.

Parameter Comparison

Engineering Selection Recommendations

LM2576TV-3.3G is the preferred direct replacement. It maintains identical electrical specifications and package configuration while offering ROHS3 compliance status. Both parts share obsolete product status; however, LM2576TV-3.3G provides improved regulatory alignment for new designs.

LM2575HVT-3.3/LF03, TL2575-33IKV, and TL2575HV-33IKV are active product alternatives from Texas Instruments. These substitutes are suitable only for applications where the output current requirement does not exceed 1A. All three maintain the 3.3V output voltage, 52kHz switching frequency, TO-220-5 package, and -40°C to 125°C operating temperature range. Selection among these three depends on input voltage range requirements: TL2575-33IKV supports 4.75V to 40V, while TL2575HV-33IKV extends to 60V maximum input. LM2575HVT-3.3/LF03 accepts 4V minimum input and 60V maximum input. All three carry ROHS3 compliance and active product status.

Frequently Asked Questions (FAQ)

Q: Can LM2575 series parts directly replace the LM2576TV-3.3 in all applications?

A: LM2575 series substitutes are compatible only for applications requiring 1A or less output current. The LM2576TV-3.3 is rated for 3A output. If your design draws more than 1A, LM2575 variants will not provide adequate current capacity.

Q: What is the difference between TL2575-33IKV and TL2575HV-33IKV?

A: Both parts share identical output voltage (3.3V), output current (1A), switching frequency (52kHz), and package (TO-220-5). The primary difference is maximum input voltage: TL2575-33IKV supports up to 40V, while TL2575HV-33IKV supports up to 60V. Select based on your input voltage requirements.

Q: Is LM2576TV-3.3G a direct equivalent?

A: Yes. LM2576TV-3.3G maintains all electrical specifications, output current rating (3A), input voltage range (7V to 40V), switching frequency (52kHz), and TO-220-5 package configuration. The primary difference is improved RoHS3 compliance status.

Q: Can I use LM2575HVT-3.3/LF03 if my application requires lower input voltage than 7V?

A: Yes. LM2575HVT-3.3/LF03 accepts input voltage as low as 4V, compared to the LM2576TV-3.3 minimum of 7V. However, output current is limited to 1A with this substitute.

Q: Are all substitute parts available in the same packaging?

A: Yes. All listed substitutes use TO-220-5 Formed Leads through-hole packaging, ensuring mechanical and electrical compatibility with existing PCB layouts.

Q: What compliance certifications apply to these parts?

A: LM2576TV-3.3 is RoHS non-compliant. LM2576TV-3.3G, LM2575HVT-3.3/LF03, TL2575-33IKV, and TL2575HV-33IKV are all ROHS3 compliant. All parts are REACH unaffected and classified as EAR99 for export control purposes.