LM2575HVT-3.3/NOPB Equivalent & Substitute Parts

Part Overview

The LM2575HVT-3.3/NOPB is an active buck switching regulator IC manufactured by Texas Instruments, delivering a fixed 3.3V output at 1A from input voltages ranging 4V to 60V. This TO-220-5 packaged component operates at 52kHz switching frequency and is compliant with ROHS3 and REACH standards. Substitute parts are identified when equivalent electrical performance, output voltage, package type, and compliance certifications align with application requirements.

Substiute Parts

LM2575HVT-3.3/NOPB

Texas InstrumentsIn Stock: 6329LM2575HVT-3.3/NOPB Datasheet

Current PartRFQ

AP1501-33T5L-U

Diodes IncorporatedIn Stock: 1952AP1501-33T5L-U Datasheet

MFR RecommendedRFQ

LM2575-3.3WT

Microchip TechnologyIn Stock: 5277LM2575-3.3WT Datasheet

MFR RecommendedRFQ

MIC4575-3.3WT

Microchip TechnologyIn Stock: 4220MIC4575-3.3WT Datasheet

MFR RecommendedRFQ

MIC4576-3.3WT

Microchip TechnologyIn Stock: 3727MIC4576-3.3WT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are qualified based on the following criteria derived from the main part specifications:

• Fixed 3.3V output voltage
• TO-220-5 package configuration
• Buck topology (step-down function)
• Positive output configuration
• Single output
• ROHS3 compliance and REACH unaffected status
• Active product status
• Through-hole mounting type

Substitutes are grouped by output current capability and maximum input voltage rating, as these parameters determine application suitability within the same voltage class.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the original LM2575HVT-3.3/NOPB.

LM2575-3.3WT (Microchip Technology) provides direct functional equivalence with identical output current (1A), switching frequency (52kHz), and extended operating temperature range (-40°C to 125°C). Maximum input voltage is reduced to 40V compared to the original 60V specification.

AP1501-33T5L-U (Diodes Incorporated) offers increased output current capability (3A) within the same TO220-5L package footprint, suitable for applications requiring higher current delivery at 3.3V output.

MIC4575-3.3WT (Microchip Technology) combines buck and buck-boost topologies with 1.7A switch current and 200kHz switching frequency, operating within 4V to 24V input range and -40°C to 85°C temperature limits.

MIC4576-3.3WT (Microchip Technology) delivers 3A output current with 200kHz switching frequency across 4V to 36V input range and -40°C to 85°C operating temperature.

Frequently Asked Questions (FAQ)

Q: Can LM2575-3.3WT replace LM2575HVT-3.3/NOPB in all applications?

A: LM2575-3.3WT is functionally equivalent for applications with input voltages up to 40V. The original part supports input voltages to 60V. Verify your input voltage specification before substitution.

Q: What is the difference between MIC4575-3.3WT and MIC4576-3.3WT?

A: MIC4575-3.3WT supports both buck and buck-boost topologies with 1.7A switch current and operates to 24V maximum input. MIC4576-3.3WT is buck-only with 3A output current and 36V maximum input voltage.

Q: Are all substitute parts in the same package?

A: All parts use TO-220-5 or TO220-5L packages, which are mechanically and electrically compatible for through-hole mounting applications.

Q: Do all substitutes support the same operating temperature range?

A: LM2575-3.3WT matches the original -40°C to 125°C range. MIC4575-3.3WT and MIC4576-3.3WT operate to -40°C to 85°C maximum junction temperature.

Q: Are all parts ROHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original LM2575HVT-3.3/NOPB.