LM2595T-5.0 Equivalent & Substitute Parts

Part Overview

The LM2595T-5.0 is a buck switching regulator IC from Texas Instruments, delivering a fixed 5V output at 1A in a TO-220-5 through-hole package. This device operates across a wide input voltage range of 4.5V to 40V with a switching frequency of 150kHz. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product roadmap. Finding equivalent or substitute parts is necessary for ongoing production support, maintenance applications, and designs requiring compatible drop-in replacements with equivalent or enhanced electrical characteristics.

Substiute Parts

LM2595T-5.0

Texas InstrumentsIn Stock: 2403LM2595T-5.0 Datasheet

Current PartRFQ

LM2576T-005G

onsemiIn Stock: 6914LM2576T-005G Datasheet

MFR RecommendedRFQ

LM2595TADJG

onsemiIn Stock: 1121LM2595TADJG Datasheet

MFR RecommendedRFQ

MIC4576-5.0WT

Microchip TechnologyIn Stock: 9076MIC4576-5.0WT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2595T-5.0 is determined by the following critical parameters:

• Topology & Function: Buck (step-down) switching regulator topology
• Output Configuration: Positive fixed or adjustable output
• Output Voltage: 5V fixed output (or adjustable with external resistors to achieve 5V)
• Package / Case: TO-220-5 through-hole form factor
• Input Voltage Range: Minimum 4.5V to maximum 40V compatibility
• Current Rating: Equal to or greater than 1A output capability
• Operating Temperature: -40°C to 125°C junction temperature range

The three identified substitute parts meet these criteria with varying enhancements in current capacity, input voltage floor, switching frequency, and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

LM2576T-005G (onsemi): This part provides a direct functional upgrade with 3A output capacity versus the original 1A rating, maintaining the same 5V fixed output and TO-220-5 package. The device is Active status with ROHS3 compliance. The minimum input voltage requirement increases to 7V, which may limit applicability in designs requiring operation below 7V input. The lower switching frequency of 52kHz versus 150kHz results in larger external component requirements. This substitute is suitable for applications where the 7V minimum input threshold is acceptable and higher current capacity is beneficial.

LM2595TADJG (onsemi): This part shares the same base product number (LM2595) and identical electrical specifications as the main part, including 1A output, 4.5V minimum input, and 150kHz switching frequency. However, it offers adjustable output voltage (1.23V to 37V) instead of fixed 5V, providing design flexibility through external resistor configuration. The device is classified as Obsolete, indicating limited long-term availability. ROHS3 compliance is provided. This substitute is appropriate only when adjustable output capability is required and obsolete part status is acceptable for the application timeline.

MIC4576-5.0WT (Microchip Technology): This part delivers 3A output capacity with fixed 5V output in the same TO-220-5 package. Input voltage range spans 4V to 36V, providing the lowest minimum input threshold among all substitutes. Switching frequency is 200kHz, the highest of all options, enabling smaller external component footprints. The device is Active status with ROHS3 compliance. Operating temperature is specified to 85°C ambient (TA) rather than 125°C junction (TJ), which may represent a more conservative thermal rating. This substitute is optimal for applications prioritizing higher current capacity, lower input voltage floor, and active product support.

Frequently Asked Questions (FAQ)

Q: Can the LM2576T-005G directly replace the LM2595T-5.0 in existing designs?

A: Functional replacement is possible due to identical 5V fixed output, TO-220-5 package, and compatible input voltage range (7V to 40V overlap). However, the minimum input voltage increases from 4.5V to 7V. Designs operating below 7V input require verification that this threshold does not violate system requirements. The 3A output rating provides margin above the original 1A specification.

Q: What is the primary advantage of the MIC4576-5.0WT substitute?

A: The MIC4576-5.0WT offers the lowest minimum input voltage (4V) among all substitutes, extending operational range below the original 4.5V specification. Combined with 3A output capacity and 200kHz switching frequency, this part enables designs with reduced external component size and broader input voltage compatibility. Active product status ensures ongoing availability.

Q: Why is the LM2595TADJG listed as a substitute if it is Obsolete?

A: The LM2595TADJG is included because it shares the identical base product number and electrical specifications as the main part, including 1A output, 4.5V minimum input, and 150kHz switching frequency. The adjustable output feature (1.23V to 37V) provides design flexibility for applications requiring voltage adjustment through external resistors. Obsolete status indicates this part should be considered only for maintenance or legacy system support where long-term availability is not critical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The LM2576T-005G, LM2595TADJG, and MIC4576-5.0WT are all ROHS3 compliant. The original LM2595T-5.0 is RoHS non-compliant. Designs requiring RoHS compliance must transition to one of the three substitute parts.

Q: How does switching frequency affect component selection?

A: Switching frequency determines the size and cost of external filter components (inductors and capacitors). Higher switching frequencies (200kHz for MIC4576-5.0WT) enable smaller component values and reduced board space. Lower frequencies (52kHz for LM2576T-005G) require larger external components but may reduce electromagnetic interference in certain applications. The original LM2595T-5.0 operates at 150kHz, placing it between these extremes.

Q: What is the difference between junction temperature (TJ) and ambient temperature (TA) ratings?

A: Junction temperature (TJ) is the temperature at the semiconductor die itself, typically higher than ambient due to internal power dissipation. Ambient temperature (TA) is the surrounding air temperature. The MIC4576-5.0WT specifies -40°C to 85°C TA, while other parts specify -40°C to 125°C TJ. For equivalent thermal performance, designs must account for the temperature rise between junction and ambient, which depends on package thermal resistance and power dissipation.