LM2596T-5.0 Equivalent & Substitute Parts

Part Overview

The LM2596T-5.0 is a buck switching regulator IC from Texas Instruments, part of the SIMPLE SWITCHER® series. It delivers a fixed 5V output at 3A maximum current and operates across a wide input voltage range of 4.5V to 40V. The device is packaged in TO-220-5 with formed leads for through-hole mounting.

This part is currently in Last Time Buy status, making equivalent and substitute parts essential for long-term design continuity and procurement planning. Alternative models with compatible electrical and mechanical specifications ensure uninterrupted supply chain access.

Substiute Parts

LM2596T-5.0

Texas InstrumentsIn Stock: 35281LM2596T-5.0 Datasheet

Current PartRFQ

LM2596T-5.0/NOPB

National SemiconductorIn Stock: 20316LM2596T-5.0/NOPB Datasheet

MFR RecommendedRFQ

LM2575-5.0WT

Microchip TechnologyIn Stock: 4528LM2575-5.0WT Datasheet

MFR RecommendedRFQ

LM2575T-5G

onsemiIn Stock: 6071LM2575T-5G Datasheet

MFR RecommendedRFQ

LM2576T-005G

onsemiIn Stock: 6914LM2576T-005G 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 LM2596T-5.0 is determined by the following critical parameters:

Primary Substitution Criteria:

• Fixed 5V output voltage
• TO-220-5 package with through-hole mounting
• Output current capability of 3A or greater
• Input voltage range minimum of 4.5V and maximum of 40V or higher
• Operating temperature range of -40°C to 125°C or compatible overlap
• RoHS3 compliance

Secondary Compatibility Factors:

• Switching frequency (150kHz nominal for LM2596T-5.0; alternative frequencies acceptable if within functional range)
• Synchronous rectifier configuration (non-synchronous for all listed parts)
• Number of outputs (single output required)

Substitute parts are grouped into two categories based on output current capability: full 3A equivalents and reduced-current alternatives (1A output). Full equivalents provide direct pin-compatible replacement. Reduced-current alternatives are suitable only for applications with lower power requirements.

Parameter Comparison

Engineering Selection Recommendations

Full Current Equivalents (3A Output):

The LM2596T-5.0/NOPB from National Semiconductor is the primary direct equivalent. It maintains identical electrical specifications including 150kHz switching frequency, 4.5V minimum input voltage, and -40°C to 125°C operating range. Active product status ensures long-term availability.

The MIC4576-5.0WT from Microchip Technology provides 3A output with compatible TO-220-5 packaging. Input voltage minimum is reduced to 4V, and switching frequency is elevated to 200kHz. Operating temperature maximum is limited to 85°C (TA), which may restrict use in high-temperature environments compared to the original specification of 125°C (TJ).

The LM2576T-005G from onsemi delivers 3A output in TO-220-5 package with -40°C to 125°C operating range. Minimum input voltage is specified at 7V, which exceeds the LM2596T-5.0 requirement of 4.5V. This part is suitable only for applications with input voltages at or above 7V.

Reduced Current Alternatives (1A Output):

The LM2575-5.0WT and LM2575T-5G are 1A-rated buck regulators in TO-220-5 packages. These parts are suitable only for applications requiring 1A or less output current. Both maintain 5V fixed output and -40°C to 125°C operating temperature range. Switching frequency is reduced to 52kHz.

All substitute parts listed carry RoHS3 compliance and are currently in Active product status, ensuring regulatory compliance and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can LM2596T-5.0/NOPB be used as a direct replacement for LM2596T-5.0?

A: Yes. The LM2596T-5.0/NOPB maintains identical electrical specifications, package configuration, and pin assignment. The primary difference is product status: the original is Last Time Buy while the /NOPB variant is Active. This makes it the preferred long-term substitute.

Q: What is the difference between the 3A and 1A substitute options?

A: Output current capacity is the primary distinction. The 3A variants (LM2596T-5.0/NOPB, MIC4576-5.0WT, LM2576T-005G) are suitable for applications requiring up to 3A. The 1A variants (LM2575-5.0WT, LM2575T-5G) are limited to 1A maximum output. Selection depends on your circuit's current requirements.

Q: Are all substitute parts compatible with the same PCB layout?

A: All listed substitutes use TO-220-5 package with through-hole mounting, ensuring mechanical compatibility with existing PCB designs. However, electrical performance differences such as switching frequency and input voltage minimums may require circuit validation before implementation.

Q: Why does the MIC4576-5.0WT have a lower maximum operating temperature?

A: The MIC4576-5.0WT specifies -40°C to 85°C (TA, ambient temperature) versus the LM2596T-5.0 specification of -40°C to 125°C (TJ, junction temperature). This difference reflects different measurement methodologies. Applications requiring operation above 85°C ambient should use alternatives with higher temperature ratings.

Q: What is the minimum input voltage requirement for each substitute?

A: LM2596T-5.0 and LM2596T-5.0/NOPB require 4.5V minimum. MIC4576-5.0WT and LM2575-5.0WT require 4V minimum. LM2575T-5G requires 4.75V minimum. LM2576T-005G requires 7V minimum. Verify your input voltage supply meets the selected part's minimum specification.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification, meeting regulatory requirements for hazardous substance restrictions.