LM2576T-005 Equivalent & Substitute Parts

Part Overview

The LM2576T-005 is a buck switching regulator IC from onsemi designed for step-down voltage conversion with a fixed 5V output and 3A current capacity in a TO-220-5 package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The LM2576T-005 operates across a 7V to 40V input range with a 52kHz switching frequency and supports both positive and negative output configurations.

Substiute Parts

LM2576T-005

onsemiIn Stock: 6162LM2576T-005 Datasheet

Current PartRFQ

LM2576T-005G

onsemiIn Stock: 6914LM2576T-005G Datasheet

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LM2575-5.0WT

Microchip TechnologyIn Stock: 4528LM2575-5.0WT Datasheet

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LM2576-5.0WT

Microchip TechnologyIn Stock: 2853LM2576-5.0WT Datasheet

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LM2595T-5.0/NOPB

Texas InstrumentsIn Stock: 2163LM2595T-5.0/NOPB Datasheet

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LM2596T-5.0/NOPB

National SemiconductorIn Stock: 20316LM2596T-5.0/NOPB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2576T-005 is determined by the following critical parameters: fixed 5V output voltage, 3A output current capacity, TO-220-5 package, through-hole mounting, and -40°C to 125°C operating temperature range. Parts are grouped into two categories:

Direct Equivalent: Parts maintaining identical electrical specifications and output configuration flexibility (positive or negative).

Similar Substitutes: Parts with compatible core functionality but variations in input voltage range, switching frequency, output configuration (positive only), or current rating that may require circuit evaluation.

Parameter Comparison

Engineering Selection Recommendations

LM2576T-005G (Direct Equivalent): This part is the primary replacement for the obsolete LM2576T-005. It maintains identical electrical specifications, output configuration capability (positive or negative), and package format. The LM2576T-005G is active in production and RoHS3 compliant, making it suitable for new designs and production continuity.

LM2576-5.0WT (Active Substitute): This Microchip Technology part matches the 3A output current and 52kHz switching frequency of the original. The input voltage range extends to 4V minimum (versus 7V), providing broader input compatibility. Output configuration is limited to positive only. RoHS3 compliance is confirmed.

LM2596T-5.0/NOPB (Active Substitute): This National Semiconductor part maintains 3A output current and TO-220-5 package compatibility. The switching frequency is 150kHz, and input voltage range begins at 4.5V. Output configuration is positive only. This part is active in production with high inventory availability.

LM2575-5.0WT and LM2595T-5.0/NOPB (Limited Current Substitutes): These parts are suitable only for applications requiring 1A or less output current. Both maintain 5V fixed output and TO-220-5 packaging. The LM2575-5.0WT operates at 52kHz with 4V minimum input; the LM2595T-5.0/NOPB operates at 150kHz with 4.5V minimum input. Both are RoHS3 compliant and active in production.

Frequently Asked Questions (FAQ)

Q: Can LM2576T-005G be used as a direct replacement for LM2576T-005?

A: Yes. The LM2576T-005G is electrically and functionally identical to the LM2576T-005, with the same 5V output, 3A current capacity, 52kHz switching frequency, and positive/negative output configuration capability. The primary difference is product status (active versus obsolete) and RoHS3 compliance.

Q: What is the key difference between LM2576-5.0WT and LM2596T-5.0/NOPB?

A: Both parts deliver 3A at 5V output in TO-220-5 packages. The LM2576-5.0WT operates at 52kHz switching frequency with a 4V minimum input voltage. The LM2596T-5.0/NOPB operates at 150kHz with a 4.5V minimum input voltage. The higher switching frequency of the LM2596T-5.0/NOPB may result in smaller external component sizes but requires evaluation for EMI characteristics in your application.

Q: Can I use LM2575-5.0WT or LM2595T-5.0/NOPB in place of LM2576T-005?

A: Only if your application requires 1A or less output current. Both parts are rated for 1A maximum, making them unsuitable for applications requiring the full 3A capacity of the LM2576T-005. Exceeding the rated current will result in thermal shutdown and circuit failure.

Q: Are all substitute parts RoHS compliant?

A: LM2576T-005G, LM2576-5.0WT, LM2575-5.0WT, and LM2595T-5.0/NOPB are RoHS3 compliant. The original LM2576T-005 is RoHS non-compliant. RoHS compliance status for LM2596T-5.0/NOPB is not specified in available documentation.

Q: What is the impact of different switching frequencies on circuit design?

A: The LM2576T-005 and LM2576-5.0WT operate at 52kHz, while LM2596T-5.0/NOPB and LM2595T-5.0/NOPB operate at 150kHz. Higher switching frequency allows for smaller external inductors and capacitors but may introduce different EMI characteristics. Circuit redesign may be necessary when substituting between different frequency parts.

Q: Do all substitute parts support positive and negative output configurations?

A: No. Only LM2576T-005 and LM2576T-005G support both positive and negative output configurations. All other substitutes (LM2576-5.0WT, LM2596T-5.0/NOPB, LM2575-5.0WT, LM2595T-5.0/NOPB) are configured for positive output only. Verify your application requirements before selecting a substitute.

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

A: LM2576T-005 requires 7V minimum input. LM2576T-005G requires 7V minimum input. LM2576-5.0WT and LM2575-5.0WT require 4V minimum input. LM2596T-5.0/NOPB and LM2595T-5.0/NOPB require 4.5V minimum input. Lower minimum input voltage provides greater design flexibility for low-voltage applications.