LM2576T-5.0 Equivalent & Substitute Parts

Part Overview

The LM2576T-5.0 is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for step-down voltage conversion with a fixed 5V output at 3A maximum current. This component operates across a wide input voltage range of 4V to 40V and is housed in a TO-220-5 through-hole package. The part is currently in Last Time Buy status, making identification of active equivalent alternatives essential for ongoing design support and procurement planning.

Substiute Parts

LM2576T-5.0

Texas InstrumentsIn Stock: 30308LM2576T-5.0 Datasheet

Current PartRFQ

LM2576T-5.0/NOPB

Texas InstrumentsIn Stock: 27255LM2576T-5.0/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2576T-5.0 is determined by strict equivalence across the following critical parameters:

• Output Voltage Configuration: Fixed 5V output
• Output Current Rating: 3A maximum
• Input Voltage Range: 4V to 40V minimum and maximum
• Topology: Buck (step-down) switching regulator
• Package: TO-220-5 through-hole
• Switching Frequency: 52kHz
• Temperature Range: -40°C to 125°C (TJ)
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The LM2576T-5.0/NOPB qualifies as a direct manufacturer-recommended equivalent based on identical electrical specifications and package configuration. The primary distinction is product status: the original part is Last Time Buy, while the substitute is Active.

Parameter Comparison

Engineering Selection Recommendations

The LM2576T-5.0/NOPB is the manufacturer-recommended substitute for the LM2576T-5.0. Both parts maintain identical electrical and mechanical specifications, ensuring direct pin-for-pin and functional compatibility. The substitute part carries Active product status, providing long-term availability and supply chain continuity compared to the Last Time Buy status of the original part.

For new designs or procurement of replacement inventory, the LM2576T-5.0/NOPB is the appropriate selection. Both parts satisfy ROHS3 compliance and REACH regulatory requirements, with no additional qualification or testing required for substitution.

Frequently Asked Questions (FAQ)

Q: Can the LM2576T-5.0/NOPB be used as a direct replacement for the LM2576T-5.0?

A: Yes. Both parts are electrically and mechanically identical, with matching output voltage (5V), output current (3A), input voltage range (4V to 40V), package configuration (TO-220-5), and operating temperature range (-40°C to 125°C). Pin-for-pin substitution is valid without circuit modification.

Q: What does the "/NOPB" suffix indicate?

A: The "/NOPB" suffix designates the part as supplied without plumbum (lead-free). Both the LM2576T-5.0 and LM2576T-5.0/NOPB are ROHS3 compliant and lead-free; the suffix is a manufacturing designation that does not affect electrical performance or compatibility.

Q: Why is the original LM2576T-5.0 marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued active production of this specific part number variant. The LM2576T-5.0/NOPB remains in Active status and is the recommended path for continued supply and new applications.

Q: Are there any thermal or reliability differences between these parts?

A: No. Both parts operate across the identical temperature range (-40°C to 125°C junction temperature) and share the same thermal characteristics. The TO-220-5 package provides equivalent thermal performance in both variants.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. The identical TO-220-5 package footprint and pin configuration allow direct board-level substitution without PCB redesign or layout modifications.