LM2679S-5.0 Equivalent & Substitute Parts

Part Overview

The LM2679S-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 5A maximum current. This device operates across an input voltage range of 8V to 40V and is housed in a TO-263-8 (D2PAK) surface mount package. The main part number is currently in Last Time Buy status, making identification of active equivalent parts essential for ongoing design support and procurement planning.

Substiute Parts

LM2679S-5.0

Texas InstrumentsIn Stock: 3940LM2679S-5.0 Datasheet

Current PartRFQ

LM2679S-5.0/NOPB

Texas InstrumentsIn Stock: 1317LM2679S-5.0/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2679S-5.0 is determined by strict equivalence across the following critical parameters:

• Output voltage specification (5V fixed)
• Maximum output current rating (5A)
• Input voltage operating range (8V to 40V minimum/maximum)
• Switching topology (buck converter)
• Package form factor (TO-263-8, D2PAK)
• Thermal operating range (-40°C to 125°C)
• Synchronous rectifier configuration (non-synchronous)

The LM2679S-5.0/NOPB qualifies as a direct substitute based on identical electrical specifications and package requirements. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The LM2679S-5.0/NOPB is the direct equivalent for the LM2679S-5.0. Both devices are manufactured by Texas Instruments and share identical electrical and thermal specifications. The LM2679S-5.0/NOPB carries Active product status, making it the recommended selection for new designs and ongoing procurement. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and commercial applications. The packaging difference (Tube format for the substitute) does not affect electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the LM2679S-5.0/NOPB be used as a direct replacement for the LM2679S-5.0?

A: Yes. Both parts are electrically and mechanically identical. The LM2679S-5.0/NOPB is the active production equivalent and is suitable for direct substitution in all applications.

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

A: The "/NOPB" suffix designates the part as supplied without plumbum (lead-free), indicating RoHS compliance. This is a packaging and compliance designation that does not affect electrical performance.

Q: Are there any package compatibility concerns?

A: No. Both the LM2679S-5.0 and LM2679S-5.0/NOPB use the TO-263-8 (D2PAK) surface mount package with identical pinout and thermal characteristics. PCB layouts and thermal management designs require no modification.

Q: Why is the original part number listed as Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing production. The LM2679S-5.0/NOPB remains in active production and should be specified for new designs to ensure long-term supply availability.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the LM2679S-5.0 and LM2679S-5.0/NOPB are ROHS3 compliant and REACH unaffected, meeting current environmental and safety regulations for industrial applications.

Q: What is the moisture sensitivity level, and does it affect handling?

A: Both parts carry MSL 3 (168 Hours) rating. This requires standard moisture control during storage and handling, with baking recommended if the part has been exposed to humidity exceeding specified limits prior to soldering.