LM2676SX-5.0 Equivalent & Substitute Parts

Part Overview

The LM2676SX-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. The device operates across an input voltage range of 8V to 40V and features a 260kHz switching frequency in a TO-263-8 (D2PAK) surface mount package.

The main part number LM2676SX-5.0 carries a Last Time Buy product status, indicating discontinued production. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and ongoing support.

Substiute Parts

LM2676SX-5.0

Texas InstrumentsIn Stock: 5066LM2676SX-5.0 Datasheet

Current PartRFQ

LM2676SX-5.0/NOPB

Texas InstrumentsIn Stock: 32213LM2676SX-5.0/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2676SX-5.0 is determined by strict equivalence across the following critical parameters:

• Function and topology (step-down buck converter)
• Output configuration (positive, fixed 5V)
• Current rating (3A output)
• Input voltage range (8V to 40V)
• Switching frequency (260kHz)
• Package type (TO-263-8, D2PAK)
• Operating temperature range (-40°C ~ 125°C)

The LM2676SX-5.0/NOPB is identified as a direct manufacturer-recommended substitute. Both parts share identical electrical specifications, thermal characteristics, and mechanical packaging. The primary distinction lies in product status and packaging format: the original part is Last Time Buy, while the substitute is Active production status with Cut Tape and Digi-Reel® packaging options.

Parameter Comparison

Engineering Selection Recommendations

The LM2676SX-5.0/NOPB is the direct substitute for the LM2676SX-5.0. Both parts are ROHS3 compliant and carry identical electrical and thermal specifications. The substitute part is currently in Active production status, ensuring long-term availability and supply chain stability compared to the Last Time Buy status of the original part.

Both parts maintain the same MSL rating of 3 (168 Hours) and ECCN classification (EAR99), ensuring equivalent handling, storage, and export compliance requirements. The substitute part is available in standard Cut Tape and Digi-Reel® packaging formats, providing flexibility for both prototype and high-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can the LM2676SX-5.0/NOPB be used as a direct replacement for the LM2676SX-5.0?

A: Yes. Both parts are electrically and mechanically identical. The LM2676SX-5.0/NOPB is the manufacturer-recommended substitute with Active production status, making it the preferred choice for new designs and ongoing production.

Q: What is the difference between the two part numbers?

A: The primary difference is product status and packaging availability. The LM2676SX-5.0 is Last Time Buy, while the LM2676SX-5.0/NOPB is Active production. The suffix "/NOPB" indicates the part is available in standard packaging formats (Cut Tape and Digi-Reel®) without lead-free plating options.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance, MSL ratings, and ECCN classifications. Handling, storage, and export requirements are equivalent.

Q: Can I use these parts interchangeably in my PCB design?

A: Yes. Both parts use the identical TO-263-8 (D2PAK) package with 7 leads plus tab. PCB footprints, thermal vias, and component placement are fully compatible.

Q: What packaging options are available for the substitute part?

A: The LM2676SX-5.0/NOPB is available in Cut Tape (CT) and Digi-Reel® packaging formats, suitable for both manual assembly and automated pick-and-place production.