LM2676S-12 Equivalent & Substitute Parts

Part Overview

The LM2676S-12 is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for step-down voltage conversion with a fixed 12V output at 3A 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 equivalent substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

LM2676S-12

Texas InstrumentsIn Stock: 1246LM2676S-12 Datasheet

Current PartRFQ

LM2676S-12/NOPB

Texas InstrumentsIn Stock: 2063LM2676S-12/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2676S-12 is determined by strict equivalence across the following critical parameters:

• Output voltage configuration (12V fixed)
• Maximum output current rating (3A)
• Input voltage operating range (8V to 40V minimum/maximum)
• Switching topology (buck converter)
• Package type and pin configuration (TO-263-8, D2PAK)
• Thermal operating range (-40°C to 125°C)
• Regulatory compliance (RoHS3, REACH status)

The LM2676S-12/NOPB qualifies as a direct substitute based on identical electrical specifications, package configuration, and compliance certifications. The primary distinction is packaging format (Tube vs. standard packaging) and active product status, which supports long-term availability.

Parameter Comparison

Engineering Selection Recommendations

The LM2676S-12/NOPB is the direct equivalent for the LM2676S-12. Both parts share identical electrical characteristics, thermal specifications, and package configurations. The primary advantage of selecting LM2676S-12/NOPB is its Active product status, which ensures continued availability and support from Texas Instruments, whereas the original LM2676S-12 is designated Last Time Buy. For new designs or long-term production requirements, LM2676S-12/NOPB is the appropriate selection. Both parts maintain full RoHS3 and REACH compliance, with identical moisture sensitivity ratings suitable for standard surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can LM2676S-12/NOPB be used as a direct replacement for LM2676S-12?

A: Yes. Both parts are electrically and mechanically identical, with matching output voltage (12V), output current (3A), input voltage range (8V to 40V), switching frequency (260kHz), and TO-263-8 package configuration. Pin-for-pin compatibility is maintained.

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

A: The "/NOPB" designation indicates the part is supplied in Tube packaging format. This is a packaging variation only and does not affect electrical performance or compatibility.

Q: Why is the original LM2676S-12 marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments is discontinuing this specific part number variant. The LM2676S-12/NOPB remains in Active status and is the recommended alternative for ongoing procurement.

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) and maintain the same Moisture Sensitivity Level (MSL 3, 168 Hours). Thermal and reliability characteristics are equivalent.

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

A: Yes. The TO-263-8 (D2PAK) package configuration is identical, and all electrical parameters match. No PCB layout modifications are required for substitution.