LM2676SD-5.0 Equivalent & Substitute Parts

Part Overview

The LM2676SD-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 device operates across an input voltage range of 8V to 40V and features a 260kHz switching frequency in a 14-VDFN surface mount package with exposed pad.

The LM2676SD-5.0 carries an obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and access components with active manufacturing support and current compliance certifications.

Substiute Parts

LM2676SD-5.0

Texas InstrumentsIn Stock: 1253LM2676SD-5.0 Datasheet

Current PartRFQ

LM2676SD-5.0/NOPB

Texas InstrumentsIn Stock: 1242LM2676SD-5.0/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2676SD-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 (14-VDFN Exposed Pad / 14-VSON 5x6)
• Operating temperature range (-40°C to 125°C)
• Synchronous rectifier configuration (non-synchronous)

The LM2676SD-5.0/NOPB qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete), along with updated compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The LM2676SD-5.0/NOPB is the direct functional equivalent of the LM2676SD-5.0. Selection between these parts should be based on the following factors:

Product Status: The LM2676SD-5.0 is obsolete, while the LM2676SD-5.0/NOPB maintains active production status. For new designs or long-term supply chain requirements, the active part number is preferred.

Compliance Certifications: The LM2676SD-5.0/NOPB is ROHS3 compliant, whereas the original part is RoHS non-compliant. Applications subject to RoHS regulations or customer compliance requirements must use the LM2676SD-5.0/NOPB.

Packaging Format: The LM2676SD-5.0/NOPB is supplied in Tape & Reel format, suitable for automated assembly processes. The original part is available in bulk packaging. Packaging selection depends on manufacturing volume and assembly equipment compatibility.

Electrical Equivalence: Both parts are electrically identical across all specified parameters, including input/output voltage ranges, current rating, switching frequency, and operating temperature range. No circuit redesign is required for substitution.

Frequently Asked Questions (FAQ)

Q: Can the LM2676SD-5.0/NOPB be used as a direct replacement for the LM2676SD-5.0?

A: Yes. The LM2676SD-5.0/NOPB is electrically and mechanically identical to the LM2676SD-5.0. Both devices feature identical input voltage range (8V to 40V), fixed 5V output, 3A current rating, 260kHz switching frequency, and 14-VDFN package configuration. No circuit modifications are required.

Q: What is the difference between LM2676SD-5.0 and LM2676SD-5.0/NOPB?

A: The primary differences are product status, compliance certification, and packaging format. The LM2676SD-5.0/NOPB is actively manufactured, ROHS3 compliant, and supplied in Tape & Reel format. The original LM2676SD-5.0 is obsolete, RoHS non-compliant, and supplied in bulk packaging. Electrical performance is identical.

Q: Are there any pin compatibility concerns when substituting these parts?

A: No. Both parts use the identical 14-VDFN Exposed Pad package (14-VSON 5x6 supplier package). Pin count, pinout, and mechanical dimensions are identical. Direct PCB footprint compatibility is confirmed.

Q: Does the RoHS3 compliance of the LM2676SD-5.0/NOPB affect circuit performance?

A: No. RoHS3 compliance relates to material composition and manufacturing processes, not electrical performance. The LM2676SD-5.0/NOPB maintains identical electrical specifications and operating characteristics as the original part.

Q: Which part should be selected for new designs?

A: The LM2676SD-5.0/NOPB should be selected for new designs. It offers active production support, current compliance certifications, and Tape & Reel packaging suitable for modern manufacturing processes.