LM2676SD-ADJ Equivalent & Substitute Parts

Part Overview

The LM2676SD-ADJ is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for step-down voltage conversion with positive adjustable output. This device delivers 3A output current across an input voltage range of 8V to 40V, with adjustable output voltage from 1.2V to 37V. The part is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

LM2676SD-ADJ

Texas InstrumentsIn Stock: 1510LM2676SD-ADJ Datasheet

Current PartRFQ

LM2676SD-ADJ/NOPB

Texas InstrumentsIn Stock: 2928LM2676SD-ADJ/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2676SD-ADJ is determined by strict equivalence across the following critical parameters:

• Topology and function (buck converter, step-down)
• Output configuration (positive adjustable)
• Electrical specifications (input voltage range 8V–40V, output voltage range 1.2V–37V, 3A output current)
• Switching frequency (260kHz)
• Package type (14-VDFN Exposed Pad)
• Mounting method (surface mount)
• Operating temperature range (-40°C to 125°C)

The LM2676SD-ADJ/NOPB is a direct equivalent manufactured by Texas Instruments with identical electrical and mechanical specifications. The primary distinction is product status: the base LM2676SD-ADJ is obsolete, while the LM2676SD-ADJ/NOPB is active and available in production quantities.

Parameter Comparison

Engineering Selection Recommendations

The LM2676SD-ADJ/NOPB is the direct functional equivalent for applications currently using the obsolete LM2676SD-ADJ. Both parts share identical electrical performance and package specifications, ensuring pin-for-pin compatibility and circuit-level interchangeability.

The LM2676SD-ADJ/NOPB offers the advantage of active product status with current manufacturing availability. Additionally, the LM2676SD-ADJ/NOPB meets ROHS3 compliance requirements, whereas the original LM2676SD-ADJ is RoHS non-compliant. This distinction is significant for applications subject to environmental or regulatory compliance mandates.

Both parts maintain equivalent moisture sensitivity levels and REACH compliance status. Selection between these parts should be based on regulatory requirements and supply chain availability, as electrical and mechanical performance are identical.

Frequently Asked Questions (FAQ)

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

A: Yes. The LM2676SD-ADJ/NOPB is electrically and mechanically identical to the LM2676SD-ADJ. Both parts feature the same input/output voltage ranges, output current rating, switching frequency, package type, and operating temperature range. No circuit modifications are required.

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

A: The primary differences are product status and RoHS compliance. The LM2676SD-ADJ is obsolete and RoHS non-compliant, while the LM2676SD-ADJ/NOPB is active and ROHS3 compliant. Electrical specifications and package specifications are identical.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the 14-VDFN Exposed Pad package with identical pinout and mechanical dimensions. PCB layout and component placement require no modification.

Q: Which part should be selected for new designs?

A: The LM2676SD-ADJ/NOPB should be selected for new designs due to its active product status and current manufacturing availability. The LM2676SD-ADJ is obsolete and should not be specified for new applications.

Q: Does the RoHS compliance difference affect circuit performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both parts deliver identical functional characteristics in circuit operation.