LM2671MX-5.0 Equivalent & Substitute Parts

Part Overview

The LM2671MX-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 and 500mA current capacity. This device operates across a wide input voltage range of 6.5V to 40V and is housed in an 8-SOIC surface mount package.

The LM2671MX-5.0 is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

LM2671MX-5.0

Texas InstrumentsIn Stock: 5160LM2671MX-5.0 Datasheet

Current PartRFQ

LM2671MX-5.0/NOPB

Texas InstrumentsIn Stock: 19600LM2671MX-5.0/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2671MX-5.0 is determined by strict equivalence across the following critical parameters:

• Output voltage configuration: Fixed 5V
• Output current rating: 500mA minimum
• Input voltage range: 6.5V to 40V minimum
• Topology: Buck (step-down)
• Package type: 8-SOIC (0.154", 3.90mm Width)
• Operating temperature range: -40°C to 125°C (TJ)
• Switching frequency: 260kHz

Only parts meeting all these specifications are classified as direct substitutes. Variations in any of these parameters disqualify a part from direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The LM2671MX-5.0/NOPB is the direct substitute for the obsolete LM2671MX-5.0. Both parts are manufactured by Texas Instruments and share identical electrical and mechanical specifications across all critical parameters.

The primary distinction between these parts is product status and regulatory compliance. The LM2671MX-5.0/NOPB maintains active product status with Texas Instruments and carries RoHS3 compliance certification, whereas the original LM2671MX-5.0 is obsolete and RoHS non-compliant. The "/NOPB" suffix indicates lead-free plating and enhanced environmental compliance.

For new designs or ongoing production requiring this buck regulator topology, the LM2671MX-5.0/NOPB is the appropriate selection. For legacy systems currently using the LM2671MX-5.0, direct replacement with the LM2671MX-5.0/NOPB is electrically and mechanically compatible without design modification.

Frequently Asked Questions (FAQ)

Q: Can the LM2671MX-5.0/NOPB directly replace the LM2671MX-5.0 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The LM2671MX-5.0/NOPB can be substituted without PCB layout changes or circuit modifications. The "/NOPB" designation indicates lead-free plating and does not affect functional performance.

Q: What does the obsolete status of the LM2671MX-5.0 mean for supply chain planning?

A: Obsolete status indicates Texas Instruments has discontinued active production and support. The LM2671MX-5.0/NOPB is the active equivalent and should be specified for new procurement to ensure long-term availability and manufacturer support.

Q: Are there differences in thermal or electrical performance between these parts?

A: No. Both parts operate at 260kHz switching frequency, deliver 500mA output current, and maintain the same -40°C to 125°C operating temperature range. Thermal and electrical characteristics are identical.

Q: Does the RoHS3 compliance of the LM2671MX-5.0/NOPB affect compatibility?

A: No. RoHS3 compliance is a manufacturing and environmental standard that does not alter electrical or mechanical function. The LM2671MX-5.0/NOPB is fully compatible with designs originally specified for the non-compliant LM2671MX-5.0.

Q: Are packaging options different between these parts?

A: The LM2671MX-5.0/NOPB is available in Cut Tape (CT) and Digi-Reel® packaging options, providing flexibility for different procurement and assembly workflows. Both parts use the same 8-SOIC package footprint.