LM2672MX-12 Equivalent & Substitute Parts

Part Overview

The LM2672MX-12 is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for step-down voltage conversion with a fixed 12V output and 1A current capacity. The device operates across a 6.5V to 40V input range and is housed in an 8-SOIC surface mount package.

The LM2672MX-12 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for applications currently utilizing this component.

Substiute Parts

LM2672MX-12

Texas InstrumentsIn Stock: 3605LM2672MX-12 Datasheet

Current PartRFQ

LM2672MX-12/NOPB

Texas InstrumentsIn Stock: 2276LM2672MX-12/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2672MX-12 is determined by strict alignment across the following electrical and mechanical parameters:

• Output voltage configuration (fixed 12V)
• Output current rating (1A minimum)
• Input voltage operating range (6.5V to 40V)
• Switching topology (buck converter)
• Package form factor (8-SOIC, 0.154" width)
• Operating temperature range (-40°C to 125°C)
• Switching frequency (260kHz)

The LM2672MX-12/NOPB qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction between the main part and its substitute is product status and packaging format, not functional or electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

The LM2672MX-12/NOPB is the direct functional equivalent of the LM2672MX-12. Both devices share identical electrical specifications, switching characteristics, and package geometry, ensuring pin-for-pin and functional compatibility.

The LM2672MX-12/NOPB carries active product status from Texas Instruments, providing assured long-term availability and supply chain stability. The substitute part meets ROHS3 compliance requirements, whereas the original part does not. For applications subject to RoHS regulations or environmental compliance mandates, the LM2672MX-12/NOPB is the appropriate selection.

The packaging format difference (Tape & Reel for the substitute versus bulk for the original) affects procurement and assembly workflows but does not impact electrical performance or circuit functionality.

Frequently Asked Questions (FAQ)

Q: Can the LM2672MX-12/NOPB be used as a direct replacement for the LM2672MX-12?

A: Yes. Both parts are electrically and mechanically identical. Pin configuration, electrical ratings, and package dimensions are equivalent. The substitute part is suitable for direct PCB replacement without circuit modification.

Q: What is the significance of the "/NOPB" suffix in the part number?

A: The "/NOPB" designation indicates the part is supplied in Tape & Reel packaging format without plumbum (lead-free, RoHS compliant). The original LM2672MX-12 uses alternative packaging and does not meet RoHS3 compliance.

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

A: No. Both parts operate at identical switching frequencies (260kHz), support the same output current (1A), and maintain the same operating temperature range (-40°C to 125°C). Thermal performance and efficiency characteristics are equivalent.

Q: Which part should be selected for new designs?

A: The LM2672MX-12/NOPB is the appropriate choice for new designs. It carries active product status, ensuring continued availability and support from Texas Instruments, and meets current RoHS3 environmental compliance standards.

Q: Is the 8-SOIC package footprint identical between both parts?

A: Yes. Both parts use the 8-SOIC package with 0.154" (3.90mm) width. PCB footprints, land patterns, and assembly processes are identical.