LM2671M-ADJ Equivalent & Substitute Parts

Part Overview

The LM2671M-ADJ is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for positive adjustable voltage regulation with a 500mA output current capability. This device operates across a wide input voltage range of 6.5V to 40V and provides adjustable output voltage from 1.21V to 37V, making it suitable for diverse power management applications requiring step-down conversion.

The main part number LM2671M-ADJ carries a Last Time Buy product status, indicating discontinued production. Identifying equivalent substitute parts is essential for design continuity, procurement planning, and ensuring long-term supply chain reliability for applications currently utilizing this regulator.

Substiute Parts

LM2671M-ADJ

Texas InstrumentsIn Stock: 74405LM2671M-ADJ Datasheet

Current PartRFQ

LM2671M-ADJ/NOPB

Texas InstrumentsIn Stock: 7957LM2671M-ADJ/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2671M-ADJ is determined by strict equivalence across the following critical parameters:

• Topology & Function: Buck (step-down) converter with positive adjustable output
• Electrical Specifications: Input voltage range 6.5V–40V, output voltage adjustability 1.21V–37V, 500mA output current capability
• Switching Frequency: 260kHz operation
• Package Compatibility: 8-SOIC (0.154", 3.90mm Width) surface mount form factor
• Thermal & Environmental: Operating temperature range -40°C to 125°C, MSL 1 rating
• Compliance: ROHS3 compliance, REACH unaffected status

The substitute part LM2671M-ADJ/NOPB maintains identical electrical and mechanical specifications while differing only in product status (Active vs. Last Time Buy) and packaging format (Tube vs. unspecified for the main part).

Parameter Comparison

Engineering Selection Recommendations

The LM2671M-ADJ/NOPB is a direct functional equivalent to the LM2671M-ADJ. Both parts are manufactured by Texas Instruments and share identical electrical performance, thermal characteristics, and package specifications. The primary distinction is product lifecycle status: the original LM2671M-ADJ is designated Last Time Buy, while LM2671M-ADJ/NOPB maintains Active status with current manufacturing availability.

For new designs or long-term production requirements, LM2671M-ADJ/NOPB is the appropriate selection due to its active product status and confirmed inventory availability. Both parts maintain ROHS3 compliance and REACH unaffected certification, ensuring regulatory alignment across applications.

Frequently Asked Questions (FAQ)

Q: Can LM2671M-ADJ/NOPB be used as a direct replacement for LM2671M-ADJ?

A: Yes. Both parts are electrically and mechanically identical. They share the same input/output voltage specifications, current rating, switching frequency, operating temperature range, and 8-SOIC package footprint. The /NOPB suffix indicates lead-free (No Lead) and halogen-free (No Halogen) compliance, which is a manufacturing designation rather than a functional difference.

Q: What does the Last Time Buy status mean for LM2671M-ADJ?

A: Last Time Buy indicates that Texas Instruments has discontinued production of this part number. Existing inventory may be available through authorized distributors, but no new manufacturing runs are planned. For ongoing production requirements, transitioning to LM2671M-ADJ/NOPB is recommended.

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

A: No. Both parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package with identical pinout and PCB footprint compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both LM2671M-ADJ and LM2671M-ADJ/NOPB are ROHS3 compliant and REACH unaffected, with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the significance of the /NOPB designation?

A: The /NOPB suffix denotes a lead-free and halogen-free version of the part, meeting modern environmental and manufacturing standards. This is a standard Texas Instruments designation and does not affect electrical performance or compatibility.