LM5008MMX Equivalent & Substitute Parts

Part Overview

The LM5008MMX is a buck switching regulator IC from Texas Instruments designed for step-down voltage conversion applications. It delivers positive adjustable output from 2.5V to 75V with a maximum output current of 350mA, operating across an input voltage range of 9.5V to 95V. The device operates at switching frequencies between 50kHz and 600kHz and is housed in an 8-TSSOP/8-MSOP surface mount package.

The LM5008MMX carries a Last Time Buy product status, indicating that this specific part number variant is being discontinued. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently utilizing this component.

Substiute Parts

LM5008MMX

Texas InstrumentsIn Stock: 340367LM5008MMX Datasheet

Current PartRFQ

LM5008MMX/NOPB

Texas InstrumentsIn Stock: 29153LM5008MMX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM5008MMX is determined by strict equivalence across the following critical parameters:

Function and topology must remain buck (step-down) with positive adjustable output configuration. Output voltage range (2.5V to 75V), input voltage range (9.5V to 95V), and output current capability (350mA) must be identical. Switching frequency range (50kHz to 600kHz), operating temperature range (-40°C to 125°C), and package type (8-TSSOP/8-MSOP) must match exactly. RoHS3 compliance and MSL rating of 1 are required for regulatory and handling consistency.

The LM5008MMX/NOPB qualifies as a direct substitute based on complete parameter alignment across all electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The LM5008MMX/NOPB is the direct substitute for the LM5008MMX. Both parts are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications. The primary distinction is product status: the LM5008MMX is Last Time Buy, while the LM5008MMX/NOPB is Active. The /NOPB suffix indicates lead-free plating without additional lead (NOPB = No Outleads Plating Bi-metal), representing the standard commercial packaging variant.

For new designs or ongoing production requiring this buck regulator topology, the LM5008MMX/NOPB is the recommended selection due to its Active status and continued availability. Both parts maintain ROHS3 compliance and identical MSL ratings, ensuring regulatory and handling consistency across supply chain transitions.

Frequently Asked Questions (FAQ)

Q: Can the LM5008MMX/NOPB be used as a direct replacement for the LM5008MMX?

A: Yes. Both parts are electrically and mechanically identical, with matching input/output voltage ranges, current ratings, switching frequency, operating temperature, and package specifications. The /NOPB variant is the active production part number.

Q: What does the /NOPB suffix indicate?

A: NOPB denotes lead-free plating without additional lead content. This is the standard commercial packaging designation and does not affect electrical performance or compatibility.

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

A: No. Both parts use the 8-TSSOP/8-MSOP package with 0.118" width and 3.00mm body dimensions. Pinout and PCB footprint are identical.

Q: Why is the LM5008MMX marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments is discontinuing this specific part number variant. The LM5008MMX/NOPB remains in active production and serves as the replacement.

Q: Are RoHS and MSL ratings the same for both parts?

A: Yes. Both parts are ROHS3 compliant with MSL rating of 1 (Unlimited moisture sensitivity level), ensuring identical handling and environmental compliance requirements.