MP86981DU-LF-Z Equivalent & Substitute Parts

Part Overview

The MP86981DU-LF-Z is a switching regulator IC controller manufactured by Monolithic Power Systems Inc., designed for power management applications with a maximum output rating of 27V at 20A in a 18-PowerWFDFN surface mount package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The obsolete status necessitates evaluation of active alternative components that maintain functional and electrical compatibility with the original design specifications.

Substiute Parts

MP86981DU-LF-Z

Monolithic Power Systems Inc.In Stock: 914MP86981DU-LF-Z Datasheet

Current PartRFQ

MP86901-CGLT-Z

Monolithic Power SystemsIn Stock: 35155MP86901-CGLT-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP86981DU-LF-Z is based on the following critical electrical and mechanical parameters:

Voltage Rating: The original part operates at 27V maximum. Substitute parts must maintain voltage compatibility within the design envelope.

Current Rating: The original part is rated for 20A output. Substitute parts must support equivalent or higher current capacity to ensure thermal and electrical performance parity.

Package Type: The original part uses 18-PowerWFDFN (5x5) surface mount packaging. Substitute parts must use compatible package footprints to ensure PCB layout compatibility without redesign.

Functional Classification: Both the original and substitute parts must operate as switching regulator controllers within the Power Management (PMIC) category.

Regulatory Compliance: Substitute parts must maintain ROHS3 compliance and REACH unaffected status to satisfy manufacturing and environmental requirements.

The MP86901-CGLT-Z qualifies as a manufacturer-recommended substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The MP86901-CGLT-Z is designated as the manufacturer-recommended substitute for the obsolete MP86981DU-LF-Z. Selection of this substitute is supported by the following factors:

Product Status: The MP86901-CGLT-Z maintains active product status, ensuring ongoing availability and manufacturing support from Monolithic Power Systems, whereas the original part is obsolete.

Regulatory Compliance: Both parts maintain identical ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements without modification.

Electrical Specifications: The substitute part provides 25A current capacity, exceeding the original 20A specification, and operates at 26V, maintaining functional compatibility within typical design margins.

Manufacturer Endorsement: The substitute relationship is established by Monolithic Power Systems Inc., the original component manufacturer, providing engineering confidence in the substitution.

Package Consideration: The substitute uses TQFN 3x4 packaging, which differs from the original 18-PowerWFDFN package. PCB layout modification is required for implementation of this substitute.

Frequently Asked Questions (FAQ)

Q: Can the MP86901-CGLT-Z be used as a direct drop-in replacement for the MP86981DU-LF-Z?

A: The MP86901-CGLT-Z is electrically compatible as a substitute but requires PCB layout modification due to different package types. The original uses 18-PowerWFDFN (5x5) while the substitute uses TQFN 3x4 packaging.

Q: What are the key electrical differences between these parts?

A: The MP86901-CGLT-Z operates at 26V maximum (versus 27V) and provides 25A output capacity (versus 20A). Both differences favor the substitute in terms of current capacity, though voltage rating is slightly lower.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the MP86981DU-LF-Z and MP86901-CGLT-Z maintain ROHS3 compliance and REACH unaffected status, satisfying current manufacturing and environmental requirements.

Q: Why is the original part obsolete?

A: Product obsolescence is determined by the manufacturer based on market demand and product lifecycle management. The MP86981DU-LF-Z has been superseded by newer designs, including the MP86901-CGLT-Z.

Q: Is the substitute part readily available?

A: The MP86901-CGLT-Z is an active product with documented inventory availability, ensuring supply continuity for new designs and production requirements.

Q: What design considerations are necessary when implementing the substitute?

A: Primary consideration is package footprint redesign. The TQFN 3x4 package requires different PCB layout compared to the 18-PowerWFDFN package. Electrical specifications remain compatible within design margins.