MP8726EL-LF-P Equivalent & Substitute Parts

Part Overview

The MP8726EL-LF-P is a buck switching regulator IC from Monolithic Power Systems Inc., designed for positive adjustable step-down voltage regulation with a 6A output current capability. This component operates across an input voltage range of 4.5V to 21V and provides adjustable output voltage from 0.8V to 18.9V at a 500kHz switching frequency with integrated synchronous rectification.

The MP8726EL-LF-P carries a "Not For New Designs" product status, indicating that Monolithic Power Systems Inc. has discontinued active development and support for this model. This status necessitates identification of functionally equivalent alternatives for new design implementations and ongoing production requirements.

Substiute Parts

MP8726EL-LF-P

Monolithic Power Systems Inc.In Stock: 4270MP8726EL-LF-P Datasheet

Current PartRFQ

MP8725EL-LF-Z

Monolithic Power Systems Inc.In Stock: 24144MP8725EL-LF-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP8726EL-LF-P is determined by strict alignment across the following critical parameters:

Mandatory Matching Parameters:

• Topology: Buck (Step-Down)
• Output Configuration: Positive Adjustable
• Number of Outputs: 1
• Input Voltage Range: 4.5V to 21V minimum
• Output Voltage Range: 0.8V to 18.9V minimum
• Switching Frequency: 500kHz
• Synchronous Rectifier: Yes
• Package Type: 14-VFDFN Exposed Pad
• Operating Temperature Range: -20°C to 85°C minimum
• RoHS Compliance: ROHS3 Compliant

Allowable Variation Parameter:

• Output Current: Equal to or greater than 6A

The MP8725EL-LF-Z qualifies as a manufacturer-recommended substitute despite its 5A output current specification, as it maintains all mandatory electrical and mechanical parameters. The reduced current rating represents a design trade-off that does not compromise functional compatibility within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

The MP8725EL-LF-Z is designated as the manufacturer-recommended substitute for the MP8726EL-LF-P. Both components maintain identical compliance certifications (ROHS3, REACH Unaffected, EAR99 ECCN classification) and share the same MSL rating of 1 (Unlimited), ensuring equivalent handling and storage requirements.

Selection between these parts depends on application current requirements. The MP8726EL-LF-P supports continuous output current up to 6A, while the MP8725EL-LF-Z is rated for 5A maximum output current. Applications requiring sustained output current below 5A may use either part interchangeably. Applications requiring output current between 5A and 6A must use the MP8726EL-LF-P or evaluate alternative regulators with higher current ratings.

Both parts carry "Not For New Designs" status from the manufacturer, indicating that neither component is recommended for new design implementations. For new designs, evaluation of current-generation buck regulator alternatives from Monolithic Power Systems Inc. or other manufacturers is advised.

Frequently Asked Questions (FAQ)

Q: Can the MP8725EL-LF-Z directly replace the MP8726EL-LF-P in existing designs?

A: Direct replacement is possible only if the application's maximum sustained output current requirement does not exceed 5A. The MP8725EL-LF-Z maintains identical electrical specifications, switching frequency, output voltage range, input voltage range, and package configuration. If the design requires output current between 5A and 6A, the MP8726EL-LF-P must be retained or an alternative regulator with higher current rating must be selected.

Q: Are there any PCB layout or thermal management differences between these parts?

A: Both parts use the 14-VFDFN Exposed Pad package (14-QFN 3x4) with identical pinout and footprint. PCB layout and thermal management considerations remain unchanged between the two parts. The exposed pad design in both components provides equivalent thermal dissipation characteristics for their respective current ratings.

Q: What is the significance of the "Not For New Designs" status?

A: This status indicates that Monolithic Power Systems Inc. has discontinued active development and support for both the MP8726EL-LF-P and MP8725EL-LF-Z. While these parts remain available in inventory and are suitable for production use in existing designs, they are not recommended for new design implementations. New designs should evaluate current-generation alternatives.

Q: Are the RoHS and REACH compliance certifications identical?

A: Yes. Both the MP8726EL-LF-P and MP8725EL-LF-Z are ROHS3 Compliant and REACH Unaffected, with identical MSL ratings of 1 (Unlimited). Compliance documentation and handling requirements are equivalent.

Q: What is the primary electrical difference between these parts?

A: The sole electrical difference is the maximum continuous output current specification: 6A for the MP8726EL-LF-P versus 5A for the MP8725EL-LF-Z. All other electrical parameters, including input voltage range, output voltage range, switching frequency, and synchronous rectification capability, are identical.