MP8726EL-LF-Z Equivalent & Substitute Parts

Part Overview

The MP8726EL-LF-Z is a buck switching regulator IC from Monolithic Power Systems Inc., designed for positive adjustable output applications. This device functions as a step-down converter with a single adjustable output, capable of delivering 6A at switching frequencies of 500kHz with integrated synchronous rectification. The part carries a "Not For New Designs" status, making identification of equivalent alternatives essential for ongoing production and maintenance applications.

Substiute Parts

MP8726EL-LF-Z

Monolithic Power Systems Inc.In Stock: 4642MP8726EL-LF-Z 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-Z 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
• Package Type: 14-VFDFN Exposed Pad
• Switching Frequency: 500kHz
• Synchronous Rectifier: Yes
• Operating Temperature Range: -20°C to 85°C minimum
• Mounting Type: Surface Mount

Flexible Parameter (Current Output):

• Current Output rating may vary, provided the substitute meets or exceeds the application requirement

The MP8725EL-LF-Z qualifies as a direct substitute based on these criteria. Both devices share identical input/output voltage specifications, switching frequency, package configuration, and thermal operating range. The primary distinction is the output current rating: MP8725EL-LF-Z provides 5A versus the 6A of the MP8726EL-LF-Z. This substitution is valid for applications requiring 5A or less.

Parameter Comparison

Engineering Selection Recommendations

Both the MP8726EL-LF-Z and MP8725EL-LF-Z maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for industrial and commercial applications. The MSL rating of 1 (Unlimited) for both devices indicates no moisture sensitivity constraints during storage or handling.

Selection between these parts depends solely on application current requirements. The MP8726EL-LF-Z is specified for 6A output capability, while the MP8725EL-LF-Z is rated for 5A. For applications requiring output currents up to 5A, the MP8725EL-LF-Z provides a valid substitute. For applications requiring output currents between 5A and 6A, the MP8726EL-LF-Z remains the appropriate choice.

Both devices share identical electrical characteristics across input voltage range, output voltage adjustability, switching frequency, and thermal operating specifications. PCB layout and component selection remain unchanged between substitutions, as package footprints and pinouts are identical.

Frequently Asked Questions (FAQ)

Q: Can MP8725EL-LF-Z replace MP8726EL-LF-Z in all applications?

A: The MP8725EL-LF-Z is a valid substitute only for applications requiring output currents of 5A or less. If your application requires output currents exceeding 5A, the MP8726EL-LF-Z is required.

Q: Are the package footprints identical between these two parts?

A: Yes. Both devices use the 14-VFDFN Exposed Pad package (14-QFN 3x4), resulting in identical PCB footprints and pinout configurations. No layout modifications are necessary when substituting between these parts.

Q: Do both parts have the same input and output voltage specifications?

A: Yes. Both the MP8726EL-LF-Z and MP8725EL-LF-Z support input voltage ranges from 4.5V to 21V and adjustable output voltage ranges from 0.8V to 18.9V. Feedback network design and output voltage setting remain unchanged.

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

A: This status indicates that Monolithic Power Systems Inc. is not recommending these parts for new product development. However, they remain available for existing production and maintenance applications. Consult the manufacturer for recommended alternatives for new designs.

Q: Are there any thermal or compliance differences between these substitutes?

A: No. Both parts operate across the identical temperature range (-20°C to 85°C), maintain ROHS3 compliance, carry REACH unaffected status, and share MSL rating 1 (Unlimited). Thermal and regulatory characteristics are equivalent.

Q: Can I use MP8726EL-LF-Z as a substitute for MP8725EL-LF-Z?

A: Yes. The MP8726EL-LF-Z can substitute for the MP8725EL-LF-Z in any application, as it provides higher current capability (6A versus 5A) while maintaining all other electrical and mechanical specifications.