MP2482DN-LF-Z Equivalent & Substitute Parts

Part Overview

The MP2482DN-LF-Z is a buck switching regulator IC from Monolithic Power Systems Inc., designed for positive adjustable step-down voltage regulation with a 5A output current capability. This device operates across a wide input voltage range of 4.5V to 30V and provides adjustable output voltage from 0.81V to 27V, making it suitable for diverse power management applications.

The MP2482DN-LF-Z carries a "Not For New Designs" product status, indicating that Monolithic Power Systems Inc. has discontinued active development and support for this model. Organizations requiring this functionality for new projects or seeking components with extended lifecycle support should evaluate qualified substitute parts that maintain electrical and mechanical compatibility while offering active product status and improved performance characteristics.

Substiute Parts

MP2482DN-LF-Z

Monolithic Power Systems Inc.In Stock: 55165MP2482DN-LF-Z Datasheet

Current PartRFQ

MP8765GQ-Z

Monolithic Power Systems Inc.In Stock: 34653MP8765GQ-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP2482DN-LF-Z are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Function: Step-down (buck) switching regulator topology
• Output Configuration: Positive adjustable voltage regulation
• Output Current Capability: Equal to or greater than 5A
• Input Voltage Range: Minimum 4.5V support with maximum rating of 22V or higher
• Output Voltage Adjustability: Minimum 0.81V or lower, with maximum 5.5V or higher
• Mounting Type: Surface mount technology
• Compliance: ROHS3 compliant, REACH unaffected

Secondary Considerations:

• Switching frequency and synchronous rectifier implementation may vary
• Package form factor differs but maintains surface mount compatibility
• Operating temperature range and product lifecycle status

The MP8765GQ-Z qualifies as a manufacturer-recommended substitute based on these criteria, with enhanced performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The MP8765GQ-Z is the manufacturer-recommended substitute for the MP2482DN-LF-Z and is qualified for direct replacement in applications where the following conditions are met:

Compatibility Conditions:

• Application input voltage does not exceed 22V (MP8765GQ-Z maximum rating)
• Application output voltage requirement falls within 0.604V to 5.5V range
• PCB layout can accommodate the 16-PowerVFQFN (3x3) package footprint
• Thermal management design accounts for the higher operating temperature capability (125°C junction temperature)

Advantages of MP8765GQ-Z:

• Active product status with ongoing manufacturer support
• Higher output current capability (6A versus 5A)
• Integrated synchronous rectifier for improved efficiency
• Extended operating temperature range
• Lower moisture sensitivity level (1 versus 2A)
• Higher switching frequency (500kHz versus 420kHz)

Design Considerations:

• Package change from 8-SOIC to 16-PowerVFQFN requires PCB redesign
• Input voltage ceiling reduction from 30V to 22V may limit application scope
• Output voltage maximum reduction from 27V to 5.5V restricts high-voltage output applications
• ROHS3 compliance and REACH unaffected status maintained across both parts

Frequently Asked Questions (FAQ)

Q: Can the MP8765GQ-Z directly replace the MP2482DN-LF-Z without circuit modifications?

A: Electrical substitution is possible if application parameters fall within MP8765GQ-Z specifications. However, package differences (8-SOIC versus 16-PowerVFQFN) require PCB layout changes. Input voltage ceiling reduction from 30V to 22V and output voltage maximum reduction from 27V to 5.5V must be verified against application requirements.

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

A: The MP8765GQ-Z provides higher output current (6A versus 5A), lower minimum output voltage (0.604V versus 0.81V), integrated synchronous rectification, and higher switching frequency (500kHz versus 420kHz). The MP2482DN-LF-Z supports higher input voltage (30V versus 22V) and higher output voltage (27V versus 5.5V).

Q: Why is the MP2482DN-LF-Z marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development and support. New designs should utilize the MP8765GQ-Z, which carries active product status and offers enhanced performance characteristics.

Q: Are both parts RoHS3 compliant?

A: Yes, both the MP2482DN-LF-Z and MP8765GQ-Z are ROHS3 compliant and REACH unaffected.

Q: What is the impact of the package change from 8-SOIC to 16-PowerVFQFN?

A: The package change requires PCB redesign including new footprint layout, trace routing, and thermal management considerations. The 16-PowerVFQFN package provides improved thermal performance through its larger form factor and exposed pad design.

Q: Does the MP8765GQ-Z require different PCB layout considerations?

A: Yes. The 16-PowerVFQFN (3x3) package has different pin assignments, spacing, and thermal pad requirements compared to the 8-SOIC package. Complete schematic and layout review is necessary for proper implementation.

Q: What is the significance of the synchronous rectifier in the MP8765GQ-Z?

A: The integrated synchronous rectifier improves conversion efficiency by reducing switching losses compared to the MP2482DN-LF-Z, which uses asynchronous rectification. This results in lower heat generation and improved overall system efficiency.