MP38900DL-LF-Z Equivalent & Substitute Parts

Part Overview

The MP38900DL-LF-Z is a buck switching regulator IC manufactured by Monolithic Power Systems Inc., designed for positive adjustable step-down voltage regulation with a 10A output capability. This component operates across an input voltage range of 4.5V to 16V and provides adjustable output voltage from 0.8V to 13V in a 20-VFQFN exposed pad surface mount package.

The MP38900DL-LF-Z is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this regulator topology.

Substiute Parts

MP38900DL-LF-Z

Monolithic Power Systems Inc.In Stock: 45891MP38900DL-LF-Z Datasheet

Current PartRFQ

NB503GQ-Z

Monolithic Power Systems Inc.In Stock: 52691NB503GQ-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP38900DL-LF-Z is determined by alignment of the following critical parameters:

• Input voltage range compatibility (4.5V to 16V minimum requirement)
• Output voltage adjustability range (0.8V to 13V minimum requirement)
• Output current capability (10A minimum requirement)
• Topology (buck switching regulator)
• Output configuration (positive adjustable)
• Package form factor (20-VFQFN or compatible surface mount package)
• Synchronous rectifier presence
• Operating temperature range (-40°C to 125°C minimum requirement)
• Regulatory compliance (ROHS3, REACH, EAR99)

The NB503GQ-Z from Monolithic Power Systems Inc. is identified as a manufacturer-recommended substitute. Both components are manufactured by the same supplier, ensuring design continuity and supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

The NB503GQ-Z is designated as the manufacturer-recommended substitute for the obsolete MP38900DL-LF-Z. Both components are manufactured by Monolithic Power Systems Inc. and share identical regulatory compliance classifications: ROHS3 compliant, REACH unaffected, and EAR99 export classification.

The substitute part maintains equivalent moisture sensitivity level (MSL 1, unlimited) and identical HTSUS commodity classification, ensuring compatibility with supply chain and logistics requirements.

Selection of the NB503GQ-Z is supported by active product status, providing assured long-term availability and manufacturing support compared to the obsolete MP38900DL-LF-Z.

Frequently Asked Questions (FAQ)

Q: What makes the NB503GQ-Z a valid substitute for the MP38900DL-LF-Z?

A: The NB503GQ-Z is designated as the manufacturer-recommended substitute by Monolithic Power Systems Inc. Both components are power management ICs in the same product category, manufactured by the same supplier, and share identical regulatory compliance status (ROHS3, REACH, EAR99).

Q: Is the NB503GQ-Z currently available?

A: Yes. The NB503GQ-Z holds active product status, ensuring ongoing manufacturing support and supply chain availability, unlike the obsolete MP38900DL-LF-Z.

Q: Are there package compatibility considerations?

A: Package specifications for the NB503GQ-Z should be confirmed against design requirements. Both components are surface mount devices from Monolithic Power Systems Inc. Detailed package dimensions and pinout information must be cross-referenced with application schematics.

Q: What compliance certifications apply to both parts?

A: Both the MP38900DL-LF-Z and NB503GQ-Z are ROHS3 compliant, REACH unaffected, and classified under EAR99 export control. Moisture sensitivity level is MSL 1 (unlimited) for both components.

Q: Should electrical parameter specifications be cross-referenced before substitution?

A: Yes. While the NB503GQ-Z is the manufacturer-recommended substitute, detailed electrical specifications including input voltage range, output voltage range, output current capability, and operating temperature range must be verified against application requirements and design documentation.