MP38900DL-B-Z Equivalent & Substitute Parts

Part Overview

The MP38900DL-B-Z is a buck switching regulator IC manufactured by Monolithic Power Systems Inc., designed for step-down voltage conversion applications. This device delivers 10A output current with adjustable positive output voltage ranging from 0.8V to 13V, operating from a 4.5V to 16V input supply. The component features a synchronous rectifier and is housed in a 20-VFQFN exposed pad surface mount package.

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

Substiute Parts

MP38900DL-B-Z

Monolithic Power Systems Inc.In Stock: 745MP38900DL-B-Z Datasheet

Current PartRFQ

NB503GQ-Z

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MP38900DL-B-Z are identified based on strict alignment with the following critical parameters:

Manufacturer Alignment: All substitute parts are sourced from Monolithic Power Systems Inc., ensuring design compatibility and consistent performance characteristics within the same product ecosystem.

Functional Category: Substitute parts operate within the Power Management (PMIC) category and perform step-down (buck) voltage regulation functions.

Output Characteristics: Substitute parts deliver positive adjustable output voltage with single output configuration, matching the primary functional requirement of the MP38900DL-B-Z.

Electrical Specifications: Substitute parts support the required input voltage range (4.5V to 16V minimum/maximum) and output voltage adjustability (0.8V to 13V range).

Current Delivery: Substitute parts are rated for 10A output current, meeting the power delivery requirements of the original design.

Package and Mounting: Substitute parts utilize surface mount packaging in QFN form factor, maintaining PCB layout compatibility.

Compliance and Certifications: All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, REACH unaffected status, and EAR99 export classification, ensuring regulatory and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The MP38900DL-B-Z is classified as obsolete, while the NB503GQ-Z substitute is active. Active product status ensures ongoing manufacturer support, continued availability, and access to technical documentation and design resources.

Compliance Continuity: Both the main part and substitute maintain identical regulatory compliance profiles: ROHS3 compliance, MSL Level 1 rating, REACH unaffected designation, and EAR99 export classification. This alignment ensures no regulatory barriers to substitution.

Manufacturer Consistency: Both components are manufactured by Monolithic Power Systems Inc., providing design ecosystem consistency and reducing qualification complexity for substitute implementation.

Supply Chain Reliability: The NB503GQ-Z substitute demonstrates significantly higher inventory availability (52,618 pieces in stock) compared to the obsolete MP38900DL-B-Z (690 pieces), supporting long-term production continuity and reducing supply chain risk.

Frequently Asked Questions (FAQ)

Q: What determines whether the NB503GQ-Z can substitute for the MP38900DL-B-Z?

A: Substitution eligibility is based on matching functional category (Power Management PMIC), topology (buck step-down regulation), output configuration (positive adjustable), electrical specifications (input voltage range 4.5V–16V, output voltage 0.8V–13V, 10A current delivery), mounting type (surface mount), package form factor (QFN), and regulatory compliance (ROHS3, MSL 1, REACH unaffected, EAR99).

Q: Are there package compatibility considerations between these parts?

A: The MP38900DL-B-Z uses a 20-VFQFN exposed pad package, while the NB503GQ-Z uses a QFN package. PCB layout modifications may be required to accommodate package differences. Detailed package dimensions and pinout information must be reviewed during design integration.

Q: Does the active product status of the NB503GQ-Z provide advantages over the obsolete MP38900DL-B-Z?

A: Yes. Active product status ensures manufacturer support, continued technical documentation availability, and sustained supply chain access. Obsolete products face eventual discontinuation and reduced support resources.

Q: Are regulatory certifications identical between these components?

A: Yes. Both parts maintain ROHS3 compliance, MSL Level 1 rating, REACH unaffected status, and EAR99 export classification, ensuring equivalent regulatory standing for design and supply chain purposes.

Q: What inventory considerations apply to these parts?

A: The MP38900DL-B-Z has 690 pieces in stock, while the NB503GQ-Z has 52,618 pieces available. The substitute provides substantially higher inventory availability, supporting production continuity and reducing supply chain constraints.