AOZ1038PI_3 Equivalent & Substitute Parts

Part Overview

The AOZ1038PI_3 is a buck switching regulator IC from Alpha & Omega Semiconductor Inc., designed for positive adjustable step-down voltage regulation with 6A output current capability. This device operates across a 4.5V to 18V input range and delivers adjustable output voltage from 0.8V to 18V, making it suitable for various power management applications requiring compact form factors.

The AOZ1038PI_3 is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance of systems utilizing this component.

Substiute Parts

AOZ1038PI_3

Alpha & Omega Semiconductor Inc.In Stock: 645AOZ1038PI_3 Datasheet

Current PartRFQ

MP9186GQ-Z

Monolithic Power Systems Inc.In Stock: 19752MP9186GQ-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AOZ1038PI_3 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Function: Step-down buck topology
• Output configuration: Positive adjustable voltage regulation
• Output voltage range: Minimum 0.8V, maximum 18V
• Output current capability: 6A minimum
• Input voltage range: 4.5V minimum, 18V maximum
• Synchronous rectifier: Required

Mechanical Compatibility Criteria:

• Mounting type: Surface mount
• Package form factor: Consideration for PCB layout constraints

The MP9186GQ-Z meets all electrical compatibility requirements and operates within the specified parameter ranges. While the package differs (14-PowerVFQFN versus 8-SOIC), the electrical performance and functional characteristics align with the AOZ1038PI_3 specifications, making it a valid substitute for applications where package footprint can be accommodated.

Parameter Comparison

Engineering Selection Recommendations

The MP9186GQ-Z is a suitable substitute for the AOZ1038PI_3 based on the following engineering considerations:

Electrical Performance: The MP9186GQ-Z maintains all critical electrical specifications required for buck regulator functionality. Output voltage range, output current capability, and input voltage specifications are compatible with the original design requirements.

Product Availability: The MP9186GQ-Z is classified as active product status, ensuring ongoing availability and supply chain reliability compared to the obsolete AOZ1038PI_3.

Compliance & Certifications: Both parts carry identical REACH and ECCN classifications (REACH Unaffected, EAR99), and the MP9186GQ-Z is RoHS3 compliant, meeting modern regulatory requirements.

Operating Temperature: The MP9186GQ-Z provides an extended operating temperature range (-40°C to 125°C junction temperature) compared to the AOZ1038PI_3 (-40°C to 85°C ambient temperature), offering improved thermal performance margin.

Package Consideration: The MP9186GQ-Z uses a 14-PowerVFQFN package instead of the 8-SOIC package. PCB layout modifications are required to accommodate the different footprint and pin configuration.

Frequently Asked Questions (FAQ)

Q: Can the MP9186GQ-Z directly replace the AOZ1038PI_3 without circuit modifications?

A: The MP9186GQ-Z is electrically compatible and can perform the same buck regulation function. However, the different package type (14-PowerVFQFN versus 8-SOIC) requires PCB layout redesign. Pin configuration and placement differ, necessitating schematic and layout updates before implementation.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: step-down buck topology, positive adjustable output configuration, 0.8V to 18V output voltage range, 6A output current capability, 4.5V to 18V input voltage range, and synchronous rectifier presence. The MP9186GQ-Z meets all these criteria.

Q: Does the MP9186GQ-Z offer any performance advantages over the AOZ1038PI_3?

A: The MP9186GQ-Z operates at 500kHz switching frequency compared to 450kHz, and provides an extended operating temperature range to 125°C junction temperature. The part is actively manufactured, ensuring long-term availability.

Q: Are there any compliance or certification differences between these parts?

A: Both parts share identical REACH and ECCN classifications. The MP9186GQ-Z is RoHS3 compliant, meeting current regulatory standards. The AOZ1038PI_3 REACH status is unaffected, indicating no REACH substance of concern restrictions.

Q: What package considerations should be evaluated before selecting the MP9186GQ-Z?

A: The MP9186GQ-Z uses a 14-pin PowerVFQFN (3x3mm) package compared to the 8-pin SOIC package of the AOZ1038PI_3. Evaluate available PCB space, thermal management requirements, and manufacturing capabilities for the QFN package type before design implementation.