AOZ1016AI Equivalent & Substitute Parts

Part Overview

The AOZ1016AI is a buck switching regulator IC from Alpha & Omega Semiconductor Inc., designed for positive adjustable output applications. This device operates as a step-down converter with a single adjustable output, delivering up to 2A of output current across an input voltage range of 4.5V to 16V. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

AOZ1016AI

Alpha & Omega Semiconductor Inc.In Stock: 15205AOZ1016AI Datasheet

Current PartRFQ

AOZ6689CI

Alpha & Omega Semiconductor Inc.In Stock: 1196AOZ6689CI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AOZ1016AI is determined by the following critical parameters:

• Topology & Function: Buck (step-down) converter with positive adjustable output
• Input Voltage Range: Minimum 4.5V, maximum 16V or higher
• Output Voltage Range: Adjustable from 0.8V minimum
• Output Current Capability: Minimum 2A
• Mounting Type: Surface mount technology
• Compliance: ROHS3 compliant, REACH unaffected

The AOZ6689CI qualifies as a manufacturer-recommended substitute based on these parameters. Both devices operate within the same functional category (EZBuck™ series buck regulators) and share compatible electrical specifications for the critical operating parameters.

Parameter Comparison

Engineering Selection Recommendations

The AOZ6689CI is the manufacturer-recommended substitute for the obsolete AOZ1016AI. Both devices are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for equivalent component selection.

Key considerations for substitution:

Electrical Compatibility: The AOZ6689CI maintains the critical input voltage minimum of 4.5V and output voltage minimum of 0.8V. The substitute supports higher input voltage (18V vs. 16V) and delivers greater output current (3A vs. 2A), making it suitable for applications requiring the original 2A specification. However, the maximum output voltage is limited to 6V on the AOZ6689CI compared to 16V on the AOZ1016AI. Verify that your application's output voltage requirement does not exceed 6V.

Package Transition: The AOZ1016AI uses an 8-SOIC package, while the AOZ6689CI uses SOT-23-6. PCB layout and footprint modifications are required for this substitution.

Performance Enhancements: The AOZ6689CI includes an integrated synchronous rectifier and operates at 750kHz switching frequency, compared to 500kHz on the original part. These features improve efficiency and reduce component count. The extended operating temperature range (-40°C to 125°C) provides broader environmental compatibility.

Product Status: The AOZ1016AI is obsolete, while the AOZ6689CI is actively manufactured, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the AOZ6689CI directly replace the AOZ1016AI without circuit modifications?

A: Electrical substitution is possible if your application output voltage requirement does not exceed 6V. The AOZ6689CI supports the same minimum input and output voltages as the original part and delivers higher current capability. However, PCB layout changes are mandatory due to the different package form factors (8-SOIC to SOT-23-6).

Q: What is the maximum output voltage I can use with the AOZ6689CI?

A: The AOZ6689CI supports adjustable output voltage from 0.8V to 6V. If your application requires output voltages above 6V, this substitute is not suitable. Verify your design's output voltage specification before proceeding with substitution.

Q: Why does the AOZ6689CI have a lower maximum output voltage than the AOZ1016AI?

A: The AOZ6689CI is optimized for lower voltage output applications with higher current delivery (3A vs. 2A). This design trade-off reflects the different target application space for each device within the EZBuck™ product family.

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

A: Both the AOZ1016AI and AOZ6689CI are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution from a regulatory standpoint.

Q: What are the package differences, and do they affect my design?

A: The AOZ1016AI uses an 8-SOIC (0.154", 3.90mm width) package, while the AOZ6689CI uses SOT-23-6 Thin (TSOT-23-6). These are physically different packages requiring new PCB footprints and layout. The SOT-23-6 package is smaller, which may provide board space advantages in some designs.

Q: Does the higher switching frequency of the AOZ6689CI affect component selection?

A: The AOZ6689CI operates at 750kHz compared to 500kHz on the AOZ1016AI. Higher switching frequency typically allows for smaller external filter components (inductors and capacitors). Review your external component specifications to ensure compatibility with the increased switching frequency.

Q: Is the integrated synchronous rectifier on the AOZ6689CI beneficial?

A: Yes. The integrated synchronous rectifier on the AOZ6689CI improves efficiency by reducing conduction losses compared to the AOZ1016AI, which lacks this feature. This results in lower power dissipation and reduced thermal management requirements in many applications.