AOZ1010AI_5 Equivalent & Substitute Parts

Part Overview

The AOZ1010AI_5 is a buck switching regulator IC from Alpha & Omega Semiconductor Inc., designed for step-down voltage conversion with positive adjustable output. It delivers 2A output current across a wide input voltage range of 4.5V to 16V, with adjustable output voltage from 0.8V to 16V. The device is housed in an 8-SOIC package and operates across the industrial temperature range of -40°C to 85°C.

The AOZ1010AI_5 is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Substiute Parts

AOZ1010AI_5

Alpha & Omega Semiconductor Inc.In Stock: 939AOZ1010AI_5 Datasheet

Current PartRFQ

MP2358DS-LF-Z

Monolithic Power Systems Inc.In Stock: 22649MP2358DS-LF-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AOZ1010AI_5 is based on the following critical parameters that must align between the original and substitute device:

• Package Compatibility: Both devices must use the 8-SOIC (0.154", 3.90mm Width) package to ensure PCB footprint compatibility without redesign.
• Output Current Rating: Substitute must deliver minimum 2A output current.
• Output Voltage Adjustability: Substitute must support adjustable positive output voltage configuration with a minimum output voltage at or below 0.8V.
• Input Voltage Range: Substitute input voltage range must encompass or exceed the original 4.5V to 16V specification.
• Operating Temperature Range: Substitute must support the full -40°C to 85°C operating temperature range.
• Topology: Substitute must be a buck (step-down) switching regulator with a single output.

The MP2358DS-LF-Z from Monolithic Power Systems Inc. meets all substitution criteria and is identified as the manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

The MP2358DS-LF-Z is the designated manufacturer-recommended substitute for the AOZ1010AI_5. Both devices share identical package geometry, output current rating, and operating temperature specifications, enabling direct PCB replacement without layout modifications.

The MP2358DS-LF-Z provides extended input voltage capability (up to 23V versus 16V), which offers additional design margin for applications with variable input sources. The minimum output voltage specification of the substitute (0.92V) is marginally higher than the original (0.8V); applications requiring output voltages below 0.92V must be evaluated for compatibility.

The switching frequency difference (370kHz versus 500kHz) affects output filter component selection and EMI characteristics. Applications with existing filter designs must account for this parameter variance during substitution.

Both devices carry legacy product status. The MP2358DS-LF-Z is classified as "Not For New Designs," indicating limited long-term availability. For new product development, evaluation of current-generation buck regulator alternatives is recommended.

The MP2358DS-LF-Z holds ROHS3 compliance and REACH Unaffected status, meeting current environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the MP2358DS-LF-Z be used as a direct replacement for the AOZ1010AI_5 without PCB modifications?

A: Yes. Both devices use the identical 8-SOIC (0.154", 3.90mm Width) package, enabling direct PCB footprint compatibility. No layout changes are required for package substitution.

Q: What is the impact of the 0.92V minimum output voltage on the MP2358DS-LF-Z compared to the 0.8V specification of the AOZ1010AI_5?

A: Applications requiring output voltages between 0.8V and 0.92V cannot be supported by the MP2358DS-LF-Z. Designs operating at or above 0.92V output voltage are fully compatible. Circuit evaluation is necessary for applications with lower output voltage requirements.

Q: How does the switching frequency difference (370kHz versus 500kHz) affect circuit design?

A: Switching frequency directly influences output filter inductor and capacitor selection. The lower frequency of the MP2358DS-LF-Z requires larger filter components to achieve equivalent ripple performance. Existing filter designs must be recalculated or redesigned for the substitute device.

Q: Is the extended input voltage range (23V maximum) of the MP2358DS-LF-Z beneficial for the AOZ1010AI_5 application?

A: The extended input voltage capability provides additional design margin and may accommodate applications with higher input voltage sources. However, if the original design operates within the 4.5V to 16V range, this extended specification does not provide functional advantage.

Q: What are the compliance and regulatory differences between the two devices?

A: The MP2358DS-LF-Z is ROHS3 compliant and REACH Unaffected. The AOZ1010AI_5 carries REACH Unaffected status. Both devices meet current environmental standards. The MP2358DS-LF-Z provides enhanced regulatory alignment for modern applications.

Q: Are there any moisture sensitivity considerations for the MP2358DS-LF-Z?

A: The MP2358DS-LF-Z has a Moisture Sensitivity Level (MSL) of 2A with a 4-week floor life, compared to the AOZ1010AI_5 MSL of 1 (unlimited). The substitute device requires controlled storage and handling within the specified moisture and time parameters.