MIC2183YQS Equivalent & Substitute Parts

Part Overview

The MIC2183YQS is a buck regulator positive output step-down DC-DC controller IC manufactured by Microchip Technology in a 16-QSOP package. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The MIC2183YQS serves as a transistor driver for step-down topology applications with a single output phase and 100% maximum duty cycle capability.

Substiute Parts

MIC2183YQS

Microchip TechnologyIn Stock: 4511MIC2183YQS Datasheet

Current PartRFQ

MIC2168YMM

Microchip TechnologyIn Stock: 8563MIC2168YMM Datasheet

MFR RecommendedRFQ

MIC2193YM

Microchip TechnologyIn Stock: 2982MIC2193YM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MIC2183YQS are selected based on functional equivalence within the buck regulator controller category. The critical parameters determining substitution compatibility are:

• Output topology: Step-down buck configuration with positive output
• Synchronous rectifier capability: Required
• Supply voltage range overlap: Minimum 2.9V input support
• Duty cycle performance: Maximum duty cycle of 100% preferred for full compatibility
• Thermal operating range: Extended temperature support (-40°C minimum)
• Compliance certifications: ROHS3 and REACH status alignment

The MIC2168YMM and MIC2193YM both meet these functional requirements as Microchip Technology buck regulator controllers with active product status, providing viable alternatives to the obsolete MIC2183YQS.

Parameter Comparison

Engineering Selection Recommendations

MIC2193YM is the primary substitute for the MIC2183YQS. Both parts share identical supply voltage range (2.9V ~ 14V), maximum duty cycle (100%), and switching frequency capability (400kHz). The MIC2193YM maintains active product status with extended operating temperature range (-40°C ~ 125°C). Package transition from 16-QSOP to 8-SOIC requires PCB layout modification but provides functional equivalence for step-down buck regulation applications.

MIC2168YMM serves as an alternative substitute with active product status and extended thermal range (-40°C ~ 125°C). This part operates at higher switching frequency (1MHz) and reduced maximum duty cycle (90%), making it suitable for applications where the 100% duty cycle of the MIC2183YQS is not required. Package change to 10-MSOP necessitates board redesign.

Both substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory alignment with the original MIC2183YQS.

Frequently Asked Questions (FAQ)

Q: Can MIC2193YM directly replace MIC2183YQS without circuit modification?

A: Functional substitution is possible, but package change from 16-QSOP to 8-SOIC requires PCB layout redesign. Pin configuration and control feature compatibility must be verified against application schematics.

Q: What is the primary difference between MIC2193YM and MIC2168YMM?

A: MIC2193YM maintains 100% maximum duty cycle matching the original MIC2183YQS, while MIC2168YMM operates at 90% maximum duty cycle. MIC2168YMM offers higher switching frequency (1MHz vs 400kHz), beneficial for applications requiring smaller passive component sizing.

Q: Are both substitute parts ROHS3 compliant?

A: Yes, both MIC2193YM and MIC2168YMM are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the compliance profile of the MIC2183YQS.

Q: Does the supply voltage range differ between substitutes?

A: MIC2193YM matches the original range (2.9V ~ 14V). MIC2168YMM operates at 3V ~ 14.5V, requiring minimum 3V input instead of 2.9V. Verify application input voltage requirements before selection.

Q: What thermal performance improvement do the substitutes offer?

A: Both MIC2193YM and MIC2168YMM extend maximum operating temperature to 125°C (junction temperature), compared to 85°C (ambient temperature) for the obsolete MIC2183YQS, providing enhanced thermal margin for high-temperature applications.