MIC2184YM Equivalent & Substitute Parts

Part Overview

The MIC2184YM is a buck regulator positive output step-down DC-DC controller IC manufactured by Microchip Technology in a 16-SOIC package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The MIC2184YM provides transistor driver output with step-down topology, supporting a single output phase with 100% maximum duty cycle and clock synchronization capability.

Substiute Parts

MIC2184YM

Microchip TechnologyIn Stock: 2097MIC2184YM Datasheet

Current PartRFQ

MIC2168YMM

Microchip TechnologyIn Stock: 8563MIC2168YMM Datasheet

MFR RecommendedRFQ

MIC2194YM

Microchip TechnologyIn Stock: 5702MIC2194YM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MIC2184YM is determined by compatibility across the following critical parameters:

Primary Substitution Criteria:

• Manufacturer: Microchip Technology (maintained for design continuity and support)
• Output Type: Transistor Driver
• Function: Step-Down capability
• Output Configuration: Positive
• Topology: Buck or Buck-Boost (buck-boost includes buck functionality)
• Number of Outputs: 1
• Output Phases: 1
• Voltage - Supply (Vcc/Vdd): Range must encompass or overlap with 2.9V ~ 14V
• Duty Cycle (Max): Must support 100% or equivalent
• Operating Temperature: Must support -40°C minimum
• RoHS Status: ROHS3 Compliant
• Mounting Type: Surface Mount

Secondary Compatibility Factors:

• Switching Frequency: 400kHz baseline; higher frequencies acceptable for equivalent performance
• Package compatibility: Different packages acceptable if electrical specifications align
• Control Features: Enable function required; additional features acceptable

The substitute parts MIC2168YMM and MIC2194YM meet these criteria with variations in package type, switching frequency, and extended temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

MIC2168YMM Substitution: This part is manufacturer-recommended and carries active product status. It provides step-down buck regulation with identical supply voltage range compatibility (3V ~ 14.5V encompasses the MIC2184YM range). The MIC2168YMM operates at 1MHz switching frequency, offering improved efficiency in certain applications. The 90% maximum duty cycle is lower than the MIC2184YM's 100%, which may impact performance in applications requiring extended duty cycles. The MIC2168YMM includes synchronous rectifier functionality, providing efficiency advantages. Extended operating temperature range (-40°C ~ 125°C) exceeds the MIC2184YM specification. Package change from 16-SOIC to 10-MSOP requires PCB layout modification. All compliance certifications (ROHS3, MSL 1) are maintained.

MIC2194YM Substitution: This part is manufacturer-recommended and carries active product status. It provides both step-down and step-up/step-down (buck-boost) functionality, offering design flexibility beyond the MIC2184YM's step-down-only capability. Supply voltage range (2.9V ~ 14V) matches the MIC2184YM exactly. Switching frequency remains at 400kHz, maintaining design consistency. Maximum duty cycle of 100% matches the MIC2184YM specification. Extended operating temperature range (-40°C ~ 125°C) exceeds the MIC2184YM specification. Package reduction from 16-SOIC to 8-SOIC provides board space savings. All compliance certifications (ROHS3, MSL 1) are maintained.

Frequently Asked Questions (FAQ)

Q: Can MIC2168YMM replace MIC2184YM in all applications?

A: MIC2168YMM is electrically compatible for step-down buck regulation within the specified voltage range. However, the 90% maximum duty cycle versus the MIC2184YM's 100% may limit performance in applications requiring higher duty cycles. The package change from 16-SOIC to 10-MSOP requires PCB redesign. Verify duty cycle requirements and board layout constraints before substitution.

Q: What are the key differences between MIC2194YM and MIC2184YM?

A: MIC2194YM provides additional buck-boost topology capability beyond the MIC2184YM's step-down-only function. Both share identical supply voltage range (2.9V ~ 14V) and 100% duty cycle maximum. MIC2194YM operates in a smaller 8-SOIC package versus the 16-SOIC, reducing board footprint. MIC2194YM has extended temperature range (-40°C ~ 125°C versus -40°C ~ 85°C). Clock synchronization is not available on MIC2194YM.

Q: Why is package size different between these substitutes?

A: MIC2168YMM uses 10-MSOP packaging for a more compact footprint with reduced pin count. MIC2194YM uses 8-SOIC packaging, further reducing size and pin count while maintaining SOIC form factor compatibility with the original 16-SOIC. Package selection reflects functional integration and design optimization in each part. PCB layout modification is required when changing packages.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. MIC2184YM, MIC2168YMM, and MIC2194YM are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, ensuring equivalent environmental and regulatory compliance.

Q: Which substitute should I select for new designs?

A: Selection depends on application requirements. Choose MIC2194YM for step-down applications requiring compact packaging and maximum duty cycle support. Choose MIC2168YMM if higher switching frequency (1MHz) and synchronous rectifier efficiency are beneficial and duty cycle requirements do not exceed 90%. Both parts carry active product status, ensuring long-term availability and support.