MIC2183YQS-TR Equivalent & Substitute Parts

Part Overview

The MIC2183YQS-TR is a Buck Regulator Positive Output Step-Down DC-DC Controller IC manufactured by Microchip Technology, housed in a 16-QSOP package. This component functions as a transistor driver for step-down topology applications with a single output phase. The part is currently classified as obsolete, making identification of suitable equivalent and substitute parts essential for design continuity and procurement planning. Substitute parts must maintain functional compatibility while accommodating differences in package form factor, thermal specifications, and control feature sets.

Substiute Parts

MIC2183YQS-TR

Microchip TechnologyIn Stock: 775MIC2183YQS-TR Datasheet

Current PartRFQ

MIC2168YMM-TR

Microchip TechnologyIn Stock: 1089MIC2168YMM-TR Datasheet

MFR RecommendedRFQ

MIC2193YM-TR

Microchip TechnologyIn Stock: 770MIC2193YM-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MIC2183YQS-TR is determined by functional equivalence across the following critical parameters:

• Topology & Function: All substitutes must maintain buck regulator step-down topology with transistor driver output
• Output Configuration: Single output, positive polarity required
• Supply Voltage Range: Acceptable overlap with 2.9V ~ 14V input range
• Synchronous Rectifier: Must be present for equivalent performance
• Switching Frequency: Must support operation within or compatible with 200kHz–400kHz range
• Duty Cycle: Maximum duty cycle of 90% or higher acceptable
• Thermal Rating: Operating temperature range must accommodate -40°C minimum; higher maximum ratings acceptable
• Compliance: RoHS3 compliance and REACH unaffected status required
• Mounting & Package: Surface mount technology; package form factor differences acceptable with PCB layout adaptation

The two identified substitutes—MIC2168YMM-TR and MIC2193YM-TR—meet these functional criteria while differing in package configuration, frequency capability, and thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

MIC2168YMM-TR is suitable for applications where higher switching frequency (1MHz) is beneficial for reducing output filter size and improving transient response. This part is in active production status, ensuring long-term availability. The 90% maximum duty cycle is acceptable for most step-down applications. The 10-MSOP package is smaller than the original 16-QSOP, requiring PCB layout modification. MSL rating of 1 provides unlimited shelf life stability. The absence of clock sync capability may require design review if frequency synchronization to external clocks is required.

MIC2193YM-TR maintains identical supply voltage range and maximum duty cycle (100%) as the original MIC2183YQS-TR, minimizing design parameter changes. This part is in active production status. The 8-SOIC package is smaller than the original 16-QSOP but maintains similar width (0.154"), simplifying PCB layout adaptation. Operating temperature range extends to 125°C, providing thermal margin. MSL rating of 3 requires controlled storage conditions (168-hour limit after moisture exposure). The absence of clock sync capability applies to this substitute as well.

Both substitutes are RoHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can MIC2168YMM-TR and MIC2193YM-TR be used interchangeably with MIC2183YQS-TR?

A: Both parts are functionally equivalent buck regulator controllers with identical topology and output configuration. However, they differ in package form factor, switching frequency, and duty cycle specifications. Selection depends on specific application requirements for frequency, duty cycle, and thermal performance. PCB layout modification is required for either substitute due to different package configurations.

Q: What is the primary difference between the two substitute parts?

A: MIC2168YMM-TR operates at 1MHz switching frequency with 90% maximum duty cycle, suitable for applications requiring compact filtering. MIC2193YM-TR operates at 400kHz with 100% maximum duty cycle, matching the original part's frequency and duty cycle specifications more closely. MIC2193YM-TR is preferred when design parameters must remain unchanged from the original MIC2183YQS-TR.

Q: Does the absence of clock sync in the substitute parts affect compatibility?

A: Clock sync capability is not present in either substitute. If the original design requires external frequency synchronization, design review is necessary to determine if operation without clock sync is acceptable for the application.

Q: What are the package considerations for substitution?

A: The original MIC2183YQS-TR uses 16-QSOP packaging. MIC2168YMM-TR uses 10-MSOP (smaller footprint), and MIC2193YM-TR uses 8-SOIC (smaller pin count). Both substitutes require PCB layout redesign and schematic review to accommodate different pin configurations and package dimensions.

Q: Are there storage or handling differences between these parts?

A: MIC2183YQS-TR and MIC2168YMM-TR have MSL rating of 1 (unlimited shelf life). MIC2193YM-TR has MSL rating of 3, requiring controlled storage with a 168-hour limit after moisture exposure. This affects procurement, storage, and assembly planning.

Q: Are all three parts RoHS3 compliant?

A: Yes, MIC2183YQS-TR, MIC2168YMM-TR, and MIC2193YM-TR are all RoHS3 compliant and REACH unaffected, meeting equivalent environmental and regulatory standards.