MIC2168ABMM Equivalent & Substitute Parts

Part Overview

The MIC2168ABMM is a buck regulator positive output step-down DC-DC controller IC manufactured by Microchip Technology. This device functions as a transistor driver for step-down topology applications with a single output phase. The MIC2168ABMM is currently discontinued at DiGi Electronics, making identification of suitable substitute components necessary for ongoing design support and production continuity. Equivalent parts must maintain functional compatibility across power management specifications and package requirements.

Substiute Parts

MIC2168ABMM

Microchip TechnologyIn Stock: 1121MIC2168ABMM Datasheet

Current PartRFQ

MIC2169YMM

Microchip TechnologyIn Stock: 25739MIC2169YMM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MIC2168ABMM is determined by strict alignment with the following critical parameters:

• Package Compatibility: 10-MSOP surface mount package with identical pinout and mechanical dimensions (0.118", 3.00mm Width)
• Functional Topology: Buck regulator with positive output step-down configuration
• Output Configuration: Single output, single phase transistor driver
• Supply Voltage Range: 3V ~ 14.5V input voltage compatibility
• Synchronous Rectifier: Integrated synchronous rectification capability
• Operating Temperature: -40°C ~ 125°C (TJ) thermal range
• Control Features: Current limit and enable functionality

The MIC2169YMM meets these substitution criteria while maintaining electrical and mechanical compatibility with the MIC2168ABMM footprint and functional requirements.

Parameter Comparison

Engineering Selection Recommendations

The MIC2169YMM is a direct functional substitute for the MIC2168ABMM based on matching package, topology, supply voltage range, and thermal specifications. Key selection considerations:

Product Status: The MIC2168ABMM is discontinued at DiGi Electronics. The MIC2169YMM is active and maintains 25,700 units in current inventory, ensuring supply chain continuity.

Compliance Advantage: The MIC2169YMM is ROHS3 compliant, whereas the MIC2168ABMM is RoHS non-compliant. This compliance difference may be relevant for applications subject to environmental regulations.

Operational Differences: The MIC2169YMM operates at 500kHz switching frequency compared to the MIC2168ABMM at 1MHz. The MIC2169YMM provides a maximum duty cycle of 92% versus 90% for the MIC2168ABMM. The MIC2169YMM includes current limit control but does not specify an enable feature.

Package and Thermal Compatibility: Both devices use identical 10-MSOP surface mount packaging with matching mechanical dimensions and unlimited moisture sensitivity rating. Operating temperature ranges are identical at -40°C ~ 125°C (TJ).

Frequently Asked Questions (FAQ)

Q: Can the MIC2169YMM directly replace the MIC2168ABMM in existing designs?

A: The MIC2169YMM is mechanically and functionally compatible with the MIC2168ABMM in the 10-MSOP package. Both devices share identical supply voltage ranges, thermal specifications, and buck topology architecture. Design validation is required to confirm compatibility with application-specific switching frequency and duty cycle requirements.

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

A: The MIC2169YMM operates at 500kHz switching frequency while the MIC2168ABMM operates at 1MHz. The MIC2169YMM also provides a higher maximum duty cycle (92% vs. 90%) and is ROHS3 compliant, whereas the MIC2168ABMM is RoHS non-compliant.

Q: Are the pin configurations identical?

A: Both the MIC2168ABMM and MIC2169YMM use the 10-MSOP package with identical mechanical dimensions (0.118", 3.00mm Width). Pinout compatibility must be confirmed against device datasheets for specific application requirements.

Q: Why is the MIC2168ABMM discontinued?

A: The MIC2168ABMM is listed as discontinued at DiGi Electronics. The MIC2169YMM is the active equivalent part from Microchip Technology with current inventory availability.

Q: Does the MIC2169YMM have an enable feature like the MIC2168ABMM?

A: The MIC2168ABMM specifies both current limit and enable control features. The MIC2169YMM specifies current limit control. Enable functionality differences must be evaluated against application requirements.

Q: Are there any environmental or compliance differences?

A: The MIC2169YMM is ROHS3 compliant, while the MIC2168ABMM is RoHS non-compliant. Both devices have identical moisture sensitivity levels (MSL 1, Unlimited) and REACH unaffected status.