MIC2174C-1YMM Equivalent & Substitute Parts

Part Overview

The MIC2174C-1YMM is a Buck Regulator Positive Output Step-Down DC-DC Controller IC manufactured by Microchip Technology in the 10-MSOP package. This component functions as a transistor driver for step-down voltage conversion with a single positive output phase. The device is classified as obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

MIC2174C-1YMM

Microchip TechnologyIn Stock: 783MIC2174C-1YMM Datasheet

Current PartRFQ

MIC2176-2YMM

Microchip TechnologyIn Stock: 2217MIC2176-2YMM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MIC2174C-1YMM is determined by compatibility across the following critical parameters:

• Topology & Function: Both main and substitute parts must operate as buck regulator controllers with positive output configuration and single-phase output
• Package Compatibility: Identical 10-MSOP surface mount package ensures PCB layout compatibility
• Output Type: Transistor driver output type must be maintained
• Synchronous Rectifier: Presence of synchronous rectification capability
• Operating Temperature Range: Must support -40°C ~ 125°C (TJ) minimum
• Compliance Standards: RoHS3 compliance and MSL rating must be equivalent or superior

The MIC2176-2YMM qualifies as a direct substitute based on these parameters, despite differences in supply voltage range, switching frequency, and duty cycle specifications. These parameter variations reflect design improvements in the successor device and do not prevent functional substitution in applications designed for the MIC2174C-1YMM.

Parameter Comparison

Engineering Selection Recommendations

The MIC2176-2YMM is the manufacturer-recommended substitute for the obsolete MIC2174C-1YMM. Selection of this substitute is supported by:

• Product Status: The MIC2176-2YMM maintains active production status, ensuring long-term availability and supply chain continuity
• Compliance Alignment: Both devices maintain identical RoHS3 compliance and MSL ratings, satisfying regulatory and environmental requirements
• Functional Equivalence: Identical topology, output configuration, package, and mounting type ensure direct PCB compatibility
• Enhanced Specifications: The MIC2176-2YMM provides extended supply voltage range (4.5V ~ 75V) and increased maximum duty cycle (93%), offering greater design flexibility for new implementations

Frequently Asked Questions (FAQ)

Q: Can the MIC2176-2YMM be used as a direct replacement for the MIC2174C-1YMM on existing PCBs?

A: Yes. Both devices use the identical 10-MSOP surface mount package with matching pinout and functional topology. No PCB layout modifications are required.

Q: What are the key differences between these two devices?

A: The primary differences are supply voltage range (MIC2174C-1YMM: 3V ~ 40V; MIC2176-2YMM: 4.5V ~ 75V), switching frequency (270kHz vs. 200kHz), and maximum duty cycle (87% vs. 93%). These differences reflect design improvements in the successor device.

Q: Why is the MIC2174C-1YMM classified as obsolete?

A: The MIC2174C-1YMM has been discontinued by Microchip Technology. The MIC2176-2YMM represents the current-generation equivalent with enhanced performance characteristics.

Q: Are there any compatibility concerns when substituting the MIC2176-2YMM?

A: Applications designed for the MIC2174C-1YMM supply voltage range (3V ~ 40V) will operate within the MIC2176-2YMM specification window. The extended supply range of the substitute does not create compatibility issues for existing designs.

Q: Do both devices have the same moisture sensitivity rating?

A: Yes. Both the MIC2174C-1YMM and MIC2176-2YMM carry MSL rating 1 (Unlimited), indicating identical moisture handling requirements.

Q: Is the MIC2176-2YMM available in the same packaging options?

A: Yes. The MIC2176-2YMM is supplied in the 10-MSOP package, matching the original device specification.