MIC5164YMM-TR

Overview

The MIC5164YMM-TR is a dual regulator controller designed for high-speed bus termination applications, specifically targeting DDR3 and GDDR3/4/5 memory systems. Manufactured by Microchip Technology under the Micrel brand, this component integrates two independent regulator controllers within a single package to simplify power management design. It operates in a surface-mount SOIC-8 or MSOP-10 form factor, depending on the specific suffix variant, ensuring compatibility with standard PCB layouts. The device supports JEDEC-compliant voltage levels required for modern memory interfaces.

Feature Summary

• Dual regulator architecture optimized for simultaneous control of VTT and VDDQ supplies
• Designed for high-speed bus termination in DDR3 and GDDR3/4/5 memory applications
• JEDEC-compliant operation ensures compatibility with standard memory interface requirements

Applications

• DDR3 memory subsystem power regulation
• GDDR3/GDDR4/GDDR5 video memory termination
• High-speed parallel bus termination circuits

Procurement Notes

Verify the exact package type (SOIC-8 vs MSOP-10) against the schematic, as the 'YM' suffix typically denotes an 8-pin SOIC while other variants may use MSOP. Confirm that the TR suffix indicates tape-and-reel packaging suitable for automated assembly. Ensure the revision level matches the design specification, as Microchip may update internal circuitry without changing the primary part number. Cross-reference the manufacturer date code to ensure compliance with current RoHS directives if environmental standards are critical to the project.

Selection Notes

Select this component when designing power stages for DDR3 or GDDR memory interfaces requiring precise VTT tracking. It is suitable for systems needing integrated dual-channel control to reduce board space and component count. Consider thermal performance and PCB layout constraints associated with the chosen package style. Verify input voltage ranges align with the system's main supply rails before finalizing the bill of materials.

Part Context

This part belongs to the Micrel/Microchip family of specialized power management ICs focused on memory interface support. It complements broader PMIC offerings by addressing specific high-speed digital signaling needs rather than general-purpose voltage regulation. The product line emphasizes low-cost, JEDEC-compliant solutions for consumer electronics and computing hardware manufacturers.

Replacement Considerations

Direct substitutes include other dual regulator controllers from Microchip or competitors like Texas Instruments designed for DDR3/VTT termination. Verify pinout compatibility and control loop characteristics before swapping. Generic LDOs cannot replace this function due to the specific tracking requirements of memory termination voltages.