MIC5191YMM-TR

Overview

The MIC5191YMM-TR is an ultra high-speed linear regulator controller manufactured by Microchip Technology, housed in a 10-pin MSOP package. It utilizes an external N-Channel FET as the power device to handle fast load demands of microprocessor cores and ASICs. The device supports an input voltage range from 1.0V to 5.5V and provides a +1.0% initial output tolerance. It features adjustable output voltages down to 1.0V with dropout as low as 25mV at 10A. The controller offers large signal bandwidth exceeding 500kHz and PSRR greater than 40dB at 500kHz. It operates within a junction temperature range of –40°C to +125°C.

Feature Summary

• Ultra high-speed capabilities with large signal bandwidth exceeding 500kHz for rapid transient response
• Logic-controlled shutdown and current limit protection for enhanced system safety
• Stable operation with any type or value of output capacitor without requiring specific ESR characteristics
• Active filtering capability to remove switching frequency noise from input sources

Applications

• Distributed power supplies on circuit boards
• ASIC power supplies
• DSP, µP, and µC power supplies

Procurement Notes

Verify that the ordering suffix -TR corresponds to the tape and reel packaging format required for automated assembly processes. Confirm the specific MSOP-10 package variant matches the footprint constraints of the target PCB design. Ensure the component meets all relevant environmental compliance standards applicable to the final product deployment region.

Selection Notes

Select this controller when designing systems requiring extremely fast transient response times and high bandwidth control loops. It is suitable for applications where minimizing output capacitance is critical while maintaining clean output voltage under heavy dynamic loads. Consider the requirement for an external N-Channel MOSFET and appropriate VCC supply voltage for gate drive when integrating this component into the power stage.

Part Context

This component belongs to the MIC5191 family of ultra high-speed active filter and LDO controllers. It is designed to complement switching regulators by providing post-regulation or serving as a primary linear regulator for high-speed digital loads. The MSOP-10 package variant offers a compact surface-mount solution compared to larger leaded packages, facilitating integration into space-constrained modern electronic designs.

Replacement Considerations

MIC5191BML is a pin-compatible alternative available in a 10-pin MLF package.