MIC5191BMM-TR

Overview

The MIC5191BMM-TR is an ultra high-speed linear regulator controller manufactured by Microchip Technology, utilizing a 10-pin MSOP package. It operates with an input voltage range of 1.0V to 5.5V and provides a +1.0% initial output tolerance. The device achieves dropout voltages down to 25mV at 10A and features a large signal bandwidth exceeding 500kHz. It includes logic-controlled shutdown, current limit protection, and maintains stability with any output capacitor across a junction temperature range of –40°C to +125°C.

Feature Summary

• Ultra high-speed capabilities handle fast load demands for microprocessor cores and ASICs
• Filters out switching frequency noise on the input while maintaining clean output voltage
• Logic controlled shutdown allows for low off-mode current states when disabled
• Current limit protection safeguards against overcurrent conditions

Applications

• Distributed power supplies
• ASIC power supplies
• DSP, µP, and µC power supplies

Procurement Notes

Verify the specific suffix 'BMM' corresponds to the MSOP-10 package variant as documented in official ordering information. Confirm that the component meets all required environmental standards and RoHS compliance specifications prior to integration into final designs.

Selection Notes

Select this controller when designing systems requiring high-speed transient response and active filtering of switching regulators. Ensure the external N-Channel MOSFET selection accounts for gate capacitance limits and thermal characteristics suitable for the intended load current and voltage differential.

Part Context

This component belongs to the MIC5191 family of ultra high-speed LDO controllers designed for demanding digital loads. It serves as a critical interface between switching power sources and sensitive downstream circuitry, enabling precise voltage regulation with minimal output capacitance requirements.

Replacement Considerations

MIC5191YML-T5

FAQ

What is the minimum output voltage achievable with the MIC5191?

The MIC5191 supports adjustable output voltages down to 1.0V using its internal 1.0V reference.

How does the MIC5191 handle load transients?

It utilizes a large signal bandwidth greater than 500kHz to respond quickly to load changes, minimizing voltage droop without requiring excessive output capacitance.