MIC5190BMM-TR

Overview

The MIC5190BMM-TR is an ultra high-speed linear regulator controller manufactured by Microchip Technology, housed in a 10-lead MSOP package. It utilizes an external N-Channel FET as the power device to achieve signal bandwidths exceeding 500kHz with minimal capacitance. The device features a +1.0% initial output tolerance and supports adjustable output voltages down to 0.5V using its internal 0.5V reference. Operating parameters include an input voltage range of 0.9V to 5.5V and VCC supply ranges from 4.5V to 13.2V. Dropout voltage reaches 25mV at 10A, while PSRR exceeds 40dB at 500kHz. The junction temperature range spans from –40°C to +125°C.

Feature Summary

• Ultra high-speed operation with large signal bandwidth greater than 500kHz for fast load demands
• Logic controlled shutdown and current limit protection capabilities
• Stable with any output capacitor type or value without oscillation risks
• Filters out switching frequency noise on input with PSRR greater than 40dB at 500kHz

Applications

• Distributed power supplies for board-level distribution
• ASIC power supplies requiring low noise and high speed
• DSP, microprocessor, and microcontroller core power regulation

Procurement Notes

Verify component authenticity through authorized channels due to potential counterfeit risks. Confirm package integrity and pin alignment prior to assembly. Ensure static discharge precautions are followed during handling. Cross-reference datasheet revisions to match design requirements. Validate thermal performance under maximum load conditions before final deployment.

Selection Notes

Select this controller when driving external N-Channel MOSFETs for high-current applications. Ensure the chosen MOSFET has gate capacitance below 10nF for optimal slew rates. Verify that the VCC supply provides sufficient headroom above the gate-source threshold plus output voltage. Design compensation networks to maintain phase margin between 35 and 45 degrees for stability.

Part Context

This component belongs to the MIC5190 family of ultra high-speed linear regulators. It serves as a controller rather than a standalone regulator, requiring an external pass element. The B suffix indicates standard Pb-free manufacturing. The MM suffix denotes the 10-lead MSOP package variant. It complements the MIC5191 which targets higher output voltages.

Replacement Considerations

MIC5190YMM-TR is available as a direct substitute within the same package and specification profile.