MIC9131YM-TR

Overview

The MIC9131YM-TR is a current-mode PWM controller designed for telecom applications, efficiently converting -48V input voltages to standard logic levels. It operates with a switching frequency of 2.5 MHz and delivers a single output voltage ranging from 4.7V to 5V at up to 1A. The device functions within an extended temperature range of -40°C to +125°C and utilizes a 16-SOIC surface-mount package.

Feature Summary

• Current-mode PWM control architecture for efficient voltage conversion
• Optimized for stepping down -48V telecom rails to logic levels
• High-frequency operation supporting compact passive component selection

Applications

• Telecom power supply systems requiring -48V to logic level conversion
• Industrial equipment power distribution networks
• Communication infrastructure backend power modules

Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing. Confirm the manufacturer part number matches Microchip Technology exactly. Ensure the datasheet version aligns with the required electrical specifications for your design. Check RoHS compliance status if environmental regulations apply to your project.

Selection Notes

Select this component when designing systems that require reliable conversion of negative telecom voltages to positive logic supplies. Consider the 2.5 MHz switching frequency for balancing efficiency and EMI. Evaluate thermal performance within the specified -40°C to +125°C operating range for harsh environments.

Part Context

This part belongs to Microchip's specialized regulator family focused on telecom infrastructure. It complements other controllers in the series by addressing specific -48V input requirements. The SO-16 package allows for dense PCB layouts in communication hardware designs.

Replacement Considerations

Consult official Microchip documentation for direct cross-reference recommendations. Verify pin compatibility and electrical parameters before substituting with similar telecom controllers from other manufacturers.