MIC9131YQS-TR

Overview

The MIC9131YQS-TR is a current-mode PWM controller designed for telecom voltage regulation. It efficiently converts -48V telecommunications input voltages to lower logic levels. The device features a switching frequency of 2.5 MHz and supports boost and buck topologies. It provides one output with a maximum current of 1 A and a maximum duty cycle of 50%. The component operates within a temperature range of -40°C to +125°C and is housed in a 16-pin QSOP package.

Feature Summary

• Current-mode PWM control architecture for efficient power conversion
• Designed specifically for converting -48V telecom inputs to logic levels
• Supports both boost and buck converter topologies

Applications

• Telecommunications voltage regulation systems
• Converting -48V telecom rails to logic level supplies
• DC/DC power management in industrial telecom equipment

Procurement Notes

Verify the specific suffix 'YQS-TR' indicates the tape-and-reel packaging format, distinct from tube packaging. Confirm the 16-QSOP package type matches your PCB footprint requirements. Ensure the -48V input specification aligns with your system's telecom power infrastructure before procurement.

Selection Notes

Select this component when designing power stages that require stepping down or up from standard -48V telecom bus voltages. The 2.5 MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Ensure thermal management capabilities support the specified operating temperature range of -40°C to +125°C.

Part Context

This part belongs to the MIC9131 series of special purpose regulators manufactured by Microchip Technology. It is categorized under switching controllers and power management ICs (PMIC). The series is tailored for applications requiring robust performance in harsh environments typical of telecommunications infrastructure.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing design constraints if considering alternative current-mode PWM controllers from other manufacturers.