MIC9130BQS-TR

Overview

The MIC9130BQS-TR is a current-mode PWM controller designed to efficiently convert -48V telecom voltages to logic levels. It features a high voltage start-up circuit and operates within a wide input voltage range. The device is housed in a 16-pin QSOP package and includes integrated protection features such as undervoltage lockout and thermal shutdown. It is optimized for point-of-load applications in telecommunications infrastructure, providing stable regulation for downstream logic circuits.

Feature Summary

• Current-mode PWM control architecture for efficient voltage conversion
• High voltage start-up capability for direct -48V telecom interface
• Integrated thermal shutdown and undervoltage lockout protection

Applications

• Telecommunications power supplies
• -48V DC to logic level conversion
• Point-of-load regulation modules

Procurement Notes

Verify the specific suffix BQS-TR against the manufacturer's latest datasheet to confirm pinout compatibility and packaging type. Confirm that the component status is acceptable for new designs, as some distributors list this part as discontinued. Ensure the operating temperature range meets the specific environmental requirements of the target application before finalizing procurement.

Selection Notes

Select this component when designing systems requiring direct conversion from standard -48V telecom rails to lower logic supply voltages. The current-mode control offers stability under varying load conditions. Consider the 16-QSOP package size constraints during PCB layout. Verify that the required output current and efficiency specifications align with the controller's capabilities documented in the official electrical characteristics table.

Part Context

This part belongs to Microchip Technology's (formerly Micrel) line of telecom power management controllers. It is specifically engineered for the harsh electrical environments found in telecommunications equipment. The MIC9130 series provides a robust solution for stepping down high negative voltages commonly used in central office and remote terminal power distribution systems.

Replacement Considerations

Check for updated revisions from Microchip Technology. Cross-reference with other current-mode PWM controllers rated for -48V input if availability is an issue. Ensure any substitute maintains the same pinout or requires adapter solutions.