MIC38C44BM-TR

AC DC Converters, Offline Switchers Overview

The MIC38C44BM-TR is a monolithic switching controller from Microchip Technology, designed for offline power supply applications. It operates as a current-mode PWM controller supporting multiple topologies including boost, buck, flyback, and forward configurations. The device features a maximum switching frequency of 500kHz and utilizes an 8-pin SOIC surface-mount package. It integrates essential protection mechanisms such as under-voltage lockout (UVLO), over-current protection (OCP), and over-temperature protection (OTP) to ensure reliable operation in high-reliability power systems.

AC DC Converters, Offline Switchers Feature Summary

• Integrates comprehensive protection functions including under-voltage lockout, over-current protection, and over-temperature protection.
• Supports versatile offline converter topologies such as boost, buck, flyback, and forward.

AC DC Converters, Offline Switchers Applications

• Offline AC-DC converters
• High-reliability power supply systems
• Versatile offline converter designs

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific manufacturer origin, as the MIC38C44 series has been produced by both Micrel Semiconductor and Microchip Technology following acquisitions. Confirm that the component matches the required 8-SOIC package and lead-free RoHS compliance status. Ensure the suffix -TR indicates the correct reel packaging quantity if applicable to your assembly process. Cross-reference the datasheet version to confirm pinout and electrical characteristics align with your design requirements.

AC DC Converters, Offline Switchers Selection Notes

Select this component when designing offline power supplies requiring a single-chip solution for multiple converter topologies. The current-mode control architecture offers improved line regulation and transient response compared to voltage-mode controllers. Consider the 500kHz maximum switching frequency for balancing efficiency and component size. Verify thermal management capabilities given the integrated over-temperature protection feature.

AC DC Converters, Offline Switchers Part Context

The MIC38C44 series belongs to the family of BiCMOS current-mode PWM controllers originally developed by Micrel Semiconductor. Following Microchip Technology's acquisition of Micrel, these components are now part of Microchip's PMIC portfolio. The series is characterized by its versatility in handling various offline power conversion tasks within a compact integrated circuit form factor.

AC DC Converters, Offline Switchers Replacement Considerations

Direct substitutes include other variants within the MIC38C44 family, such as MIC38C44AYM or MIC38C44YN, depending on the required package type (SOIC vs. DIP). Verify compatibility with existing board layouts and thermal constraints when transitioning between package styles.

AC DC Converters, Offline Switchers FAQ

What control mode does the MIC38C44BM-TR utilize?

It utilizes current-mode PWM control architecture.

Which protection features are integrated into the MIC38C44BM-TR?

The device includes under-voltage lockout (UVLO), over-current protection (OCP), and over-temperature protection (OTP).