MIC38C44-1BM

AC DC Converters, Offline Switchers Overview

The MIC38C44-1BM is a BiCMOS current-mode PWM controller designed for fixed-frequency switching applications. It supports multiple converter topologies including Boost, Buck, Flyback, and Forward configurations. The device operates with a maximum switching frequency of 500 kHz and features a maximum duty cycle of 96%. It accepts an input voltage range from 10 V to 30 V, with a nominal operating point at 15 V. The integrated driver provides a peak output current capability of 0.5 A. The component is housed in a 14-pin SOIC package.

AC DC Converters, Offline Switchers Feature Summary

• Implements current-mode pulse width modulation control architecture
• Supports versatile power conversion topologies such as flyback and forward
• Features high-performance BiCMOS technology for improved efficiency

AC DC Converters, Offline Switchers Applications

• Offline switch mode power supplies
• AC/DC converter circuits
• Isolated power supply designs

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm pinout compatibility and electrical tolerances. Ensure the procurement source provides valid traceability for this legacy component series. Confirm RoHS compliance status through the manufacturer's latest environmental declarations before integration into production.

AC DC Converters, Offline Switchers Selection Notes

Select this controller for designs requiring fixed-frequency operation with current-mode regulation. It serves as a direct pin-compatible alternative to older bipolar 384x series devices while offering enhanced performance characteristics. Consider the 14-pin SOIC package constraints when designing the PCB layout for thermal management and signal integrity.

AC DC Converters, Offline Switchers Part Context

This component belongs to the MIC38C4x family of BiCMOS current-mode PWM controllers manufactured by Microchip Technology. The family includes variants like the MIC38C42, MIC38C43, and MIC38C45, which share similar control architectures but differ in specific pinouts or internal references. These devices are engineered to replace legacy bipolar controllers with modern semiconductor processes.

AC DC Converters, Offline Switchers Replacement Considerations

Officially documented substitutes include the MIC38C42, MIC38C43, and MIC38C45 within the same product family. Verify pin compatibility and specific electrical parameter differences before substituting.