SG2844DM

AC DC Converters, Offline Switchers Overview

The SG2844DM is a current-mode PWM controller manufactured by Microsemi, designed for offline and DC-to-DC converter applications. It operates with a maximum switching frequency of 500kHz and supports an input voltage range from 12V to 25V, with a nominal rating of 15V. The device features a bipolar process and is housed in a 14-pin plastic SOIC (PDSO14) package. It provides a maximum output drive current of 1A and functions within an operating temperature range of -25°C to 85°C.

AC DC Converters, Offline Switchers Feature Summary

• Implements current-mode control schemes with pulse width modulation technology
• Includes internal under-voltage lockout and precision reference circuits
• Features a high-current totem pole output stage suitable for driving power MOSFETs

AC DC Converters, Offline Switchers Applications

• Offline AC-DC converters
• DC-to-DC step-down converters
• Flyback power supply designs

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific manufacturer designation, as Microsemi's semiconductor assets were acquired by Microchip Technology. Confirm that the component meets all required environmental compliance standards for your target market. Ensure the package type matches the PCB footprint requirements exactly. Check for any obsolescence notices or lifecycle status updates from the current supplier before finalizing procurement plans.

AC DC Converters, Offline Switchers Selection Notes

Select this controller when a robust current-mode solution is required for fixed-frequency applications. The 1A output capability supports moderate-power transformer drives. Consider the 14-pin SOIC package constraints against available board space. Verify that the 500kHz maximum frequency aligns with the desired magnetic component size and efficiency targets for the specific power stage design.

AC DC Converters, Offline Switchers Part Context

This component belongs to the SG284x series of switching controllers, which are widely used in industrial and commercial power supplies. The SG2844 variant specifically offers current-mode control, distinguishing it from voltage-mode counterparts in the same family. It serves as a core control element for regulating output voltage and current in isolated and non-isolated topologies.

AC DC Converters, Offline Switchers Replacement Considerations

Publicly confirmed substitute part numbers for the SG2844DM are not available in the provided documentation. Users should consult official distributor databases for cross-reference data.