SG1825CJ-DESC

Overview

The SG1825CJ-DESC is a high-speed current-mode PWM controller manufactured by Microchip Technology. It operates with a maximum switching frequency of 1.5 MHz and supports an operating supply voltage up to 30 V. The device features a 22 mA operating supply current and delivers a peak output drive current of 0.2 A. It utilizes a 16-pin ceramic dual in-line package (CDIP) and includes two output interfaces for driving power stages.

Feature Summary

• High-speed current-mode pulse width modulation control architecture
• Hermetically sealed ceramic dual in-line packaging for reliability
• Integrated driver capable of sourcing 0.2 A output current

Applications

• Isolated step-down DC-DC converter designs
• Flyback switching power supply topologies
• Step-up/step-down converter applications

Procurement Notes

Verify the specific manufacturer designation, as the component appears under both Microsemi and Microchip Technology branding in public records. Confirm that the CDIP package matches the required hermetic sealing specifications for the intended environment. Ensure the 0.2 A output drive capability meets the gate charge requirements of the selected power switches.

Selection Notes

Select this controller when a high switching frequency up to 1.5 MHz is required to minimize passive component size. The current-mode control offers inherent line feed-forward and simple overcurrent protection. Verify compatibility with isolated feedback networks, as the device supports isolated switching regulator configurations.

Part Context

This component belongs to the SG1825 series of current-mode PWM controllers. It shares functional similarities with other devices in the family but is distinguished by its specific package type and drive current characteristics. The SG1825CJ variant provides a robust solution for demanding power conversion applications requiring high-frequency operation.

Replacement Considerations

Public confirmed substitute part numbers include SG1825CJ-883B.