SG3845D

DC DC Switching Controllers Overview

The SG3845D is a high-reliability isolated switching regulator manufactured by Microchip Technology. It operates as a current mode PWM controller supporting Buck, Flyback, and Forward topologies. The device features a fixed switching frequency of 500 kHz and a maximum duty cycle of 50%. It provides one output with a voltage of 5 V and an output current capability of 6 mA. Designed for surface mount installation in SOIC-14 packages, it functions within a temperature range of 0°C to +70°C.

DC DC Switching Controllers Feature Summary

• High-reliability isolated switching regulator design
• Current mode PWM control architecture
• Supports Buck, Flyback, and Forward topologies

DC DC Switching Controllers Applications

• Isolated DC/DC power conversion systems
• Off-line AC to DC switching converters
• Industrial power supply designs requiring high reliability

DC DC Switching Controllers Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to ensure correct package type and tape/reel configuration. Confirm RoHS compliance status through the manufacturer's latest datasheet or product change notification. Cross-reference the component marking code with the physical device to prevent counterfeit substitution during procurement.

DC DC Switching Controllers Selection Notes

Select this component when designing isolated power supplies requiring current mode PWM control. Ensure the application supports the 500 kHz switching frequency and 50% maximum duty cycle constraints. Verify that the required output current does not exceed the internal driver limits specified in the electrical characteristics table of the official datasheet.

DC DC Switching Controllers Part Context

The SG3845D belongs to Microchip's family of high-reliability switching regulators. These components are engineered for demanding environments where stable performance under isolation conditions is critical. The part integrates essential control logic for efficient power management in compact form factors suitable for modern electronic assemblies.

DC DC Switching Controllers Replacement Considerations

Consult official cross-reference lists for verified substitutes such as the SG3845DM variant. Ensure any replacement maintains compatibility with the SOIC-14 footprint and electrical specifications.