R1225N502A-TR-FE

Overview

The R1225N502A-TR-FE is a step-down DC-DC controller IC from Nisshinbo Micro Devices. It supports an input voltage range up to 18.5V and features PWM/VFM switching modes. The device operates with a maximum switching frequency of 360kHz. It utilizes CMOS technology and is housed in a PDSO6 package, specifically SOT-23-6W.

Feature Summary

• Supports combined PWM and VFM control modes for optimized efficiency across load ranges
• Designed for step-down DC-DC conversion applications
• Operates with high input voltage tolerance

Applications

• Step-down DC-DC power supply circuits
• Battery-powered portable devices
• General purpose voltage regulation systems

Procurement Notes

Verify the specific suffix 'A' against the datasheet to confirm pinout and electrical characteristics match the design requirements. Ensure the SOT-23-6W package dimensions align with the PCB footprint. Confirm RoHS compliance status through official manufacturer documentation before finalizing procurement.

Selection Notes

Select this component for applications requiring a compact solution for buck converter designs. Consider the 360kHz switching frequency for trade-offs between component size and noise. Evaluate the need for PWM/VFM hybrid operation to manage light-load efficiency effectively within the system architecture.

Part Context

This part belongs to the R1225N series of switching controllers. It is manufactured by Nisshinbo Micro Devices Inc., formed from the integration of New Japan Radio and Ricoh Micro Devices. The series focuses on power management integrated circuits for various electronic applications.

Replacement Considerations

The R1225N502K-TR-FE and R1225N332C-TR-FE are documented members of the same R1225N series. Verify if these variants offer compatible electrical specifications or package options suitable for direct substitution in existing designs.