R1225N252D-TR-FE

Overview

The R1225N252D-TR-FE is a step-down DC/DC controller manufactured by Nisshinbo Micro Devices. It accepts an input voltage range of 2.3V to 18.5V and operates with a fixed switching frequency of 500kHz. The device supports Pulse Width Modulation (PWM) and Variable Frequency Mode (VFM) for efficient power management. It features a maximum duty cycle of 100% and provides a single output channel. The component is housed in a SOT-23-Wide-6 package and is designed for applications requiring compact power solutions.

Feature Summary

• Supports PWM and VFM control modes for optimized efficiency across varying load conditions
• Enables continuous conduction with a maximum duty cycle of 100%
• Operates within a wide input voltage range up to 18.5V

Applications

• Portable electronic devices requiring efficient step-down conversion
• Battery-powered systems utilizing PWM or VFM regulation
• Compact consumer electronics with space-constrained PCB layouts

Procurement Notes

Verify the specific suffix 'TR-FE' against official datasheets to confirm reel packaging and RoHS compliance status. Ensure the ordering quantity aligns with the manufacturer's standard reel size requirements. Cross-reference the Mouser part number 848-R1225N252D-TR-FE for accurate supply chain tracking. Confirm that the SOT-23-Wide-6 footprint matches your design constraints before finalizing procurement.

Selection Notes

Select this controller when a 500kHz switching frequency is required for smaller external passive components. Choose the R1225N series if input voltages exceed typical LDO limits but remain below 18.5V. Consider the SOT-23-Wide-6 package for thermal performance and board space optimization compared to standard packages. Verify compatibility with external MOSFETs for the step-down topology.

Part Context

This component belongs to the R1225N series of switching controllers from Nisshinbo Micro Devices. The series includes variants such as R1225N502K and R1225N332C, which share similar architectural features but differ in output voltage settings. These controllers are categorized under PMIC - Power Management ICs and are designed for general-purpose step-down applications in portable electronics.

Replacement Considerations

Direct substitutes include other R1225N series variants like R1225N502K-TR-FE or R1225N332C-TR-FE, provided the output voltage requirements match. Ensure replacement parts maintain the same SOT-23-Wide-6 package and 500kHz switching frequency for pin-to-pin compatibility.