R1224N252G-TR-FE

Overview

The R1224N252G-TR-FE is a step-down DC/DC controller from Nisshinbo Micro Devices, designed for buck converter applications. It supports an input voltage range of 2.3 V to 18.5 V and operates with a fixed switching frequency of 300 kHz. The device integrates PWM and VFM control modes to optimize efficiency across varying load conditions. It is housed in a compact SOT-23-5 package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates Pulse Width Modulation (PWM) and Variable Frequency Mode (VFM) control strategies for adaptive load management.
• Supports wide input voltage ranges up to 18.5 V for flexible power supply integration.
• Operates at a fixed 300 kHz switching frequency to balance component size and performance.

Applications

• Battery-powered portable electronic devices
• General-purpose step-down power conversion circuits
• Industrial equipment requiring isolated or non-isolated DC regulation

Procurement Notes

Verify the specific suffix 'G-TR-FE' against the manufacturer's latest datasheet to confirm pinout compatibility and environmental compliance status. Ensure that the required output voltage setting aligns with the internal reference specifications documented in the official electrical characteristics table before finalizing procurement orders.

Selection Notes

Select this component when a wide input voltage range exceeding standard LDO capabilities is required. The integrated PWM/VFM mode selection makes it suitable for applications with significant load current variations. Consider the SOT-23-5 package constraints for thermal dissipation and PCB layout space limitations compared to larger packages.

Part Context

This part belongs to the R1224N series of switching controllers from Nisshinbo Micro Devices. The series focuses on efficient power management solutions using external MOSFETs. The R1224N252G-TR-FE specifically denotes the version optimized for the stated input range and control architecture within this product family.

Replacement Considerations

The R1224N362G-TR-FE is a confirmed substitute within the same series, sharing identical packaging and control features but differing in internal reference settings.