R1224N552M-TR-FE

Overview

The R1224N552M-TR-FE is a positive output step-down DC-DC switching controller manufactured by Nisshinbo Micro Devices Inc. It operates within an input voltage range of 2.3 V to 18.5 V and features a fixed switching frequency of 180 kHz. The device supports both PWM and VFM modes for efficient power management. It is housed in a compact SOT-23-5 package and is designed for operation across a temperature range of -40°C to +85°C. This component functions as a buck regulator with external transistor driver capabilities.

Feature Summary

• Supports wide input voltage range from 2.3 V to 18.5 V
• Integrates PWM and VFM control modes for optimized efficiency
• Fixed 180 kHz switching frequency for stable regulation

Applications

• Portable electronic devices requiring step-down conversion
• Battery-powered systems utilizing buck regulation
• General-purpose DC-DC converter circuits

Procurement Notes

Verify the specific suffix 'M' against official Nisshinbo documentation to confirm the exact output voltage setting, as ordering suffixes define functional parameters. Ensure compatibility with the required SOT-23-5 footprint and thermal requirements. Confirm that the 180 kHz frequency aligns with system noise constraints. Cross-reference the datasheet for any updates on RoHS compliance or environmental declarations prior to finalizing procurement specifications.

Selection Notes

Select this controller when a fixed 180 kHz frequency and a 2.3 V to 18.5 V input range are required. The SOT-23-5 package suits space-constrained designs. Consider the PWM/VFM hybrid operation for varying load conditions. Verify that the external transistor driver capability meets the current requirements of the target application compared to integrated solutions.

Part Context

This component belongs to the R1224N series of switching controllers from Nisshinbo Micro Devices. The series focuses on step-down DC-DC conversion with high efficiency. The R1224N552M-TR-FE variant specifically denotes the output voltage configuration and packaging type within this family of PMIC components.

Replacement Considerations

Consult the manufacturer's cross-reference list for direct substitutes. Variants such as R1224N252G-TR-FE share similar electrical characteristics but differ in output voltage settings defined by their suffixes. Ensure pinout and package dimensions match before substitution.