R1224N182E-TR-FE

Overview

The R1224N182E-TR-FE is a PWM step-down DC/DC converter controller manufactured by Nisshinbo Micro Devices. It operates with a fixed output voltage of 1.8 V and supports an input supply range from 2.3 V to 18.5 V. The device utilizes a Buck topology with a switching frequency of 300 kHz and achieves a maximum duty cycle of 100%. It features a low operating supply current of 20 uA and functions within a temperature range of -40°C to +85°C. The component is housed in an SOT-23-5 surface-mount package.

Feature Summary

• Implements PWM-based step-down conversion for efficient power management
• Supports continuous 100% duty cycle operation for low dropout performance
• Designed for non-isolated applications with minimal quiescent current consumption

Applications

• Battery-powered portable electronic devices requiring stable 1.8 V logic levels
• Embedded systems utilizing Buck topology for voltage regulation
• Consumer electronics needing compact surface-mount power control solutions

Procurement Notes

Verify the specific ordering suffix and manufacturer part number against official Nisshinbo documentation to ensure compatibility with required output voltage and package specifications. Confirm RoHS compliance status through authorized distributors or direct manufacturer channels prior to procurement. Ensure that the selected variant matches the fixed 1.8 V output requirement for the intended application design.

Selection Notes

Select this controller when a fixed 1.8 V output is required without external adjustment capabilities. The 300 kHz switching frequency offers a balance between component size and efficiency. Consider the SOT-23-5 package constraints for thermal management and PCB layout. Verify that the input voltage range of 2.3 V to 18.5 V aligns with the system power source characteristics.

Part Context

This component belongs to the R1224N series of switching controllers from Nisshinbo Micro Devices. The series focuses on providing efficient power management solutions for various consumer and industrial applications. The R1224N182E-TR-FE specifically addresses the need for fixed-voltage buck conversion in space-constrained designs.

Replacement Considerations

Cross-reference with other R1224N variants for different output voltages if system requirements change. Check for updated revisions or alternative packages within the same family. Ensure any substitute maintains the 300 kHz frequency and SOT-23-5 footprint for direct compatibility.