R1224N102L-TR-FE

Overview

The R1224N102L-TR-FE is a non-isolated Buck DC/DC controller IC manufactured by Nisshinbo Micro Devices. It operates within an input voltage range of 2.3 V to 18.5 V and delivers a fixed output voltage of 1.0 V. The device supports a switching frequency of 180 kHz and functions across a temperature range of -40°C to +85°C. Packaged in an SOT-23-5 surface-mount format, it utilizes voltage mode control for step-down conversion.

Feature Summary

• Supports PWM/VFM operation modes for efficient power management
• Designed for non-isolated buck converter topologies
• Operates with low quiescent current for standby efficiency

Applications

• Portable electronic devices requiring compact power solutions
• Battery-powered systems needing stable low-voltage rails
• Embedded circuits utilizing external MOSFETs for current handling

Procurement Notes

Verify the specific suffix 'L' against official Nisshinbo documentation to confirm pinout and electrical characteristics, as variations exist within the R1224N series. Ensure compatibility with external switching components selected for the target application's current and voltage requirements before finalizing procurement.

Selection Notes

Select this component when a fixed 1.0 V output is required from inputs up to 18.5 V. Consider the 180 kHz switching frequency for filter size trade-offs. Verify that the SOT-23-5 package fits the PCB constraints and that the thermal performance meets the operating environment specifications.

Part Context

This part belongs to the R1224N series of step-down DC/DC controllers. These devices are designed to drive external high-side and low-side NMOS transistors, allowing for flexible power stage design while maintaining precise voltage regulation through integrated control logic.

Replacement Considerations

R1224N102E-TR-FE: Check datasheet for switching frequency differences (300 kHz vs 180 kHz) and ensure functional equivalence for the specific application timing requirements.