R1224N222E-TR-FE

Overview

The R1224N222E-TR-FE is a non-isolated Buck DC/DC controller manufactured by Nisshinbo Micro Devices. It operates with an input voltage range of 2.3 V to 18.5 V and provides a fixed output voltage of 2.2 V. The device supports switching frequencies of 180 kHz or 300 kHz, selectable via external components. It features a maximum duty cycle of 100% and low quiescent current of 20 uA. The controller is housed in an SOT-23-5 package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Supports PWM and VFM operation modes for efficient power management
• Enables high efficiency through 100% maximum duty cycle capability
• Designed for compact applications with low operating supply current

Applications

• Portable electronic devices requiring step-down voltage regulation
• Battery-powered systems needing efficient power conversion
• Embedded circuits utilizing external MOSFETs for buck topology

Procurement Notes

Verify the specific switching frequency requirement (180 kHz or 300 kHz) against the design specifications, as this parameter may vary based on external component selection or specific datasheet revisions. Confirm that the fixed 2.2 V output aligns with the target load requirements. Ensure compatibility with the SOT-23-5 footprint during PCB layout. Cross-reference the manufacturer's latest documentation for any updates regarding thermal performance or electrical characteristics.

Selection Notes

Select this component when a fixed 2.2 V output is required from an input range up to 18.5 V. It is suitable for designs prioritizing low standby current and compact SOT-23-5 packaging. Consider the external MOSFET drive requirements inherent to controller ICs. Evaluate the thermal constraints associated with the specified operating temperature range. This part is appropriate for non-isolated buck converter topologies in space-constrained environments.

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 using external power switches. The R1224N222E-TR-FE specifically denotes the fixed 2.2 V output variant within this family, sharing common control logic and interface standards with other models in the lineup.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Verify functional equivalence with other Nisshinbo R1224N variants if pinout and electrical parameters match. Consult official distributor databases for cross-references.