R1224N122G-TR-FE

Overview

The R1224N122G-TR-FE is a non-isolated step-down DC/DC controller manufactured by Nisshinbo Micro Devices. It operates with an input voltage range of 2.3 V to 18.5 V and delivers a fixed output voltage of 1.2 V. The device supports a switching frequency of 180 kHz and achieves a maximum duty cycle of 100%. Quiescent current is specified at 20 uA. It functions within a temperature range of -40°C to +85°C and is housed in an SOT-23-5 package.

Feature Summary

• Supports PWM and VFM operation modes for efficient power management
• Enables high efficiency through 100% maximum duty cycle capability
• Maintains low power consumption with minimal quiescent current draw

Applications

• Battery-powered portable electronic devices
• General-purpose step-down power supply circuits
• Embedded systems requiring stable low-voltage regulation

Procurement Notes

Verify the specific suffix G indicates the 1.2 V fixed output configuration against official datasheets. Confirm the SOT-23-5 package dimensions match your PCB footprint requirements. Ensure the operating temperature range meets your environmental specifications. Check RoHS compliance status if required for your manufacturing process. Validate that the controller type aligns with your external switch selection.

Selection Notes

Choose this component when a fixed 1.2 V output is required from a wide input voltage range. It is suitable for applications prioritizing low quiescent current over variable output flexibility. Consider the 180 kHz switching frequency for balancing size and efficiency. Ensure external components support the controller's drive capabilities. Verify compatibility with your system's thermal constraints.

Part Context

This part belongs to the R1224N series of switching controllers designed for step-down applications. The series offers various fixed output voltages to suit different load requirements. These controllers are intended for use with external N-channel MOSFETs. They provide a compact solution for power management in space-constrained designs.

Replacement Considerations

Check for other variants in the R1224N series with different output voltages if 1.2 V is not required. Verify pin-to-pin compatibility with existing designs before substitution. Ensure the replacement maintains the same package type and electrical characteristics.