R1224N502G-TR-FE

Overview

The R1224N502G-TR-FE is a non-isolated step-down DC/DC controller from the Nisshinbo R1224N series, designed for PWM and VFM operation. It accepts an input voltage range of 2.3V to 18.5V and delivers an adjustable output voltage between 1V and 18.5V. The device operates at a switching frequency of 300kHz with a maximum duty cycle of 100%. It features a low operating supply current of 20µA and functions within a temperature range of -40°C to +85°C. Packaged in a compact SOT-23-5 (SC-74A) format, it serves as a power management IC for efficient voltage regulation.

Feature Summary

• Supports both Pulse Width Modulation (PWM) and Voltage Frequency Modulation (VFM) control modes for optimized efficiency across varying load conditions.
• Capable of 100% duty cycle operation to maintain stable output voltage during low input-to-output differential scenarios.
• Integrates ultra-low quiescent current consumption to minimize standby power loss in battery-powered applications.

Applications

• Portable electronic devices requiring efficient step-down voltage regulation
• Battery-operated systems needing extended operational life
• General-purpose power management circuits in consumer electronics

Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number R1224N502G-TR-FE with official Nisshinbo Micro Devices documentation. Ensure the package type matches the specified SOT-23-5 configuration. Confirm that the ordering suffix corresponds to the correct tape and reel packaging standard required for automated assembly processes.

Selection Notes

Select this controller when designing non-isolated buck converters requiring wide input voltage compatibility up to 18.5V. It is suitable for applications demanding high efficiency through adaptive PWM/VFM switching. Consider the 300kHz switching frequency for balancing component size and electromagnetic interference. Ensure external MOSFETs are rated for the required current and voltage levels to complement the controller's capabilities.

Part Context

This component belongs to the R1224N series of switching controllers manufactured by Nisshinbo Micro Devices. The series focuses on providing flexible DC/DC conversion solutions with minimal external component requirements. The specific model utilizes a standard SOT-23-5 package, aligning with industry trends for compact power management integrated circuits in space-constrained designs.

Replacement Considerations

Consult official substitution lists for compatible models within the R1224N family or equivalent step-down controllers from other manufacturers. Verify pinout compatibility and electrical parameter alignment before replacing the component in existing designs.