R1224N362F-TR-FE

Overview

The R1224N362F-TR-FE is a step-down DC/DC controller IC from the Nisshinbo R1224N series. It operates with an input voltage range of 2.3 V to 18.5 V and supports adjustable output voltages from 1 V to 18.5 V. The device utilizes PWM and VFM switching modes at a frequency of 180 kHz, achieving 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 a compact SOT-23-5 package.

Feature Summary

• Supports wide input voltage range up to 18.5 V for versatile power applications
• Integrates PWM and VFM control modes for optimized efficiency across load conditions
• Achieves high efficiency through 100% maximum duty cycle capability
• Features ultra-low operating supply current for energy conservation

Applications

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

Procurement Notes

Verify the specific suffix 'F' against official datasheets to confirm the fixed output voltage setting, as variations exist within the R1224N family. Ensure compatibility with the required SOT-23-5 footprint and thermal management requirements for the intended operating temperature range. Cross-reference the manufacturer part number directly with Nisshinbo Micro Devices documentation to avoid substitution errors.

Selection Notes

Select this controller when a non-isolated buck topology is required for inputs up to 18.5 V. The 180 kHz switching frequency balances component size and efficiency. Consider the 20 uA quiescent current for battery life optimization. Verify that the external components support the 1 V to 18.5 V adjustable output range if not using the fixed voltage variant.

Part Context

This component belongs to the R1224N series of switching controllers designed for step-down conversion. It is categorized under PMIC - Power Management ICs. The series offers various output voltage options differentiated by suffixes, all sharing the same core architecture and SOT-23-5 packaging for space-constrained designs.

Replacement Considerations

Direct substitutes include other R1224N variants with matching output settings, such as R1224N362G-TR-FE or R1224N102M-TR-FE, provided the electrical parameters align with the design requirements.