R1224N102E-TR-FE

Overview

The R1224N102E-TR-FE is a non-isolated step-down DC/DC controller IC from Nisshinbo Micro Devices. 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 control modes for efficient power management. It features a maximum switching frequency of 300 kHz and achieves a duty cycle up to 100%. The quiescent current is specified at 20 uA. The component is housed in a SOT-23-5 package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Supports both PWM and VFM control modes for optimized efficiency across varying load conditions
• Enables continuous conduction with a maximum duty cycle of 100 percent
• Operates with low quiescent current to minimize standby power consumption
• Accepts wide input voltage ranges suitable for diverse system power sources

Applications

• Buck DC/DC converter designs requiring adjustable output voltages
• Portable electronic devices utilizing battery power supplies
• General-purpose step-down power regulation circuits
• Embedded systems needing compact power management solutions

Procurement Notes

Verify the specific suffix E against official Nisshinbo documentation to confirm pinout and electrical characteristics. Ensure the SOT-23-5 package dimensions match the target PCB footprint. Confirm that the 300 kHz switching frequency aligns with external inductor and capacitor selections. Check RoHS compliance status through the manufacturer's latest release notes before finalizing procurement orders.

Selection Notes

Select this controller when a wide input voltage range up to 18.5 V is required. Consider the 20 uA quiescent current for battery-sensitive applications. Evaluate the SOT-23-5 package size constraints against available board space. Verify compatibility with external MOSFETs driven by the controller outputs. Ensure thermal performance meets requirements for the intended operating temperature range.

Part Context

This component belongs to the R1224N series of switching controllers designed for step-down applications. The series focuses on providing flexible voltage regulation options in small form factors. Other variants in the family may differ in fixed output voltages or control modes. The R1224N series targets cost-effective power management solutions for consumer and industrial electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Nisshinbo Micro Devices technical support for direct equivalents. Cross-reference with other buck controllers ensuring matching input voltage ranges and package types.