R1224N182H-TR-FE

Overview

The R1224N182H-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 1.8 V. The device supports a switching frequency of 300 kHz and achieves a maximum duty cycle of 100%. It functions within a temperature range of -40°C to +85°C, consumes a quiescent current of 20 µA, and is housed in an SOT-23-5 package.

Feature Summary

• Supports PWM and VFM operation modes for efficient step-down conversion
• Enables high efficiency through 100% maximum duty cycle capability
• Features low power consumption with minimal quiescent current draw

Applications

• Portable electronic devices requiring efficient power management
• Battery-powered systems utilizing step-down voltage regulation
• Embedded circuits needing stable 1.8V logic supply rails

Procurement Notes

Verify the specific suffix 'H' against official datasheets to confirm pinout and electrical characteristics match your design requirements. Ensure compatibility with external MOSFETs and passive components specified for the 300 kHz switching frequency. Confirm RoHS compliance status and packaging reel specifications prior to integration.

Selection Notes

Select this component when a fixed 1.8V output is required from inputs up to 18.5V. Consider the SOT-23-5 package size constraints and the need for external switching elements. Evaluate thermal performance within the -40°C to +85°C operating range for your specific application environment.

Part Context

This part belongs to the R1224N series of switching controllers designed for buck converter topologies. It integrates control logic for driving external transistors, offering a compact solution for power management in space-constrained applications compared to fully integrated regulators.

Replacement Considerations

R1224N182E-TR-FE and R1224N182F-TR-FE are related variants within the same family. Verify if differences in suffixes indicate changes in internal reference or package variations before substitution.