R1224N132H-TR-FE

Overview

The R1224N132H-TR-FE is a non-isolated buck DC/DC controller 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 or VFM switching modes at a frequency of 500 kHz, achieving a maximum duty cycle of 100%. It features a low quiescent current of 20 uA and functions within a temperature range of -40°C to +85°C. Packaged in SOT-23-5, it is designed for efficient step-down power conversion.

Feature Summary

• Supports both PWM and VFM control modes for optimized efficiency across varying load conditions
• Enables high efficiency through a maximum duty cycle of 100% for low dropout operation
• Maintains low power consumption with a quiescent current of 20 uA during operation

Applications

• Portable electronic devices requiring efficient step-down power management
• Battery-powered systems needing extended operational life
• General-purpose DC/DC conversion circuits in consumer electronics

Procurement Notes

Verify the specific suffix 'H' against official Nisshinbo documentation to confirm pinout and electrical characteristics match your design requirements. Ensure ordering quantities align with manufacturer reel specifications. Cross-reference the datasheet for thermal performance limits under your specific PCB layout conditions before finalizing procurement.

Selection Notes

Select this component when a wide input voltage range up to 18.5 V is required for buck applications. The 500 kHz switching frequency allows for smaller external passive components compared to lower-frequency alternatives. Consider the SOT-23-5 package size constraints and ensure the thermal dissipation capabilities of the target application board support the device's operating temperature range.

Part Context

This part belongs to the R1224N series of switching controllers from Nisshinbo Micro Devices. The series focuses on providing flexible voltage regulation solutions for portable and battery-operated equipment. The R1224N132H variant specifically addresses applications requiring robust input voltage handling and adjustable output levels within a compact footprint.

Replacement Considerations

Consult the official Nisshinbo replacement guide for direct equivalents. Verify compatibility regarding pin configuration, switching frequency, and control mode (PWM/VFM) when substituting.