R1240N001B-TR-FE

Overview

The R1240N001B-TR-FE is a synchronous step-down DC/DC converter manufactured by Nisshinbo Micro Devices Inc. It operates with an input voltage range of 4.5 V to 30 V and provides a single positive output adjustable from 800 mV to 15 V. The device delivers up to 1.2 A of output current at a fixed switching frequency of 1.25 MHz. It features a shutdown function and low operating supply current of 500 uA. The component is housed in a SOT-23-Wide-6 package and supports operation temperatures from -40°C to +85°C.

Feature Summary

• Integrated synchronous rectification for improved efficiency
• Fixed 1.25 MHz switching frequency for compact external component size
• Built-in shutdown control for power management

Applications

• Portable battery-powered electronic devices
• Industrial control systems requiring stable voltage regulation
• Communication equipment power supplies

Procurement Notes

Verify the exact part number suffix against official manufacturer documentation to ensure correct configuration. Confirm that the SOT-23-Wide-6 package matches your PCB footprint requirements. Check RoHS compliance status if required by your manufacturing standards. Ensure the supplier provides valid traceability documents for quality assurance purposes.

Selection Notes

Select this component when a wide input voltage range up to 30 V is required alongside high output current capability. The fixed 1.25 MHz frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider the thermal performance within the SOT-23-Wide-6 package for your specific load conditions.

Part Context

This part belongs to the R1240 series of step-down converters from Nisshinbo Micro Devices. The series is designed for applications needing efficient power conversion from higher voltage rails to lower logic or analog supply voltages. The R1240N001B variant specifically denotes the electrical characteristics and pinout configuration within this family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.