BU4314F-TR

Overview

The BU4314F-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring power supply voltages. It features an adjustable reset delay time and operates within a supply voltage range of 0.7 V to 7 V. The device detects under-voltage conditions with a typical threshold of 1.4 V and maintains high accuracy of ±1%. It draws low operating current, specified as 550 nA maximum, and functions reliably across an extended temperature range from -40°C to +125°C. The component utilizes a VSOF-5 package for surface mount installation.

Feature Summary

• CMOS output type providing digital reset signals
• Adjustable reset delay timer functionality
• Low power consumption suitable for battery applications
• High detection accuracy for reliable system supervision

Applications

• Portable electronic devices requiring voltage supervision
• Battery-powered systems needing low quiescent current
• Industrial control circuits operating in extreme temperatures
• Consumer electronics with single-input voltage monitoring

Procurement Notes

Verify the specific suffix FVE versus F when sourcing, as package variations exist. Confirm availability status as some listings indicate discontinuation or last-time buy status. Ensure the ordering part number matches the required tape and reel quantity if applicable. Cross-reference the exact threshold voltage requirements against the datasheet specifications before finalizing procurement decisions.

Selection Notes

Select this component when a single-input voltage monitor with adjustable timing is required. The CMOS output interface suits digital logic integration. Consider the VSOF-5 package constraints for PCB layout. Verify that the 1.4 V detection threshold aligns with the target system's minimum operating voltage requirements. Ensure the operating temperature range meets the environmental conditions of the intended application.

Part Context

This part belongs to the BU42(43)xxFVE series of supervisory circuits. It is designed for low-voltage detection in portable and industrial applications. The series emphasizes low power consumption and compact packaging solutions for modern electronic designs requiring reliable power management supervision.

Replacement Considerations

The BD5214G-1 is documented as a replacement with the same pinout and package. Verify compatibility regarding output type differences, as the replacement uses open drain while the original uses CMOS. Check if the adjusted reset active voltage range and current consumption meet design requirements.