BU4326FVE-TR

Overview

The BU4326FVE-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring single power supply lines. It features an adjustable reset delay timer and operates within a maximum supply voltage of 7 V. The device provides a typical under-voltage detection threshold of 2.6 V with a precision of ±1%. It supports a reset active voltage range from 0.7 V to 7 V and delivers low-level output currents of 3.3 mA and high-level currents of 6.5 mA. Operating temperatures span from -40°C to +125°C, with a package size of 2.0x2.1 mm in VSOF-5 format.

Feature Summary

• CMOS output architecture providing defined logic levels for system interfacing
• Adjustable reset delay timer allowing customizable timing configurations via external components
• High accuracy voltage detection with ±1% precision for reliable supervision
• Wide operating temperature range suitable for industrial and commercial environments

Applications

• Microprocessor system reset circuits
• Battery-powered device supervision
• Portable equipment power management
• Industrial control system monitoring

Procurement Notes

Verify the specific suffix FVE against official ROHM documentation to confirm pinout and package dimensions, as variations exist within the series. Confirm availability status, as this component may be subject to last-time-buy restrictions or discontinuation. Ensure compatibility with existing PCB footprint and design rules before finalizing procurement decisions.

Selection Notes

Select this component when a CMOS output type is required rather than open-drain alternatives found in similar family members. Consider the adjustable delay feature if precise timing control is necessary without additional external logic. Evaluate the 7 V maximum supply limit to ensure it aligns with the target application's voltage rails and operational requirements.

Part Context

This part belongs to the BU42(43)xxFVE series of standard voltage detectors. It shares functional similarities with other models in the lineup but differs in package type and specific electrical characteristics. The VSOF-5 package distinguishes it from SOP-based variants like the BU4326F, offering different physical integration options for surface-mount designs.

Replacement Considerations

BD5226G-1TR is documented as a recommended replacement with same pinout functionality.