BU4325FVE-TR

Overview

The BU4325FVE-TR is a voltage detector manufactured by ROHM Semiconductor, designed for monitoring single power supply rails. It features an adjustable delay timer and provides a low-active reset output. The device operates within a wide temperature range of -40°C to 125°C and supports a maximum supply voltage of 7 V. Key electrical specifications include a typical under-voltage detection threshold of 2.5 V with ±1% precision. The circuit draws minimal current, specified at 0.40 μA (ON) and 0.55 μA (OFF) at VDET=4.8V. It utilizes a VSOF5 package.

Feature Summary

• Adjustable reset delay timer functionality
• Low active reset output state
• High detection accuracy with ±1% precision
• CMOS output interface

Applications

• Portable equipment power management
• Microprocessor system supervision
• Battery-operated device monitoring

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package integrity and pin alignment against the VSOF5 specification. Validate datasheet revisions and ensure compliance with RoHS standards before integration into production designs.

Selection Notes

Evaluate the required detection threshold against available options in the series. Consider the adjustable delay feature for noise immunity requirements. Assess the CMOS output drive capability against load requirements. Verify thermal performance within the specified operating temperature range.

Part Context

This component belongs to the BU43xxFVE series of voltage detectors from ROHM. It shares architectural similarities with other parts in the family, such as the BU4315FVE-TR and BU4932FVE-TR, differing primarily in detection thresholds and specific package variations.

Replacement Considerations

The BD5225G-1 is documented as a same-pinout replacement option. Verify compatibility regarding output type differences, as the substitute uses an open-drain configuration compared to the CMOS output of the BU4325FVE-TR.