BU4345FVE-TR

Overview

The BU4345FVE-TR is a CMOS low voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features a typical under-voltage detection threshold of 4.5 V with a precision of ±1%. The device operates within a reset active voltage range of 0.7 V to 7 V and supports an adjustable reset delay timer. It utilizes a VSOF5 package and maintains a maximum operating temperature of 125 °C.

Feature Summary

• CMOS output type for low power consumption
• Adjustable reset delay timer functionality
• High accuracy voltage detection with ±1% precision

Applications

• Portable equipment power management
• Battery-operated device supervision
• Microprocessor reset circuits

Procurement Notes

Verify component authenticity through authorized channels as the part status is obsolete. Confirm package integrity and RoHS compliance against original datasheets. Check for alternative recommended parts if new design integration is required due to supply constraints.

Selection Notes

Select this component for designs requiring precise low-voltage monitoring with customizable timing delays. Ensure the VSOF5 package fits the PCB layout constraints. Verify that the 4.5 V threshold aligns with the system's minimum operating voltage requirements before finalizing the bill of materials.

Part Context

This component belongs to the BU42(43)xxFVE series of voltage detectors. It is specifically engineered for compact surface-mount applications where space efficiency and low standby current are critical. The VSOF5 package provides a small footprint suitable for dense board layouts in consumer electronics.

Replacement Considerations

BD5245G-1TR is listed as a similar level replacement with the same pinout.