BU4348FVE-TR

Overview

The BU4348FVE-TR is a voltage detector from the BU42(43)xxFVE series manufactured by ROHM Semiconductor. It features a typical under-voltage detection threshold of 4.8 V with ±1% precision. The device supports an adjustable reset delay timer and provides a CMOS open-drain output active low. It operates within a supply voltage range of 0.7 V to 7 V and consumes 0.40 μA in the on state and 0.55 μA in the off state at Vdet=4.8 V. The component is housed in a VSOF5 package and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Adjustable reset delay timer for customized timing control
• CMOS open-drain output configuration
• High accuracy voltage detection with ±1% precision

Applications

• Portable equipment requiring low power monitoring
• Battery-powered systems needing reliable voltage supervision
• General purpose supervisory circuits in consumer electronics

Procurement Notes

Verify current availability status as the part may be obsolete or restricted. Confirm package type VSOF5 and RoHS compliance against specific project requirements. Check for recommended replacement parts such as BD5248G-1 if sourcing new inventory is not feasible. Ensure ordering suffix matches desired packing quantity and type.

Selection Notes

Select this component when a fixed 4.8 V threshold with high precision is required. The adjustable delay feature allows flexibility in reset timing without external components. Consider the low operating current for battery-sensitive designs. Verify that the open-drain output interface is compatible with the target system logic levels.

Part Context

This part belongs to the BU42(43)xxFVE series of CMOS low voltage detectors. It is designed for applications requiring precise voltage monitoring with minimal power consumption. The VSOF5 package offers a compact footprint suitable for space-constrained PCB layouts. The series is known for its reliability in standard industrial and commercial environments.

Replacement Considerations

BD5248G-1 is listed as a similar level replacement with the same pinout and package.