BU4239FVE-TR

Overview

The BU4239FVE-TR is a voltage detector with an adjustable delay time, manufactured by ROHM Semiconductor. It features an open-drain output and operates within a reset active voltage range of 0.7 to 7 V. The typical under-voltage detection voltage is 3.9 V with a precision of ±1%. Circuit current is 0.40 μA (on) and 0.55 μA (off) at Vdet=4.8V. It lacks manual reset and watchdog timer functions. The device is supplied in a VSOF-5 package with taping packing type.

Feature Summary

• Adjustable reset delay timer functionality
• Open-drain output configuration
• Low power consumption design

Applications

• Portable equipment monitoring
• Battery-powered system supervision
• General-purpose voltage monitoring circuits

Procurement Notes

Verify the specific suffix FVE against the final sales documentation, as supply status may vary. Confirm RoHS compliance and lead times directly with authorized distributors or the manufacturer. Ensure the ordering part number matches the required tape and reel quantity for production integration.

Selection Notes

Select this component when an adjustable delay timer is required for voltage supervision. Compare the 3.9 V threshold and VSOF-5 package dimensions against alternative parts like the BD5239G-1 if pinout compatibility is critical. Evaluate the low standby current requirements for battery-operated designs.

Part Context

This part belongs to the BU42(43)xxF series of voltage detectors from ROHM Semiconductor. It is designed for supervisory applications requiring precise voltage monitoring with customizable timing delays. The VSOF-5 package offers a compact footprint suitable for space-constrained electronic devices.

Replacement Considerations

The BD5239G-1 is listed as a similar level replacement with the same pinout. Verify electrical parameter compatibility before substitution.