BU4234FVE-TR

Overview

The BU4234FVE-TR is a voltage detector IC manufactured by Rohm Semiconductor, designed for monitoring single power supply rails. It features an adjustable reset delay timer and an open-drain output active low. The typical under-voltage detection threshold is set at 3.4 V with a precision of ±1%. The device operates within a reset active voltage range of 0.7 V to 7 V. It consumes a circuit current of 0.40 μA when active (at Vdet=4.8V) and 0.55 μA in the off state. The component is housed in a VSOF-5 package and supports surface mount technology.

Feature Summary

• Adjustable reset delay timer functionality
• Open-drain output configuration with active low reset state
• High precision voltage detection capability

Applications

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

Procurement Notes

Verify the specific suffix FVE-TR against the manufacturer's latest documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with existing PCB footprints for the VSOF-5 package. Confirm RoHS compliance status through official datasheets before integration into production designs.

Selection Notes

Select this component when a precise 3.4 V detection threshold is required for single-supervision applications. The adjustable delay feature allows customization of reset timing relative to power-up or fault conditions. Consider the low operating current for battery-sensitive designs requiring minimal quiescent drain during normal operation.

Part Context

This part belongs to the BU42xx series of voltage detectors from Rohm Semiconductor. These devices are engineered for reliable supervision of digital logic systems. The series typically offers various threshold voltages and packaging options to suit different board space and voltage requirements in consumer and industrial electronics.

Replacement Considerations

BD5234G-1 is listed as a similar level replacement with the same pinout and package. Verify electrical parameter alignment and functional equivalence before substitution.