BU4231FVE-TR

Overview

The BU4231FVE-TR is a voltage detector IC from ROHM Semiconductor, designed for monitoring power supply voltages. It features an adjustable delay timer and operates within a reset active voltage range of 0.7 to 7 V. The typical under-voltage detection voltage is 3.1 V with a precision of ±1%. The device utilizes an open-drain output type and provides a low-active reset signal. It supports a maximum supply voltage of 7 V and functions across a temperature range of -40°C to 125°C. The circuit current is specified at 0.40 μA (ON) and 0.55 μA (OFF) at VDET=4.8V. Hysteresis voltage is defined as VDET x 0.05.

Feature Summary

• Adjustable delay timer functionality for customized reset timing
• Open-drain output configuration supporting low-active reset states
• High precision voltage detection with ±1% accuracy tolerance

Applications

• Power supply supervision in electronic systems
• Microprocessor reset circuit generation
• Battery voltage monitoring applications

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package integrity and RoHS compliance upon receipt. Cross-reference ordering part numbers against official manufacturer documentation to ensure correct variant selection. Validate thermal performance specifications against application requirements before integration.

Selection Notes

Select this component when precise voltage monitoring with customizable reset delays is required. Consider the open-drain output capability for flexible logic interfacing. Evaluate the wide operating temperature range for harsh environment suitability. Compare hysteresis characteristics against noise immunity needs in the target circuit design.

Part Context

This component belongs to the BU42xx series of voltage detectors manufactured by ROHM Semiconductor. It is part of a family offering various detection thresholds and delay options. The VSOF5 package provides a compact surface-mount solution suitable for space-constrained designs within the broader power management integrated circuit portfolio.

Replacement Considerations

BD5231G-1 is documented as a recommended replacement with similar specifications and same pinout compatibility.