BU4931FVE-TR

Supervisors Overview

The BU4931FVE-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-channel supply voltages. It features a threshold voltage of 3.1 V with an accuracy of ±1%. The device operates within a power supply range up to 7 V and maintains a low static current of 450 nA. It utilizes a VSOF-5 surface-mount package and supports an operating temperature range from -40°C to +125°C. The component provides a CMOS output without manual reset or watchdog timer capabilities.

Supervisors Feature Summary

• CMOS output interface for direct logic integration
• High precision voltage detection with ±1% accuracy
• Ultra-low static current consumption for battery efficiency
• Extended industrial temperature rating for harsh environments

Supervisors Applications

• Portable electronic devices requiring low power supervision
• Battery-operated systems needing reliable voltage monitoring
• Industrial control circuits operating in extreme temperatures
• Consumer electronics with strict space constraints

Supervisors Procurement Notes

Verify component authenticity through authorized channels due to obsolete status. Confirm RoHS compliance documentation matches specific manufacturing batches. Ensure VSOF-5 footprint compatibility during procurement planning. Check for alternative sourcing options as standard distribution may be limited.

Supervisors Selection Notes

Evaluate the 3.1 V threshold against target system requirements. Consider the CMOS output drive capability for load conditions. Assess thermal performance within the specified -40°C to +125°C range. Compare static current specifications against other available voltage detectors for optimal power management.

Supervisors Part Context

This component belongs to the BU49 series of standard voltage detectors. It shares design characteristics with related models like BU4932FVE and BU4937FVE, differing primarily in threshold voltage settings. The VSOF-5 package offers a compact solution for modern surface-mount applications.

Supervisors Replacement Considerations

BD5231G-1 is listed as a recommended replacement with similar specifications. Note differences in package type (SSOP5 vs VSOF5) and output structure (open drain vs CMOS). Verify electrical parameter alignment before implementation.