BD4958FVE-TR

Overview

The BD4958FVE-TR is a CMOS voltage detector IC from ROHM Semiconductor, designed for precise power supply monitoring. It features a detection threshold of 5.8V with an accuracy of ±1%. The device operates within a supply voltage range of 0.95V to 10V and includes a fixed reset delay time of 100µs. It utilizes a VSOF-5 surface-mount package and supports an operating temperature range from -40°C to +105°C. The circuit draws low standby current, typically 0.60µA when active and 0.85µA in off-state at Vs=4.8V. It provides a low-active reset output without manual reset or watchdog timer functionality.

Feature Summary

• High-precision voltage detection with ±1% accuracy for reliable system supervision
• Ultra-low current consumption suitable for battery-powered applications
• CMOS output interface compatible with standard logic families
• Fixed reset delay ensures stable power-up sequencing

Applications

• Processor supervisor circuits requiring precise voltage thresholds
• Battery-operated devices needing low-power monitoring
• Industrial control systems with wide operating temperature ranges
• Portable electronics utilizing single-cell or multi-cell battery packs

Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm RoHS compliance and packaging specifications match project requirements. Check for obsolescence notices and last-time buy deadlines. Ensure storage conditions adhere to moisture sensitivity level guidelines. Validate pinout compatibility with existing PCB layouts before procurement.

Selection Notes

Select this component when a 5.8V detection threshold is required with high precision. Consider the VSOF-5 package for space-constrained designs. Evaluate the fixed 100µs reset delay against system timing requirements. Compare current consumption metrics with alternative supervisors if power efficiency is critical. Verify thermal performance within the specified operating temperature range.

Part Context

This part belongs to the BD49 series of voltage detectors, characterized by high accuracy and low current consumption. It complements other variants in the family offering different detection voltages and packages. The series is designed for general-purpose power management applications where reliable voltage monitoring is essential for system stability and safety.

Replacement Considerations

BD5258G-1TR is listed as a recommended replacement with similar specifications. Verify package differences (SSOP-5 vs VSOF-5) and electrical parameter alignment. Confirm availability and lead times for the substitute part. Assess mechanical fit and soldering process compatibility for the new package type.