BD4934FVE-TR

Overview

The BD4934FVE-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring supply voltages in electronic circuits. It features a CMOS output type and operates within a reset active voltage range of 0.8 to 6 V. The typical under-voltage detection voltage is 3.4 V with a precision of ±1%. The device includes a fixed reset delay timer and maintains a low circuit current of 0.23 μA in the off state at VS=4.8V. It is housed in a VSOF5 package and supports RoHS compliance.

Feature Summary

• CMOS output interface for direct logic integration
• Fixed reset delay timer for stable power-up sequencing
• Low power consumption suitable for battery-operated systems

Applications

• Portable electronic devices requiring voltage supervision
• Battery-powered equipment needing under-voltage protection
• General-purpose microprocessor reset circuits

Procurement Notes

Verify the specific ordering suffix and package variant against the official datasheet before procurement. Confirm that the component meets all required environmental and safety standards for the intended application. Check for any obsolescence notices or last-time-buy recommendations from the manufacturer to ensure long-term supply availability.

Selection Notes

Select this component when a fixed 3.4 V threshold with high accuracy is required. Ensure the operating voltage range covers the system's minimum and maximum supply levels. Consider the VSOF5 package size constraints and thermal dissipation requirements during PCB layout design.

Part Context

This part belongs to the BD49 series of voltage detectors from ROHM Semiconductor. It is specifically engineered for applications requiring precise voltage monitoring with minimal power draw. The series offers various threshold voltages to accommodate different system requirements while maintaining consistent performance characteristics across the family.

Replacement Considerations

BD5234G-1 is listed as a similar specification replacement option.