BD4923FVE-TR

Overview

The BD4923FVE-TR is a CMOS voltage detector from ROHM Semiconductor, designed for monitoring single-input power supply lines. It operates within a maximum supply voltage of 10 V and features a typical threshold voltage of 2.3 V with 1% accuracy. The device provides a CMOS output type and includes a fixed reset delay time of 100 us. It functions without manual reset, watchdog timer, or battery backup switching capabilities. The component supports surface mount installation in a VSOF-5 package and maintains an operating temperature range from -40 C to +105 C.

Feature Summary

• CMOS output interface for digital logic compatibility
• Fixed 100 us reset delay timer for stable signal generation
• Single-channel under-voltage detection capability
• No manual reset or external timing components required

Applications

• Microprocessor system power supervision
• Battery-operated device voltage monitoring
• Embedded controller reset circuitry
• Portable electronic equipment power management

Procurement Notes

Verify the specific threshold voltage requirement against the datasheet, as the BD49 series contains multiple variants with different detection levels. Confirm that the VSOF-5 package dimensions match the target PCB footprint. Check current availability status, as this part may be subject to end-of-life restrictions or limited distribution channels.

Selection Notes

Select this component when a fixed 2.3 V detection level is required for systems operating up to 10 V. The CMOS output drives standard logic inputs directly. Consider the 100 us delay for applications tolerant of minor startup transients. Ensure the VSOF-5 package is suitable for the assembly process. Evaluate thermal dissipation requirements given the 210 mW power dissipation rating.

Part Context

This part belongs to the BD49 series of standard voltage detectors manufactured by ROHM Semiconductor. The series offers various threshold voltages to accommodate different rail monitoring needs. The BD4923FVE-TR specifically targets the 2.3 V detection point within this family, providing a cost-effective solution for basic power supervision tasks in consumer and industrial electronics.

Replacement Considerations

BD4923FVE is the non-tape version of the same component. BD5223G-1 is listed as a similar specification replacement with comparable threshold voltage but different package and output characteristics.