BD4950FVE-TR

Overview

The BD4950FVE-TR is a standard CMOS voltage detector IC manufactured by ROHM Semiconductor. It operates within a supply voltage range of 0.95 V to 10 V and features a typical undervoltage detection threshold of 4.95 V with an accuracy of ±1%. The device provides a CMOS output type and includes a reset delay timer of 100 µs. It does not support manual reset, watchdog timers, or battery backup switching. The component functions reliably across an operating temperature range from -40°C to +105°C and is housed in a VSOF-5 package.

Feature Summary

• CMOS output interface for direct logic integration
• High precision voltage detection with ±1% accuracy
• Compact surface-mount packaging for space-constrained designs

Applications

• Power supply monitoring in portable electronic devices
• Voltage supervision for microcontroller systems
• Battery-powered equipment power management

Procurement Notes

Verify the specific manufacturer datasheet for the BD4950FVE-TR to confirm current production status and RoHS compliance details. Check for any obsolescence notices or last-time-buy notifications as availability may vary. Ensure the VSOF-5 package dimensions match your PCB footprint requirements before finalizing procurement decisions.

Selection Notes

Select this component when a precise voltage threshold near 5V is required with high accuracy. The CMOS output allows for direct interfacing with digital logic without additional pull-up resistors. Consider the 100 µs reset delay for applications requiring stable power-up sequencing. Verify that the 10 V maximum supply voltage meets the system's peak input requirements.

Part Context

This part belongs to the BD49 series of supervisory circuits from ROHM Semiconductor. These components are designed for low-power applications requiring reliable voltage monitoring. The BD4950FVE-TR specifically targets systems needing a fixed detection voltage around 5V with tight tolerance specifications.

Replacement Considerations

The BD5250G-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 compatibility with existing circuit designs before substitution.