BD4847FVE-TR

Overview

The BD4847FVE-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-channel power supply voltages. It operates within a maximum supply voltage of 10 V and features a typical under-voltage detection threshold of 4.7 V with ±1% precision. The device utilizes a CMOS output type in an open-drain configuration, ensuring compatibility with various logic families. It includes a reset delay timer of 100 µs to prevent false triggering during power-up transients. The component supports a wide operating temperature range from -40°C to +105°C and consumes low static current, making it suitable for battery-powered or energy-efficient applications. It is housed in a compact VSOF-5 surface-mount package.

Feature Summary

• Provides precise under-voltage detection with high accuracy for reliable system supervision
• Features a built-in reset delay timer to ensure stable operation during power transitions
• Utilizes low-power CMOS technology for minimal static current consumption
• Offers flexible output compatibility through an open-drain configuration

Applications

• Portable electronic devices requiring battery voltage monitoring
• Embedded systems needing reliable power-on reset signals
• Industrial control circuits operating in extended temperature environments
• Consumer electronics utilizing single-supply architectures

Procurement Notes

Verify the specific suffix and package variant against the official datasheet before integration, as manufacturing updates may affect pinout or electrical characteristics. Confirm end-of-life status and last-time-buy availability through authorized distributors, as this component may be subject to discontinuation. Ensure compliance with RoHS directives and check for any regional distribution restrictions that might impact sourcing channels for this specific ROHM part number.

Selection Notes

Select this component when a fixed 4.7 V threshold is required for single-input voltage monitoring. Compare the 100 µs reset delay against application timing requirements to ensure adequate stabilization time. Evaluate the VSOF-5 package dimensions against PCB space constraints. Consider the open-drain output capability if level shifting or wired-OR configurations are necessary within the target circuit design.

Part Context

This part belongs to the BD48 series of standard voltage detectors from ROHM Semiconductor. It is functionally similar to other parts in the family but distinguished by its specific 4.7 V detection threshold and VSOF-5 packaging. The series is designed for general-purpose supervisory applications where cost-effective, low-power voltage monitoring is essential for maintaining system integrity during power fluctuations.

Replacement Considerations

The BD5247G-1 is documented as a recommended replacement with similar specifications. Verify package compatibility, as the substitute uses SSOP-5 instead of VSOF-5. Check that the reset delay characteristics and output drive capabilities meet the original design requirements before substituting.