BU4947F-TR

Supervisors Overview

The BU4947F-TR is a CMOS voltage detector from ROHM Semiconductor designed for monitoring single power supply lines. It features a fixed threshold voltage of 4.7 V with a precision of ±1%. The device operates within a supply voltage range of 0.7 V to 7 V and provides a CMOS output type. It includes an adjustable reset delay timer and functions in the low active state without manual reset or watchdog capabilities. The component supports surface mount installation in an SSOP-5 package, ensuring reliable performance across industrial temperature ranges.

Supervisors Feature Summary

• CMOS output interface for direct logic compatibility
• Adjustable reset delay timer functionality
• Single input voltage monitoring capability
• Low power consumption design

Supervisors Applications

• Portable electronic devices requiring voltage supervision
• Battery-powered systems needing under-voltage detection
• Industrial control circuits with strict voltage limits
• Consumer electronics with microprocessor reset requirements

Supervisors Procurement Notes

Verify current availability status as the component may be discontinued or not recommended for new designs. Confirm package type and pinout compatibility during integration. Check RoHS compliance documentation for regulatory adherence. Ensure ordering suffix matches required tape-and-reel specifications. Validate datasheet revisions against existing design files.

Supervisors Selection Notes

Select this part when a fixed 4.7 V threshold is required for system supervision. Consider the SSOP-5 package constraints for PCB layout. Evaluate the CMOS output drive strength against load requirements. Compare power consumption metrics with alternative detectors if battery life is critical. Verify thermal performance within the specified operating temperature range.

Supervisors Part Context

This component belongs to the BU49 series of standard voltage detectors manufactured by ROHM Semiconductor. It serves as a supervisory circuit for maintaining system stability by detecting under-voltage conditions. The series typically offers various threshold options and packaging configurations to suit different application needs while maintaining consistent electrical characteristics.

Supervisors Replacement Considerations

BD5247G-1 is listed as a similar specification replacement option. Verify package compatibility and electrical parameter alignment before substitution. Ensure the alternative part meets all original design requirements including threshold voltage and output type.