BU4943G-TR

Supervisors Overview

The BU4943G-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply lines. It operates within a supply voltage range of 0.7 V to 7 V and features a typical threshold voltage of 4.3 V with a precision of ±1%. The device provides a CMOS output type and functions without manual reset or watchdog timer capabilities. It exhibits low static current consumption of 550 nA and supports an operating temperature range from -40°C to +125°C. Packaged in an SSOP-5 format, it is suitable for surface-mount applications requiring reliable supervision.

Supervisors Feature Summary

• CMOS output interface for direct logic compatibility
• High accuracy voltage detection with ±1% precision
• Low power consumption suitable for battery-operated systems

Supervisors Applications

• Portable electronic devices requiring voltage supervision
• Battery-powered equipment monitoring
• General-purpose power management circuits

Supervisors Procurement Notes

Verify the component status as Not Recommended for New Designs (NRND) before integration into new products. Confirm RoHS compliance details through official documentation. Ensure the SSOP-5 package dimensions match the target PCB footprint. Validate that the 4.3 V threshold aligns with system requirements. Check for any specific handling instructions regarding the reel packaging format.

Supervisors Selection Notes

Select this component when a fixed 4.3 V threshold is required for single-channel voltage monitoring. Consider the SSOP-5 package constraints for space-limited designs. Evaluate the CMOS output drive capability against load requirements. Assess the suitability of the wide operating temperature range for the intended environment. Compare static current specifications against other available voltage detectors in the portfolio.

Supervisors Part Context

This part belongs to the BU4943G series of standard voltage detectors from ROHM Semiconductor. It shares functional similarities with other members of the family but is distinguished by its specific 4.3 V threshold setting. The series focuses on providing accurate supervision for various digital and analog circuits. The TR suffix indicates tape-and-reel packaging for automated assembly processes.

Supervisors Replacement Considerations

The BD5243G-1 is listed as a similar specification replacement option. Verify package compatibility between SSOP-5 and alternative footprints. Confirm electrical parameter alignment, particularly threshold voltage and output type.