BU4843FVE-TR

Supervisors Overview

The BU4843FVE-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for power supply support applications. It features a fixed under-voltage detection threshold of 4.3V with a precision of ±1%. The device operates within a reset active voltage range of 0.7V to 7V and utilizes an open-drain output type. It does not include a manual reset function or a watchdog timer. The component supports a maximum operating temperature of 125°C and a minimum of -40°C, housed in a VSOF-5 package.

Supervisors Feature Summary

• CMOS technology ensures low current consumption for efficient power management
• Fixed detection threshold provides reliable under-voltage monitoring without external adjustment
• Open-drain output configuration allows flexible interfacing with various logic levels

Supervisors Applications

• Power supply supervision in electronic systems
• Microprocessor reset circuits
• Battery-operated device protection

Supervisors Procurement Notes

Verify the obsolete status and availability through authorized distributors before procurement planning. Confirm that the VSOF-5 package dimensions match your PCB footprint requirements. Ensure compatibility with the 0.7V to 7V reset active voltage range for your specific circuit design. Check for RoHS compliance documentation if required for your manufacturing standards.

Supervisors Selection Notes

Select this component when a fixed 4.3V threshold is required for under-voltage detection. Consider the open-drain output for level shifting needs. Evaluate the thermal performance within the -40°C to 125°C range for your application environment. Compare against similar models like BD5243G-1 if adjustable delay or different packaging is preferred.

Supervisors Part Context

This part belongs to the BU48xx series of standard voltage detectors from ROHM Semiconductor. It is designed as a replacement for older discrete solutions, offering integrated monitoring in a compact surface-mount package. The series focuses on providing precise voltage detection with minimal static current draw.

Supervisors Replacement Considerations

The BD5243G-1 is listed as a recommended replacement with the same package and similar specifications. Verify pinout compatibility and electrical parameter alignment before substitution.