BU4926F-TR

Supervisors Overview

The BU4926F-TR is a CMOS voltage detector IC manufactured by ROHM Semiconductor. It features a fixed detection threshold voltage of 2.6V with an accuracy of 1%. The device operates within a supply voltage range of 0.9V to 7V and consumes a typical operating current of 550 nA. It provides a single input channel with a CMOS output type and lacks manual reset, watchdog timer, or battery backup switch functions. The component supports surface mount installation in a SOP-4 package and functions across a temperature range of -40°C to +125°C.

Supervisors Feature Summary

• CMOS voltage detection with fixed threshold
• Low power consumption design
• Single channel supervision capability

Supervisors Applications

• Power supply monitoring systems
• Embedded circuit supervision
• Microprocessor reset circuits

Supervisors Procurement Notes

Verify the specific ordering suffix and package variant against official ROHM documentation before procurement. Confirm that the SOP-4 package dimensions align with the target PCB footprint. Ensure the fixed 2.6V threshold meets the system requirements as adjustable variants are not available for this part number. Check RoHS compliance status directly from the manufacturer datasheet.

Supervisors Selection Notes

Select this component when a fixed low-voltage detection point near 2.6V is required for supervisory applications. The CMOS output interface suits digital logic integration without additional buffering. Consider the narrow operating voltage window and lack of delay timers when designing the reset sequence. Evaluate thermal performance within the specified industrial temperature range.

Supervisors Part Context

This voltage detector belongs to the BU49xx series of supervisory circuits designed for portable and battery-powered electronics. The family typically offers low quiescent current to extend battery life while providing reliable under-voltage detection. The BU4926F-TR specifically targets applications requiring precise monitoring at lower voltage levels compared to standard 3.3V or 5V detectors.

Supervisors Replacement Considerations

The BD5212G-1 is listed as a replacement with similar specifications but differs in package type and output configuration.