BU4812F-TR

Supervisors Overview

The BU4812F-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring single power supply lines. It features an open-drain output with a typical under-voltage detection threshold of 1.2 V and a precision of ±1%. The device operates within a reset active voltage range of 0.7 V to 7 V and consumes a circuit current of 0.40 μA when active (at Vdet=4.8 V) and 0.55 μA when off. It includes hysteresis equal to Vdet x 0.05 and functions across a temperature range of -40°C to +125°C. Packaged in SOP-4, this component is classified as End-of-Life.

Supervisors Feature Summary

• Provides precise under-voltage detection with high accuracy for reliable system supervision
• Features low power consumption suitable for battery-operated applications
• Includes built-in hysteresis to prevent output oscillation during threshold transitions

Supervisors Applications

• Monitoring microprocessor power supplies
• Supervising battery-powered electronic devices
• Ensuring stable operation in portable consumer electronics

Supervisors Procurement Notes

Verify the End-of-Life status before procurement planning. Confirm that the SOP-4 package matches your PCB footprint requirements. Ensure the 1.2 V threshold aligns with your system's minimum operating voltage. Check RoHS compliance documentation if required for your manufacturing standards. Evaluate alternative components due to discontinuation.

Supervisors Selection Notes

Select this component only if the 1.2 V threshold meets your specific voltage monitoring needs. Consider the SOP-4 package size constraints for your design layout. Verify that the open-drain output configuration is compatible with your downstream logic levels. Assess the low standby current benefits against other available options in the market.

Supervisors Part Context

This part belongs to the BU4812 series of standard voltage detectors from ROHM Semiconductor. It is specifically engineered for simple supervisory tasks without complex timing or manual reset features. The series focuses on providing accurate voltage monitoring with minimal external component requirements.

Supervisors Replacement Considerations

BD5212G-1 is listed as a similar specification replacement with the same package type.