BU4931G-TR

Supervisors Overview

The BU4931G-TR is a CMOS voltage detector IC from ROHM Semiconductor, designed for supervisory circuit applications. It features a fixed under-voltage detection threshold of 3.1 V with a precision of ±1%. The device operates within a supply voltage range of 0.7 V to 7 V and supports an operating temperature range from -40°C to +125°C. It utilizes an SSOP-5 package and draws a typical circuit current of 0.55 µA at the maximum detection voltage. The output type is CMOS, providing a low active state reset signal without manual reset or watchdog timer functionality.

Supervisors Feature Summary

• CMOS voltage detection with high accuracy
• Wide operating temperature range
• Low power consumption design

Supervisors Applications

• Portable equipment power management
• Battery-operated systems monitoring
• General purpose voltage supervision

Supervisors Procurement Notes

Verify component authenticity through authorized channels due to NRND status. Confirm package integrity upon receipt as the SSOP-5 form factor requires careful handling. Check datasheet revisions for any parameter updates before final integration into new designs.

Supervisors Selection Notes

Select this component when a fixed 3.1 V threshold is required for single-input voltage monitoring. Consider the CMOS output compatibility with downstream logic circuits. Evaluate thermal performance within the specified -40°C to +125°C range for environmental suitability.

Supervisors Part Context

This part belongs to the BU4931G series of standard voltage detectors manufactured by ROHM Semiconductor. It is classified under PMIC - Power Management ICs and serves as a dedicated supervisory circuit for detecting under-voltage conditions in electronic systems.

Supervisors Replacement Considerations

BD5231G-1 is listed as a replacement with the same package but different output type (Open drain) and adjustable delay.