BU4920G-TR

Supervisors Overview

The BU4920G-TR is a voltage detector IC from ROHM Semiconductor, designed for monitoring power supply voltages. It features a fixed threshold voltage of 2V with a precision of ±1%. The device operates within an input voltage range of 0.7V to 7V and supports a CMOS output type. It is housed in a compact SSOP-5 package, suitable for surface-mount applications. The component functions without manual reset or watchdog timer capabilities, relying on automatic detection. It complies with RoHS standards and is rated for industrial temperature ranges.

Supervisors Feature Summary

• Fixed 2V threshold voltage detection with high precision
• CMOS output interface for direct logic integration
• Compact SSOP-5 surface-mount packaging
• Wide operating voltage range supporting low-voltage systems

Supervisors Applications

• Microprocessor power supply supervision
• Portable battery-powered equipment monitoring
• Multi-output power supply tracking
• Test and measurement instrument voltage control

Supervisors Procurement Notes

Verify the NRND (Not Recommended for New Designs) status before procurement, as this indicates potential discontinuation. Confirm that the SSOP-5 package availability aligns with long-term production requirements. Ensure the 2V threshold meets specific circuit design needs, as it is fixed and non-adjustable. Check for alternative components if new design support is required.

Supervisors Selection Notes

Select the BU4920G-TR when a precise 2V detection threshold is required for voltage monitoring applications. Consider its CMOS output compatibility with standard logic families. Evaluate the SSOP-5 package size against board space constraints. Note that the absence of a watchdog timer necessitates external solutions if system recovery from faults is critical.

Supervisors Part Context

This component belongs to the BU49xx series of standard voltage detectors manufactured by ROHM Semiconductor. It is part of a family offering various threshold voltages for different power supply monitoring needs. The BU4920G-TR specifically addresses applications requiring a 2V detection point, providing a reliable solution for supervisory circuits in consumer and industrial electronics.

Supervisors Replacement Considerations

The BD5219G-1 is listed as a similar level replacement with the same SSOP-5 package. Verify electrical parameter compatibility, particularly the threshold voltage difference between 2.0V and 1.9V, before substitution.