BU4937G-TR

Supervisors Overview

The BU4937G-TR is a single-channel voltage detector IC manufactured by Rohm Semiconductor, designed for supervisory circuit applications. It features a fixed detection threshold voltage of 3.7V with a precision of ±1%. The device operates within a supply voltage range of 0.7V to 7V and provides a CMOS output type. It supports a reset active state that is low-level effective. The component is available in an SSOP-5 package and is rated for an operating temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Provides precise voltage monitoring with a fixed 3.7V detection threshold
• Features CMOS output interface for direct logic integration
• Operates over a wide supply voltage range from 0.7V to 7V
• Supports extended industrial temperature environments up to 125°C

Supervisors Applications

• Portable electronic device power management
• Battery-operated system supervision
• General-purpose voltage monitoring circuits

Supervisors Procurement Notes

Verify the specific suffix G-TR against official Rohm documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer, as availability may vary. Ensure the procurement channel is authorized to guarantee component authenticity and traceability.

Supervisors Selection Notes

Select this component when a fixed 3.7V threshold is required for system supervision. Consider the CMOS output capability and wide operating voltage range for compatibility with various logic families. Evaluate the SSOP-5 package constraints against PCB layout requirements. Verify thermal performance needs against the specified operating temperature range before finalizing the design.

Supervisors Part Context

This part belongs to the BU49xx series of standard voltage detectors from Rohm Semiconductor. These devices are designed for low-power applications requiring reliable voltage supervision. The series typically offers fixed thresholds with high accuracy, making them suitable for protecting systems from under-voltage conditions in portable and industrial electronics.

Supervisors Replacement Considerations

BD5237G-1TR is listed as a similar specification replacement with the same package.