BU4937FVE-TR

Supervisors Overview

The BU4937FVE-TR is a standard CMOS voltage detector IC manufactured by ROHM Semiconductor. It features a fixed under-voltage detection threshold of 3.7V with a precision of ±1%. The device operates within a reset active voltage range of 0.7V to 7V and utilizes a CMOS output type. Key electrical characteristics include a circuit current of 0.40μA (ON) and 0.55μA (OFF) at Vs=4.8V, with hysteresis defined as Vdet x 0.05. It supports an operating temperature range from -40°C to +125°C and is housed in a VSOF-5 package.

Supervisors Feature Summary

• CMOS output structure for direct logic interface compatibility
• Ultra-low current consumption design for battery-powered applications
• High accuracy voltage detection with ±1% precision
• Wide operating temperature range suitable for industrial environments

Supervisors Applications

• Portable electronic devices requiring low power supervision
• Battery-operated systems needing under-voltage protection
• Industrial control circuits monitoring supply stability
• Consumer electronics with strict power management requirements

Supervisors Procurement Notes

Verify the specific suffix and package variant against the official datasheet to ensure compatibility with existing PCB footprints. Confirm RoHS compliance status and check for any end-of-life notices or last-time-buy recommendations prior to finalizing procurement plans. Ensure the ordering part number matches the required tape-and-reel quantity specifications.

Supervisors Selection Notes

Select this component when a fixed 3.7V threshold is required with CMOS output drive capabilities. Consider the VSOF-5 package size constraints and the specific current consumption profile during both active and standby states. Evaluate the hysteresis characteristics relative to noise immunity needs in the target application environment.

Supervisors Part Context

This component belongs to the BU49xx series of standard voltage detectors from ROHM Semiconductor. The series offers various detection voltages in 0.1V steps and includes both open-drain and CMOS output options. The BU4937FVE-TR specifically targets applications requiring precise low-voltage monitoring with minimal power impact on the system.

Supervisors Replacement Considerations

BD5237G-1 is listed as a similar specification replacement with comparable detection voltage but different output type and package.