BU4936FVE-TR

Supervisors Overview

The BU4936FVE-TR is a CMOS voltage detector IC from ROHM Semiconductor, featuring a fixed detection threshold of 3.6V with ±1% accuracy. It operates within a supply voltage range of 0.7V to 7V and delivers a low-level active reset signal via a push-pull CMOS output. The device consumes approximately 550nA during operation and includes 5% hysteresis to prevent output oscillation. It is housed in a compact VSOF-5 package and supports an industrial temperature range from -40°C to +125°C.

Supervisors Feature Summary

• CMOS push-pull output structure providing robust drive capability without requiring external pull-up resistors.
• High detection accuracy of ±1% ensures precise monitoring of power supply rails for sensitive digital circuits.
• Integrated hysteresis function effectively suppresses output chattering caused by input noise or slow voltage transitions.

Supervisors Applications

• Microcontroller system power supervision
• Digital logic circuit reset generation
• Battery-powered device voltage monitoring

Supervisors Procurement Notes

Verify the specific suffix FVE against the official datasheet to confirm the VSOF-5 package type and tape-and-reel configuration. Confirm that the 3.6V threshold aligns with the target application requirements. Check current lifecycle status as obsolete parts may require alternative sourcing strategies.

Supervisors Selection Notes

Select this component when a fixed 3.6V threshold with high precision is required for systems operating up to 7V. The CMOS output is suitable for direct interfacing with standard logic families. Consider thermal dissipation limits if driving significant load currents in high-temperature environments.

Supervisors Part Context

This part belongs to the BU49xx series of standard voltage detectors designed for low-current consumption applications. It serves as a dedicated supervisor for maintaining system stability during power-up and brown-out events. The series offers various threshold options to accommodate different rail voltages.

Supervisors Replacement Considerations

The BD5236G-1 is listed as a similar specification replacement. Note that it utilizes an open-drain output and SSOP-5 package, requiring external pull-up components and layout adjustments compared to the push-pull BU4936FVE-TR.