BU4228FVE-TR

Overview

The BU4228FVE-TR is a voltage detector IC from Rohm Semiconductor designed for supervisory circuit applications. It features an open-drain output and provides a low-active reset signal with adjustable delay time. The device monitors a single input channel with a typical threshold voltage of 2.8V and offers high accuracy of ±1%. It operates within a supply voltage range of 0.9V to 7V, consumes 550nA of operating current, and functions reliably across a temperature range of -40°C to +125°C in a VSOF-5 package.

Feature Summary

• Provides simple reset or power-on reset functionality with low-active output state
• Features adjustable reset delay timer for customizable timing control
• Delivers high detection accuracy with ±1% precision on the threshold voltage

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors as this part is obsolete. Confirm RoHS3 compliance and check for recommended replacements like BD5228G-1TR if new production is required. Ensure packaging specifications match design needs.

Selection Notes

Select this component for designs requiring precise voltage monitoring with adjustable timing delays. Consider the VSOF-5 package size and low quiescent current for space-constrained and energy-efficient applications. Verify compatibility with system voltage ranges before integration.

Part Context

This component belongs to the BU42xx series of voltage detectors manufactured by Rohm Semiconductor. These devices are engineered for reliable power management in consumer electronics and industrial equipment, offering compact surface-mount solutions for critical voltage supervision tasks.

Replacement Considerations

BD5228G-1TR is a manufacturer-recommended replacement with the same pinout configuration.