BU4210FVE-TR

Overview

The BU4210FVE-TR is a voltage detector IC from ROHM Semiconductor, designed for monitoring single-channel power supply voltages. It features an adjustable delay timer and an open-drain output active low. The typical under-voltage detection threshold is 1.0V with a precision of ±1%. The reset active voltage range spans from 0.7V to 7V. Operating current is specified at 0.40μA (ON) and 0.55μA (OFF) when VDET=4.8V. Hysteresis is set at VDET x 0.05. The device operates within a temperature range of -40°C to 125°C and is housed in a VSOF-5 package.

Feature Summary

• Adjustable delay timer functionality for customizable reset timing
• Open-drain output configuration with low-active reset state
• High detection accuracy with ±1% precision on the threshold voltage

Applications

• Microprocessor system supervision
• Portable equipment power management
• Battery-operated device voltage monitoring

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance and package integrity upon receipt. Cross-reference datasheet revisions to ensure parameter consistency. Validate thermal performance against application requirements given the wide operating temperature range. Check for alternative recommended parts if long-term supply stability is required.

Selection Notes

Select this component for applications requiring precise voltage monitoring with flexible reset timing. The open-drain output allows easy interfacing with various logic families. Consider the low operating current for battery-sensitive designs. Ensure the VSOF-5 package fits the available PCB space. Verify that the 1.0V detection threshold aligns with the target system's minimum operating voltage.

Part Context

This part belongs to the BU42xxFVE series of voltage detectors. It is manufactured by ROHM Semiconductor. The device is classified as a simple reset/power-on-reset circuit. It is currently listed as obsolete or last-time buy status by major distributors.

Replacement Considerations

BD5210G-1 is a recommended replacement with the same pinout and similar electrical characteristics.