BU4213F-TR

Overview

The BU4213F-TR is a voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply lines. It operates within a supply voltage range of 0.7 V to 7 V and features a typical under-voltage detection threshold of 1.3 V with ±1% precision. The device provides an open-drain output that activates in the low state when the monitored voltage falls below the threshold. It includes an adjustable reset delay timer but lacks manual reset, watchdog, or battery backup functions. The component supports surface-mount installation in an SOP-4 package and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Provides precise under-voltage detection with adjustable reset delay timing capabilities
• Features an open-drain output interface compatible with various logic families
• Operates efficiently with ultra-low current consumption suitable for battery-powered systems

Applications

• Portable electronic devices requiring reliable power supervision
• Battery-operated equipment needing low-voltage cutoff protection
• Embedded systems utilizing microcontrollers with specific reset requirements

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package integrity and RoHS compliance before integration. Cross-reference datasheet revisions to ensure parameter consistency. Validate supplier documentation against official ROHM records. Assess availability constraints for production planning purposes.

Selection Notes

Evaluate the 1.3 V threshold against system operating voltages to ensure accurate detection. Consider the adjustable delay timer for noise immunity requirements. Verify SOP-4 package compatibility with PCB layout constraints. Check thermal performance within the specified operating temperature range. Confirm open-drain output suitability for downstream circuit interfaces.

Part Context

This component belongs to the BU42xxxF series of supervisory circuits from ROHM Semiconductor. It is part of a family of voltage detectors offering various threshold options and packaging configurations. The BU4213F-TR specifically targets applications requiring compact solutions with precise voltage monitoring capabilities.

Replacement Considerations

The BD5213G-1 is identified as a similar level replacement with the same pinout configuration. Verify functional equivalence and package dimensions before substitution.