BU4212FVE-TR

Overview

The BU4212FVE-TR is a voltage detector IC manufactured by Rohm Semiconductor, designed for monitoring single power supply rails. It features an adjustable reset delay timer and provides an open-drain output with low-active reset state. The device operates within a wide supply voltage range of 0.7V to 7V and supports a typical under-voltage detection threshold of 1.2V with ±1% precision. It is housed in a compact VSOF5 surface-mount package and functions reliably across an industrial temperature range from -40°C to +125°C.

Feature Summary

• Adjustable reset delay timer allows customization of response timing via external components
• Open-drain output configuration supports flexible interfacing with various logic families
• Low active reset state ensures clear signal indication during undervoltage conditions

Applications

• Portable electronic devices requiring reliable power supervision
• Battery-operated systems needing low-voltage cutoff protection
• Embedded controllers requiring configurable startup delays

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for end-of-life notifications prior to procurement. Ensure packaging specifications match production requirements. Validate datasheet revisions against current design needs.

Selection Notes

Select this component when adjustable delay functionality is required alongside precise voltage monitoring. Consider the VSOF5 package constraints for PCB layout. Evaluate circuit current consumption against system power budgets. Verify compatibility with target operating temperature ranges.

Part Context

This part belongs to Rohm's BU42 series of voltage detectors, which offer various threshold voltages and package options. The FVE suffix indicates the specific VSOF5 package type. This series is designed for general-purpose power management applications where size and precision are critical factors.

Replacement Considerations

The BD5212G-1 is documented as a recommended replacement with the same pinout and package. Verify electrical parameter alignment before substitution.