BU4225FVE-TR

Overview

The BU4225FVE-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 0.9 V to 7 V and features an adjustable reset delay timer. The device provides a low-active open-drain output with a typical threshold voltage of 2.5 V and ±1% precision. It consumes 550 nA in the off state at VDET=4.8 V and supports an operating temperature range from -40°C to +125°C. Packaged in a VSOF-5 surface-mount format, it lacks manual reset, watchdog, or battery backup functions.

Feature Summary

• Adjustable reset delay timer allows customization of response timing via external components.
• Low quiescent current consumption supports energy-efficient system designs.
• Open-drain output interface facilitates flexible logic level interfacing.

Applications

• Portable electronic devices requiring low-power supervision
• Battery-operated equipment needing under-voltage detection
• General-purpose microprocessor reset circuits

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 specifications against design requirements before integration. Check for alternative recommended parts if long-term availability is critical.

Selection Notes

Select this component when a low-cost, single-channel voltage supervisor with adjustable delay is required. Ensure the 2.5 V threshold aligns with the monitored rail. Consider the VSOF-5 package constraints for PCB layout. Verify that the absence of manual reset meets system safety needs.

Part Context

This part belongs to the BU42xxFVE series of voltage detectors from ROHM. It shares functional similarities with other members like BU4220FVE-TR and BU4227FVE-TR, differing primarily in threshold voltage. The series targets cost-sensitive applications requiring basic power management supervision without complex features.

Replacement Considerations

BD5225G-1 is listed as a same-pinout replacement option with similar specifications.