BU4226F-TR

Overview

The BU4226F-TR is a CMOS voltage detector IC from ROHM Semiconductor, designed for monitoring single-channel power supply voltages. It features an adjustable threshold voltage of 2.6 V with high accuracy of ±1%. The device operates within a supply voltage range of 0.9 V to 7 V and supports an adjustable reset delay time. It provides an open-drain output and functions across a wide temperature range from -40°C to +125°C. The typical operating current is 550 nA, ensuring low power consumption in standby modes.

Feature Summary

• CMOS technology enables ultra-low current consumption for extended battery life.
• Adjustable reset delay time allows customization of response timing.
• High detection voltage accuracy ensures reliable system supervision.
• Open-drain output facilitates flexible interface connections.

Applications

• Portable electronic devices requiring low-power voltage supervision
• Battery-operated systems needing under-voltage detection
• Embedded circuits utilizing adjustable reset delays

Procurement Notes

Verify the component status as Not Recommended for New Design (NRND) or Last Time Buy before finalizing designs. Confirm RoHS compliance details through official datasheets. Ensure the SOP-4 package variant matches your PCB footprint requirements. Check for any specific ordering suffixes that may affect availability or specifications.

Selection Notes

Select this component when a single-channel voltage monitor with adjustable delay is required. Consider the 2.6 V threshold and ±1% accuracy for precise supervision needs. Evaluate the open-drain output compatibility with downstream logic levels. Compare power consumption against other series members if lower current is critical.

Part Context

This part belongs to the BU42xx series of CMOS voltage detectors. It shares functional similarities with other models in the family but differs in package type and specific threshold settings. The series is characterized by low voltage operation and adjustable timing features for various supervisory applications.

Replacement Considerations

BD5226G-1 is a recommended replacement with the same pinout configuration. Verify electrical parameter compatibility, particularly regarding output current capabilities and operating voltage ranges, before substituting.