BU4326G-TR

Overview

The BU4326G-TR is a CMOS low voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It operates within a supply voltage range of 0.7 V to 7 V and features an adjustable reset delay timer. The device provides a threshold detection voltage of 2.6 V with a precision of ±1%. It utilizes an SSOP-5 package and supports surface mount installation. The component functions without manual reset or watchdog timer capabilities, maintaining a low operating current of 550 nA. It is rated for temperatures between -40°C and +125°C.

Feature Summary

• Adjustable reset delay timer functionality
• CMOS output type with open drain configuration
• Low power consumption suitable for battery-operated systems

Applications

• Portable electronic devices requiring voltage supervision
• Battery-powered equipment monitoring
• General purpose supervisory circuits in consumer electronics

Procurement Notes

Verify the Not Recommended for New Designs (NRND) status before procurement. Confirm availability through authorized distributors as production may be limited. Ensure compatibility with existing PCB layouts using the SSOP-5 package. Check RoHS compliance documentation for regulatory requirements. Validate that the 2.6 V threshold meets system design specifications.

Selection Notes

Select this component when a fixed 2.6 V threshold is required with adjustable delay timing. Consider the SSOP-5 package constraints for space-limited designs. Evaluate the CMOS output drive capability against load requirements. Compare operating current specifications with other low-power alternatives if extended battery life is critical. Verify temperature range suitability for the intended environment.

Part Context

This part belongs to the BU42(43)xxG series of standard voltage detectors from ROHM Semiconductor. It is positioned as a cost-effective solution for basic voltage monitoring tasks. The series offers various threshold voltages to accommodate different logic levels. The BU4326G-TR specifically targets applications needing precise under-voltage detection with flexible reset timing control.

Replacement Considerations

BD5226G-1 is listed as a recommended replacement with similar pinout and package. Verify electrical parameter differences such as output type and current consumption during substitution.