BU4329G-TR

Overview

The BU4329G-TR is a CMOS voltage detector IC from ROHM Semiconductor, designed for monitoring single power supply lines. It features an adjustable reset delay timer and operates within a detection voltage range of 0.7V to 7V. The typical under-voltage detection threshold is 2.9V with a precision of ±1%. The device supports a low active state output and consumes minimal current, specified at 0.40μA in the ON state and 0.55μA in the OFF state at Vdet=4.8V. It is housed in an SSOP-5 package and complies with RoHS standards.

Feature Summary

• CMOS voltage detector with adjustable output delay time
• High accuracy with ±1% detection voltage precision
• Low current consumption suitable for battery-powered applications
• RoHS compliant construction

Applications

• Processor supervisor circuits requiring precise voltage monitoring
• Battery-operated devices needing low standby current
• Systems utilizing adjustable reset timing for stable power-up sequences

Procurement Notes

Verify the specific ordering suffix and packaging configuration when sourcing. Confirm that the component status aligns with project requirements, as this part may be designated for existing customers only. Ensure compatibility with the intended SSOP-5 footprint and verify RoHS compliance documentation prior to final procurement decisions.

Selection Notes

Select this component when a fixed delay is insufficient and external timing components are undesirable. The adjustable delay feature allows customization via external resistors. Compare against the BD5229G-1 if a recommended-for-new-design alternative with similar pinout is required. Consider the specific 2.9V threshold and CMOS output characteristics against system logic levels.

Part Context

This part belongs to the BU43xx series of high-accuracy, low-current voltage detectors. It shares the SSOP-5 package and adjustable delay functionality with other members of the family, differentiated primarily by their specific detection voltage thresholds. The series is engineered for applications demanding reliable supervision with minimal power impact.

Replacement Considerations

The BD5229G-1 is listed as a similar level replacement with the same pinout and package. Verify functional equivalence regarding the adjustable delay mechanism and output type before substitution.