BU4341F-TR

Overview

The BU4341F-TR is a CMOS voltage detector IC from ROHM Semiconductor, designed for supervisory circuit applications. It features an adjustable reset delay timer and operates within a supply voltage range of 0.7 V to 7 V. The device provides a typical under-voltage detection threshold of 4.1 V with a precision of ±1%. It draws a maximum operating current of 550 nA and supports an extended temperature range from -40°C to +125°C. The component is housed in a compact SOP-4 package.

Feature Summary

• CMOS technology ensures ultra-low power consumption suitable for battery-operated systems.
• Adjustable reset delay timer allows customization of response timing via external components.
• High accuracy voltage detection with ±1% precision ensures reliable system monitoring.

Applications

• Portable electronic devices requiring low standby current
• Battery-powered equipment needing precise voltage supervision
• Industrial control systems operating in wide temperature environments

Procurement Notes

Verify the obsolete status and last-time-buy availability through official ROHM channels before finalizing procurement plans. Confirm that the SOP-4 package and specific suffix match design requirements. Ensure compliance with RoHS directives as indicated in official documentation. Cross-reference datasheet revisions to confirm parameter stability for long-term production needs.

Selection Notes

Select this component when a fixed 4.1 V threshold with high precision is required alongside adjustable delay functionality. Consider the SOP-4 footprint for space-constrained designs. Evaluate the 550 nA current draw against system power budgets. Verify that the 7 V maximum input voltage aligns with the target supply rail without exceeding limits.

Part Context

This part belongs to the BU42(43)xxF series of voltage detectors. It shares functional similarities with other members like the BU4340G-TR but differs in package type (SOP-4 vs SSOP-5) and specific threshold characteristics. The series is characterized by CMOS construction and adjustable delay capabilities for various supervisory roles.

Replacement Considerations

The BD5241G-1TR is listed as a similar level replacement with the same pinout. Verify compatibility regarding the SSOP-5 package versus the original SOP-4 form factor and ensure electrical parameters such as threshold voltage and current consumption meet design specifications.