BU4340G-TR

Overview

The BU4340G-TR is a voltage detector with an adjustable delay time, manufactured by ROHM Semiconductor. It features a typical under-voltage detection voltage of 4.0 V and a precision of ±1%. The reset active voltage range spans from 0.7 V to 7 V, utilizing a CMOS output type. The circuit current is 0.40 μA when on (at Vdet=4.8V) and 0.55 μA when off. It operates within a temperature range of -40°C to +125°C and is housed in an SSOP-5 package.

Feature Summary

• Adjustable reset delay timer functionality
• CMOS output type for low power consumption
• Wide operating voltage range supporting various system requirements

Applications

• General purpose voltage monitoring in electronic circuits
• System reset generation in microprocessor applications
• Power supply supervision in portable devices

Procurement Notes

Verify the specific ordering suffix and packaging configuration to ensure compatibility with automated assembly processes. Confirm that the component status aligns with long-term supply requirements, as availability may be subject to change. Cross-reference the datasheet revision date to ensure all electrical parameters match the design specifications before finalizing procurement orders.

Selection Notes

Select this component for applications requiring precise voltage monitoring with customizable reset timing. The low static current makes it suitable for battery-powered systems. Ensure the input voltage range falls within the specified operational limits. Consider the SSOP-5 package size constraints during PCB layout design to maintain signal integrity and thermal performance.

Part Context

This part belongs to the BU42(43)xxG series of voltage detectors. It is designed for general-purpose use rather than automotive applications. The series offers various threshold voltages to accommodate different system requirements. The BU4340G-TR specifically targets standard industrial and consumer electronics markets.

Replacement Considerations

The BD5240G-1 is listed as a similar level replacement with the same pinout and package. Verify functional equivalence and parameter alignment before substitution.