BU4310F-TR

Overview

The BU4310F-TR is a voltage detector with an adjustable delay time, manufactured by ROHM Semiconductor. It features a typical under-voltage detection voltage of 1.0 V with ±1% precision and a reset active voltage range of 0.7 to 7 V. The device utilizes a CMOS output type and includes an adjustable reset delay timer, while lacking manual reset, watchdog timer, and automotive certification capabilities. Circuit current consumption is specified at 0.40 μA (on) and 0.55 μA (off) at Vdet=4.8V. It is housed in an SSOP-5 package.

Feature Summary

• Adjustable reset delay timer functionality
• CMOS output interface
• Low power consumption design

Applications

• General purpose voltage monitoring
• Microprocessor reset circuits
• Battery powered devices

Procurement Notes

Verify the specific suffix 'F' indicates the SOP-4 or similar package variant as per official datasheets, distinct from the 'G' series which uses SSOP-5. Confirm supply status as the component may be subject to discontinuation or last-time-buy notices. Ensure RoHS compliance documentation is available for the specific reel quantity ordered. Cross-reference the exact part number against the manufacturer's latest lifecycle status to avoid obsolete stock issues.

Selection Notes

Select this component when an adjustable delay time is required for reset sequencing without manual intervention. The low operating current makes it suitable for battery-operated applications where standby power conservation is critical. Verify that the 0.7 V to 7 V reset active voltage range covers the system's operational requirements. Consider the package size constraints and thermal characteristics relative to the application environment.

Part Context

This component belongs to the BU42/43xxF series of supervisory circuits designed for low-voltage detection. It serves as a support circuit for power supplies, ensuring stable operation by monitoring voltage levels. The series is characterized by high accuracy and low current consumption, targeting portable electronics and general industrial control systems requiring reliable power management.

Replacement Considerations

The BD5210G-1 is listed as a similar level replacement with the same pinout. Verify package compatibility and electrical parameter alignment before substitution.