BU4809FVE-TR

Supervisors Overview

The BU4809FVE-TR is a low voltage standard CMOS voltage detector IC manufactured by ROHM Semiconductor. It operates within a supply voltage range of 0.7 V to 7 V and features an open-drain output type. The device provides under-voltage detection with a typical threshold voltage of 0.9 V and a precision of ±1%. It includes a reset delay timer and maintains a low circuit current consumption of 0.55 μA at Vdet=4.8V. The component is housed in a VSOF-5 package and supports a manual reset function.

Supervisors Feature Summary

• Standard CMOS voltage detection architecture for reliable monitoring
• Open-drain output configuration compatible with various logic levels
• Integrated manual reset capability for system control flexibility

Supervisors Applications

• Portable electronic devices requiring low voltage supervision
• Battery-powered systems needing under-voltage protection
• General purpose microprocessor reset circuits

Supervisors Procurement Notes

Verify the specific suffix TR indicates tape and reel packaging when ordering. Confirm the VSOF-5 package dimensions against your PCB footprint requirements. Ensure the 0.7 V to 7 V operating range aligns with your target supply voltage. Check for any end-of-life notices or recommended replacement parts like BD5209G-1 if availability is constrained.

Supervisors Selection Notes

Select this component for applications requiring precise under-voltage detection around 0.9 V. The open-drain output allows for wired-OR connections. Consider the low static current for battery longevity. Verify that the manual reset feature meets your system's initialization requirements compared to auto-reset alternatives.

Supervisors Part Context

This part belongs to ROHM's BU48xx series of standard voltage detectors. It shares architectural similarities with other members like BU4839FVE-TR but differs in threshold voltage. The series is designed for cost-effective power management in consumer electronics, offering high accuracy and low power consumption in compact packages.

Supervisors Replacement Considerations

BD5209G-1 is listed as a similar specification alternative. Verify package compatibility between VSOF-5 and SSOP-5 if substituting.