BU4909FVE-TR

Supervisors Overview

The BU4909FVE-TR is a single-channel voltage detector manufactured by Rohm Semiconductor, designed for power supply support applications. It operates within a detection voltage range of 0.7 V to 7 V with a typical threshold of 0.9 V and high precision accuracy of ±1%. The device features a CMOS output type and functions without a reset delay timer or manual reset capability. It is housed in a VSOF5 package (1.6x1.6 mm) and supports surface mount installation. The component operates across an extended temperature range from -40°C to 125°C, ensuring reliability in various electronic environments.

Supervisors Feature Summary

• CMOS output interface providing low current consumption for battery-powered systems
• High detection accuracy with ±1% precision for reliable voltage monitoring
• Compact VSOF5 package design suitable for space-constrained PCB layouts

Supervisors Applications

• Portable battery-operated devices requiring efficient power management
• Microprocessor and microcontroller system supervision
• Multi-output power supply monitoring circuits

Supervisors Procurement Notes

Verify the specific suffix FVE against official Rohm documentation to confirm package dimensions and tape/reel specifications. Confirm end-of-life status as sourcing may be limited. Ensure compatibility with existing PCB footprints for the VSOF5 package before procurement.

Supervisors Selection Notes

Select this component when precise voltage monitoring is required with minimal quiescent current. The fixed threshold and lack of delay timer suit applications where immediate response to voltage deviations is critical. Verify that the CMOS output drive capability meets the load requirements of the connected circuitry.

Supervisors Part Context

This part belongs to the BU49xx series of standard voltage detectors from Rohm Semiconductor. These ICs are engineered for supervisory roles in digital logic systems, offering compact solutions for detecting under-voltage conditions without complex external components.

Supervisors Replacement Considerations

BD5209G-1TR is documented as a similar specification replacement option.