BU4844FVE-TR

Supervisors Overview

The BU4844FVE-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-channel power supply voltages. It operates within a supply voltage range of up to 7 V and features an open-drain output type. The device detects under-voltage conditions with a typical threshold of 4.4 V and offers high accuracy of ±1%. It consumes a low static current of 550 nA and functions reliably across an extended temperature range from -40°C to +125°C. The component is housed in a compact VSOF-5 surface-mount package.

Supervisors Feature Summary

• CMOS technology ensures ultra-low power consumption suitable for battery-operated applications
• High detection accuracy of ±1% maintains precise voltage supervision
• Open-drain output configuration allows flexible interfacing with various logic families

Supervisors Applications

• Portable electronic devices requiring efficient power management
• Industrial control systems needing reliable voltage supervision
• Automotive electronics operating in harsh thermal environments

Supervisors Procurement Notes

Verify the obsolete status before procurement planning as the manufacturer has discontinued this part. Confirm availability through authorized distributors or secondary markets if immediate replacement is not feasible. Ensure compatibility with existing PCB layouts using the VSOF-5 package. Check RoHS compliance documentation for regulatory adherence. Consider lead times associated with end-of-life components when scheduling production.

Supervisors Selection Notes

Select this component for designs requiring a fixed 4.4 V detection threshold without manual reset functionality. The VSOF-5 package suits space-constrained surface-mount applications. Verify that the open-drain output aligns with the system's pull-up requirements. Ensure the operating temperature range meets the environmental demands of the target application. Confirm that no watchdog timer or adjustable delay is needed for the specific use case.

Supervisors Part Context

This component belongs to the BU4844 series of standard voltage detectors from ROHM Semiconductor. It is part of a family of supervisory circuits designed for simple reset generation. The BU4844FVE-TR variant specifically utilizes the VSOF-5 package and includes the trailing suffix indicating tape-and-reel packaging for automated assembly processes.

Supervisors Replacement Considerations

The BD5244G-1 is listed as a recommended replacement with similar specifications. Note differences in package type (SSOP5 vs VSOF5) and reset delay capabilities. Verify pinout compatibility and electrical parameter alignment before substitution.