BD4844FVE-TR

Overview

The BD4844FVE-TR is a CMOS voltage detector IC manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features a single monitored input with an open-drain output type and operates within a supply voltage range up to 7 V. The device has a threshold voltage of 4.4 V and an overvoltage threshold of 4.444 V, with an accuracy of 1%. It consumes a static current of 550 nA and dissipates 210 mW. Operating temperatures range from -40 C to +125 C. The component is housed in a VSOF-5 package and does not include manual reset, watchdog timer, or chip enable functions.

Feature Summary

• CMOS voltage detection with open-drain output
• Low static current consumption
• High accuracy threshold monitoring
• Wide operating temperature range

Applications

• Supervisory circuits
• Voltage monitoring systems
• Embedded system power management

Procurement Notes

Verify the exact part number BD4844FVE-TR against official ROHM documentation to ensure compatibility. Confirm that the VSOF-5 package matches your PCB footprint requirements. Check for end-of-life status as indicated by distributor listings. Ensure RoHS compliance meets your regulatory standards. Validate electrical parameters such as threshold voltage and operating temperature against your specific design constraints before procurement.

Selection Notes

Select this component when a precise voltage monitor with low power consumption is required. The 1% accuracy suits applications needing reliable threshold detection. The open-drain output allows flexible interfacing with various logic levels. Consider the VSOF-5 package size for space-constrained designs. Verify that the absence of a watchdog timer aligns with system safety requirements.

Part Context

The BD4844FVE-TR belongs to the BU4844FVE series of voltage detectors from ROHM Semiconductor. It is part of a family of CMOS supervisory ICs designed for efficient power management. Similar models in the series may offer different threshold voltages or additional features like watchdog timers. This specific variant focuses on basic voltage monitoring with high precision and low quiescent current.

Replacement Considerations

Check for direct substitutes within the BU4844FVE series with compatible threshold voltages. Verify pinout compatibility if replacing with other VSOF-5 packages. Ensure replacement parts meet the same operating temperature and accuracy specifications.