BU4943FVE-TR

Supervisors Overview

The BU4943FVE-TR is a CMOS voltage detector IC manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features a fixed threshold voltage of 4.3 V with an overvoltage threshold of 4.343 V and accuracy of 1%. The device operates within a supply voltage range of 0.7 V to 7 V and consumes a static current of 550 nA. It utilizes a VSOF-5 surface-mount package and supports an operating temperature range from -40°C to +125°C. Key specifications include a maximum power dissipation of 210 mW and a single monitored input channel.

Supervisors Feature Summary

• CMOS output type for digital logic compatibility
• High detection accuracy of 1% for precise monitoring
• Low static current consumption of 550 nA
• Wide operating temperature range up to 125°C

Supervisors Applications

• Power supply supervision in electronic systems
• Voltage monitoring for microprocessor reset circuits
• Battery backup system monitoring
• Overvoltage protection circuits

Supervisors Procurement Notes

Verify component authenticity through authorized channels as the part status is obsolete. Confirm RoHS compliance details via official documentation. Check regional availability restrictions before procurement planning. Ensure storage conditions meet semiconductor handling standards. Validate datasheet revisions against specific production batches.

Supervisors Selection Notes

Consider the VSOF-5 package dimensions for PCB layout constraints. Evaluate the 4.3 V threshold against target supply rails. Assess thermal performance given the 210 mW power dissipation limit. Compare static current requirements with low-power design goals. Verify compatibility with CMOS logic levels at the output stage.

Supervisors Part Context

This component belongs to the BU4943FVE series of standard voltage detectors. It serves as a specialized integrated circuit for power management within the PMIC category. The device provides reliable voltage supervision without manual reset or watchdog timer functions. Its design focuses on compact surface-mount integration for modern electronics.

Supervisors Replacement Considerations

BD5243G-1TR is listed as a similar specification replacement with comparable detection voltage.