BU4845FVE-TR

Supervisors Overview

The BU4845FVE-TR is a CMOS voltage detector IC from ROHM Semiconductor, housed in a VSOF-5 surface-mount package. It features an open-drain output and monitors a single input channel with a threshold voltage of 4.5 V. The device operates within a supply voltage range up to 7 V and maintains high accuracy of ±1%. Static current consumption is typically 0.55 µA. It functions across a wide temperature range from -40°C to +125°C without manual reset or watchdog timer capabilities.

Supervisors Feature Summary

• Ultra-low current consumption for power efficiency
• High-accuracy voltage detection with ±1% tolerance
• Compact VSOF-5 surface-mount packaging

Supervisors Applications

• Microcontroller system supervision
• Logic circuit power monitoring
• Battery backup switching circuits

Supervisors Procurement Notes

Verify the specific part number against official ROHM documentation to confirm active status and pinout compatibility. Check for end-of-life notices as distribution channels may list obsolete inventory. Ensure the VSOF-5 footprint matches your PCB design requirements before procurement.

Supervisors Selection Notes

Select this component when a precise 4.5 V threshold is required for single-channel monitoring. Consider the open-drain output configuration for interfacing with various logic levels. Evaluate the low static current requirement against system power budgets to ensure optimal energy efficiency during standby modes.

Supervisors Part Context

This part belongs to the BU48xx series of standard CMOS reset ICs designed for low-voltage applications. The series offers detection voltages from 0.9V to 4.8V in 0.1V increments. The BU4845FVE-TR specifically targets applications requiring reliable supervision at the 4.5 V level with minimal power draw.

Supervisors Replacement Considerations

BU4844FVE-TR (4.4 V threshold) and BU4846FVE-TR (4.6 V threshold) are direct functional substitutes within the same series and package.