BU4917FVE-TR

Supervisors Overview

The BU4917FVE-TR is a standard CMOS voltage detector IC from ROHM Semiconductor, featuring a fixed 1.7V under-voltage detection threshold with ±1% precision. It operates within a supply voltage range of 0.7V to 7V and delivers a CMOS output signal. The device consumes ultra-low current, typically 0.40µA during active detection and 0.55µA in standby. It includes hysteresis defined as Vdet × 0.05 and functions across an industrial temperature range of -40°C to +125°C. Packaged in a VSOF-5 surface-mount format, it lacks manual reset or watchdog features.

Supervisors Feature Summary

• Ultra-low current consumption for extended battery life
• High accuracy voltage detection with fixed threshold
• CMOS output interface for direct logic integration
• Integrated hysteresis to prevent output oscillation

Supervisors Applications

• Microcontroller power supply monitoring
• Battery voltage level detection
• Low voltage warning circuits
• Reset signal generation for digital systems

Supervisors Procurement Notes

Verify the specific suffix FVE-TR against the official datasheet to confirm the VSOF-5 package and reel packaging configuration. Confirm RoHS compliance status through the manufacturer's latest documentation. Ensure the fixed 1.7V threshold matches the design requirements, as adjustable variants exist within the series. Check for end-of-life notices if sourcing for long-term production.

Supervisors Selection Notes

Select this component when a precise 1.7V threshold is required without external resistor networks. The CMOS output type is suitable for low-power digital interfaces. Consider the VSOF-5 package size for space-constrained PCB layouts. Verify that the absence of a watchdog timer and manual reset function aligns with the system architecture needs.

Supervisors Part Context

This part belongs to the BU49xx series of standard CMOS reset ICs designed for high accuracy and low current consumption. The series offers detection voltages from 0.9V to 4.8V in 0.1V increments. The BU4917 specifically targets applications requiring a 1.7V trip point, providing a reliable solution for power management in portable and industrial electronics.

Supervisors Replacement Considerations

The BD5217G-1 is listed as a similar specification replacement with an open-drain output instead of CMOS. Both share the 1.7V detection voltage and ±1% precision. Verify output compatibility when substituting, as the drive characteristics differ between CMOS and open-drain configurations.