BU4917G-TR

Supervisors Overview

The BU4917G-TR is a standard CMOS voltage detector IC from ROHM Semiconductor, designed for high-accuracy monitoring with a typical detection threshold of 1.7V and ±1% precision. It features a CMOS output type and operates within a reset active voltage range of 0.7V to 7V. The device consumes ultra-low current, specified as 0.55µA at Vdet=4.8V in the off state and 0.40µA in the on state. It lacks manual reset, watchdog timer, and chip enable functions. The component is housed in an SSOP-5 package and supports operation across a temperature range of -40°C to +125°C.

Supervisors Feature Summary

• Ultra-low current consumption design suitable for battery-powered applications
• High accuracy voltage detection with ±1% precision tolerance
• CMOS output configuration providing direct logic interface capability

Supervisors Applications

• Portable electronic devices requiring low power standby modes
• Battery-operated systems needing precise voltage supervision
• General-purpose microcontroller reset circuits

Supervisors Procurement Notes

Verify supply status carefully as this part may be classified as Not Recommended for New Designs (NRND). Confirm that the SSOP-5 package and CMOS output align with your PCB footprint and logic requirements. Ensure the 1.7V threshold matches your system's brown-out protection needs. Check RoHS compliance documentation for environmental regulations. Validate operating temperature range suitability for your specific application environment before finalizing procurement.

Supervisors Selection Notes

Select this component when a fixed 1.7V threshold with CMOS output is required. Compare against the BU4817G-TR if an open-drain output is preferred instead. Consider the BU4913G-TR or BU4919G-TR if different detection voltages are needed. Verify that the absence of a watchdog timer meets system reliability standards. Ensure the SSOP-5 package fits the available board space constraints.

Supervisors Part Context

This device belongs to the BU49xx series of standard CMOS reset ICs from ROHM. The series offers detection voltages from 0.9V to 4.8V in 0.1V increments. It complements the BU48xx series, which provides similar functionality but with Nch open-drain outputs. The BU49xx series is characterized by its CMOS output stage, allowing for higher drive capability compared to open-drain alternatives.

Supervisors Replacement Considerations

The BD5217G-1 is listed as a similar level replacement with the same package and specifications. The BU4917FVE is another alternative with similar specifications but in a VSOF5 package.