BU4217F-TR

Overview

The BU4217F-TR is a voltage detector with an adjustable delay time, manufactured by ROHM Semiconductor. It features a typical under-voltage detection voltage of 1.7 V and a precision of ±1%. The reset active voltage range spans from 0.7 V to 7 V, utilizing an open drain output type. The device supports an adjustable delay timer with a low reset active state. Circuit current consumption is specified at 0.40 μA (ON) and 0.55 μA (OFF) at VDET=4.8V. It operates within a temperature range of -40°C to +125°C and is housed in an SOP-4 package.

Feature Summary

• Adjustable delay timer functionality for customized reset timing
• Open drain output configuration for flexible interfacing
• Wide operating supply voltage range supporting various system levels

Applications

• Portable equipment requiring low power monitoring
• Battery-powered systems needing under-voltage protection
• General purpose supervisory circuits in consumer electronics

Procurement Notes

Verify the specific ordering suffix and package variant against the latest manufacturer documentation before procurement. Confirm that the component status aligns with project lifecycle requirements, as availability may be limited. Ensure compatibility with existing PCB footprints and design specifications during the sourcing process.

Selection Notes

Select this component when an adjustable delay feature is required alongside precise under-voltage detection. Consider the open drain output capability for level shifting or wired-OR configurations. Evaluate the low standby current consumption for battery-operated applications where power efficiency is critical.

Part Context

This part belongs to the BU42xx series of voltage detectors from ROHM Semiconductor. These devices are designed for monitoring power supply voltages in portable and battery-operated equipment. The series offers various detection voltages and package options to suit different application needs.

Replacement Considerations

BD5217G-1 is listed as a similar level replacement with the same pinout.