BU4817FVE-TR

Supervisors Overview

The BU4817FVE-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features an open-drain output and operates within a supply voltage range of 0.7 V to 7 V. The typical under-voltage detection threshold is set at 1.7 V with a precision accuracy of ±1%. The device includes a hysteresis voltage defined as VDET multiplied by 0.05. It supports a low-level output current of 3.3 mA and a high-level output current of 6.5 mA. The component functions without manual reset or watchdog timer capabilities. It is housed in a VSOF-5 package and rated for operation between -40°C and +125°C.

Supervisors Feature Summary

• Provides precise under-voltage detection with a fixed threshold of 1.7 V and ±1% accuracy.
• Features an open-drain output configuration suitable for interfacing with various logic levels.
• Incorporates internal hysteresis to prevent output oscillation during voltage transitions.
• Operates across a wide supply voltage range from 0.7 V to 7 V.

Supervisors Applications

• Monitoring power supply voltages in portable electronic devices
• Ensuring system stability in battery-operated equipment
• Providing reset signals for microcontrollers and digital circuits

Supervisors Procurement Notes

Verify the specific ordering suffix and package variant when sourcing replacements, as the BU4817FVE-TR may be discontinued or restricted. Confirm that the replacement part matches the 1.7 V threshold, open-drain output type, and VSOF-5 footprint. Check RoHS compliance and operating temperature range requirements against the original design specifications before finalizing procurement decisions.

Supervisors Selection Notes

Select this component when a fixed 1.7 V detection threshold is required for power monitoring. The open-drain output allows flexible connection to different logic families. Ensure the application does not require manual reset or watchdog timer functions, as these are absent. Verify that the VSOF-5 package dimensions fit the PCB layout constraints and that the operating temperature range meets environmental demands.

Supervisors Part Context

This component belongs to the BU4817 series of standard voltage detectors from ROHM Semiconductor. It is part of a family of CMOS voltage detection ICs designed for low-power applications. The series offers various threshold voltages and package options to suit different system requirements while maintaining consistent performance characteristics such as accuracy and hysteresis.

Supervisors Replacement Considerations

The BD5217G-1 is documented as a similar specification replacement with comparable 1.7 V threshold and open-drain output, though it uses an SSOP-5 package and features adjustable delay.