BU4820G-TR

Supervisors Overview

The BU4820G-TR is a standard CMOS voltage detector IC manufactured by Rohm Semiconductor. It features a single monitored input with a typical under-voltage detection threshold of 2.0V and a precision of ±1%. The device provides an open-drain reset output that is active low, without manual reset or watchdog timer capabilities. It operates within a supply voltage range of 0.7V to 7V and supports a temperature range of -40°C to 125°C. The component is housed in a 5-SSOP (SC-74A) package.

Supervisors Feature Summary

• Provides simple power-on reset functionality for monitoring single voltage rails
• Features open-drain output compatible with various logic families
• Operates across extended industrial temperature ranges

Supervisors Applications

• Microprocessor system supervision
• Portable equipment power management
• Battery-operated device voltage monitoring

Supervisors Procurement Notes

Verify the current lifecycle status as the component is marked as Not Recommended for New Designs. Confirm availability through authorized distributors for existing production needs. Ensure compliance with RoHS3 specifications and check for any specific environmental certifications required for your region before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a fixed 2.0V threshold is required for system supervision. Consider the BD5220G-1 if adjustable delay timers are needed, noting the pin compatibility. Evaluate the lower quiescent current of newer alternatives if power efficiency is critical for battery-powered applications.

Supervisors Part Context

This part belongs to the BU4820 series of standard voltage detectors from Rohm Semiconductor. It is designed for general-purpose supervisory circuits where precise voltage monitoring is essential. The series offers various threshold options to suit different logic levels and system requirements.

Supervisors Replacement Considerations

The BD5220G-1TR is listed as a recommended replacement with the same SSOP5 package and similar electrical characteristics, though it includes an adjustable delay timer feature.