BU4822G-TR

Supervisors Overview

The BU4822G-TR is a standard CMOS voltage detector IC manufactured by ROHM Semiconductor. It features an open-drain output type and monitors a single input channel with a typical under-voltage detection threshold of 2.2V. The device operates within a reset active voltage range of 0.7V to 7V and offers a VDET precision of ±1%. It consumes 0.40μA in the ON state and 0.55μA in the OFF state at VDET=4.8V, with a hysteresis voltage of VDET x 0.05. The component supports a maximum operating temperature of +125°C and is housed in an SSOP-5 package.

Supervisors Feature Summary

• CMOS technology for low power consumption
• Open-drain output configuration
• High accuracy voltage monitoring

Supervisors Applications

• Portable equipment
• Battery-powered devices
• Microprocessor reset circuits

Supervisors Procurement Notes

Verify the supply status as this part is marked Not Recommended for New Designs (NRND). Confirm availability through authorized distributors or check for the recommended replacement BD5222G-1TR if sourcing for new production. Ensure the SSOP-5 package matches your PCB footprint requirements before ordering.

Supervisors Selection Notes

Select this component for applications requiring a fixed 2.2V threshold with high precision. Consider the BD5222G-1TR as a modern alternative if adjustable delay or lower current consumption is needed. Verify that the open-drain output compatibility fits the downstream logic interface without additional pull-up components beyond standard design practices.

Supervisors Part Context

This component belongs to the BU48 series of standard voltage detectors from ROHM. It is designed for general-purpose power supply monitoring in consumer electronics. The series provides reliable reset signals for microcontrollers and other digital logic circuits when supply voltages drop below specified thresholds.

Supervisors Replacement Considerations

The BD5222G-1TR is listed as a similar level replacement with the same SSOP-5 package. It offers improved specifications including adjustable delay and lower current consumption while maintaining the 2.2V detection threshold.