BU4923G-TR

Supervisors Overview

The BU4923G-TR is a standard CMOS voltage detector IC from ROHM Semiconductor, designed for high-accuracy low-current consumption applications. It features a typical under-voltage detection threshold of 2.3V with a precision of ±1%. The device operates within a supply voltage range of 0.7V to 7V and includes hysteresis defined as VDET multiplied by 0.05. It utilizes an SSOP-5 package and supports an operating temperature range from -40°C to 125°C.

Supervisors Feature Summary

• CMOS output type providing digital reset signals
• High accuracy voltage detection with specified tolerance
• Low current consumption suitable for battery-powered systems
• Integrated hysteresis to prevent output oscillation

Supervisors Applications

• Microprocessor system reset circuits
• Battery voltage monitoring
• Portable electronic device power management

Supervisors Procurement Notes

Verify the component status before procurement as this part may be classified as Not Recommended for New Designs (NRND). Confirm that the replacement BD5223G-1TR meets all functional requirements, noting differences in output type and delay timer capabilities. Ensure the SSOP-5 package dimensions align with existing board layouts.

Supervisors Selection Notes

Select this component when a fixed 2.3V detection threshold with CMOS output is required. Consider the BD5223G-1TR if adjustable delay or open-drain output is preferred. Verify that the ±1% accuracy and hysteresis characteristics satisfy the specific circuit noise immunity requirements.

Supervisors Part Context

This component belongs to the BU49xx series of standard CMOS reset ICs. The series offers various detection voltages from 0.9V to 4.8V in 0.1V increments. The BU4923G specifically targets applications requiring a 2.3V threshold with CMOS logic compatibility.

Supervisors Replacement Considerations

The BD5223G-1TR is a recommended replacement with the same SSOP-5 package. Note that the replacement features an open-drain output and adjustable delay timer, differing from the original's CMOS output and no-delay design.