BD4923G-TR

Overview

The BD4923G-TR is a processor supervisor voltage detector manufactured by Rohm Semiconductor. It operates within a supply voltage range of 0.95V to 10V and features a fixed detection threshold of 2.3V with ±1% accuracy. The device provides an active-low CMOS output in a 5-pin SSOP package. It includes hysteresis defined as Vs x 0.05 and consumes typical circuit currents of 0.60μA (ON) and 0.85μA (OFF) at Vs=4.8V. Operating temperatures span from -40°C to +105°C.

Feature Summary

• CMOS output interface for direct logic compatibility
• High precision voltage detection with ±1% accuracy
• Ultra-low current consumption suitable for battery applications
• Integrated hysteresis to prevent output oscillation

Applications

• Microprocessor power supply monitoring
• Portable electronic devices requiring low standby current
• Battery-operated equipment supervision
• General-purpose voltage reset circuits

Procurement Notes

Verify the specific revision level and manufacturing date code upon receipt, as this component is designated as Not Recommended for New Designs. Confirm that the 5-SSOP package dimensions match the target PCB footprint. Ensure compliance with RoHS standards if required by the end product specifications. Cross-reference ordering part numbers carefully to avoid confusion with similar family members.

Selection Notes

Select this component when a fixed 2.3V threshold with high accuracy is required. The CMOS output type is suitable for standard digital logic interfaces without additional pull-up resistors. Consider the operating temperature range of -40°C to +105°C for industrial or automotive environments. Evaluate the low current consumption against system power budget requirements.

Part Context

This part belongs to the BD49xxx series of standard voltage detectors. It is functionally related to other parts in the series such as the BD49E52G-TR, which offers different detection voltages. The BD4923G-TR shares the same package and basic functionality but differs in threshold settings compared to variants like the BD4927G-TR.

Replacement Considerations

The BD5223G-1TR is listed as a recommended replacement with similar specifications. Note differences in output type (Open Drain vs CMOS) and delay timer capabilities when substituting.