BD49E45G-TR

Overview

The BD49E45G-TR is a high-accuracy voltage detector IC from ROHM Semiconductor, designed for monitoring power supply voltages. It features a CMOS output type and operates within a wide supply voltage range of 0.95V to 10V. The device detects under-voltage conditions with a typical threshold of 4.5V and maintains a precision of ±1%. It consumes low circuit current, specified at 0.60μA (ON) and 0.85μA (OFF) at Vs=4.8V. The component utilizes an SSOP5 package and supports a temperature range from -40°C to 105°C.

Feature Summary

• CMOS output interface for direct logic compatibility
• High detection accuracy with ±1% precision
• Low power consumption suitable for battery applications
• Wide operating voltage range up to 10V

Applications

• Portable electronic devices requiring voltage supervision
• Battery-powered systems needing low standby current
• General-purpose power management circuits

Procurement Notes

Verify the NRND status before integration, as this component is not recommended for new designs. Confirm package integrity and RoHS compliance upon receipt. Ensure design reviews account for potential obsolescence and long-term availability constraints associated with end-of-life products.

Selection Notes

Select this part when a CMOS output is required instead of open-drain alternatives in the same family. Consider the specific 4.5V threshold and ±1% tolerance against system requirements. Evaluate the trade-off between the wider 10V reset range and the lower current draw compared to newer series like BD52xx.

Part Context

This component belongs to the BD49E series of standard voltage detectors. It shares the SSOP5 package form factor with other members of the family but differs in output stage and detection characteristics. It serves as a legacy option for simple voltage monitoring tasks where minimal external components are desired.

Replacement Considerations

The BD5245G-1TR is documented as a replacement with the same package. Note differences in output type (Open Drain vs CMOS), delay timer capabilities, and current consumption specifications during transition.