BD45425G-TR

Overview

The BD45425G-TR is a voltage detector IC from the BD45 series manufactured by ROHM Semiconductor. It features a fixed threshold detection voltage of 4.2 V with an accuracy of ±1%. The device provides a manual reset function and utilizes an open-drain output type. It operates within a supply voltage range up to 10 V and includes a fixed delay time of 50 ms for reset assertion. The component supports a wide operating temperature range from -40°C to +105°C and is housed in a compact SSOP-5 package.

Feature Summary

• Provides precise under-voltage monitoring with a fixed 4.2 V detection threshold
• Includes a manual reset input for controlled system recovery
• Features an open-drain output compatible with various logic levels
• Operates reliably across extended industrial temperature ranges

Applications

• Microprocessor supervisor circuits requiring fixed voltage thresholds
• Battery-powered systems needing low standby current monitoring
• Industrial control units requiring extended temperature operation
• Embedded systems utilizing manual reset mechanisms

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to end-of-life status. Confirm RoHS compliance and specific lot codes against current inventory records. Ensure packaging integrity matches reel specifications. Cross-reference datasheet revisions to confirm pinout and electrical characteristics remain consistent with design requirements before final procurement decisions.

Selection Notes

Select this component when a fixed 4.2 V threshold is required without adjustable settings. Consider the open-drain output configuration for interface compatibility with target logic families. Evaluate the 50 ms fixed delay against system startup timing requirements. Verify that the SSOP-5 package fits within the available PCB footprint constraints and thermal management capabilities of the application environment.

Part Context

This part belongs to the BD45 series of CMOS voltage detectors designed for general-purpose power management. It serves as a dedicated supervisor circuit for digital systems, ensuring stable operation by monitoring supply rails. The series emphasizes low power consumption and high precision, making it suitable for portable and industrial electronics where reliable power sequencing is critical for system stability.

Replacement Considerations

BD5242G-1TR is listed as a recommended replacement with similar package and detection voltage, though it features adjustable delay instead of fixed delay.