BD45281G-TR

Overview

The BD45281G-TR is a voltage detector supervisory circuit manufactured by ROHM Semiconductor. It features a fixed threshold voltage of 2.8 V with an accuracy of ±1%. The device provides a manual reset function and utilizes an open-drain output type. It operates within a maximum supply voltage of 10 V and includes a fixed reset delay time of 100 ms. The component supports a wide operating temperature range from -40°C to +105°C. It is housed in an SSOP-5 package and consumes a typical static current of 850 nA.

Feature Summary

• Provides precise under-voltage detection with a fixed threshold voltage for reliable system monitoring.
• Features a manual reset capability allowing external control over the reset state generation.
• Utilizes an open-drain output configuration suitable for interfacing with various logic families.
• Designed for surface-mount installation in compact electronic applications.

Applications

• Microprocessor reset circuits
• Portable equipment power management
• Battery-operated device supervision

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package integrity and pin alignment against datasheet specifications. Ensure compatibility with existing PCB footprint dimensions. Validate electrical parameters against application requirements before integration. Check for alternative sourcing options given discontinued manufacturing status.

Selection Notes

Select this component when a fixed 2.8 V threshold is required for system supervision. Consider the open-drain output for flexible logic level interfacing. Evaluate the 100 ms delay against system startup timing constraints. Verify that the SSOP-5 package fits the available board space. Assess the low static current consumption for battery-powered designs.

Part Context

This part belongs to the BD45 series of voltage detectors from ROHM Semiconductor. It is designed for general-purpose supervisory applications requiring accurate voltage monitoring. The series offers various threshold voltages to suit different power rail requirements. The BD45281G-TR specifically targets systems needing a 2.8 V detection point.

Replacement Considerations

BD5228G-1TR is a confirmed substitute with similar functionality and package.