BD45305G-TR

Overview

The BD45305G-TR is a single-channel voltage detector from the BD45 series by Rohm Semiconductor. It features a fixed detection threshold of 3.0V with an accuracy of ±1%. The device provides an active-low open-drain output and includes a manual reset function. It operates within a supply voltage range of 0.95V to 10V and maintains a typical quiescent current of 800nA. The component supports a fixed delay time of 45ms minimum and functions across an extended temperature range of -40°C to +105°C.

Feature Summary

• Provides precise under-voltage monitoring with a fixed 3.0V detection threshold
• Features low power consumption suitable for battery-operated applications
• Includes manual reset capability for system control flexibility

Applications

• Processor supervisor circuits requiring stable voltage monitoring
• Battery-powered devices needing low standby current
• Embedded systems with manual reset requirements

Procurement Notes

Verify the specific manufacturing date code and lot number upon receipt, as this component may be subject to end-of-life or last-time-buy status. Ensure compatibility with existing PCB footprints, specifically the 5-SSOP package dimensions. Confirm that the fixed delay characteristics meet the system timing requirements without modification.

Selection Notes

Select this component when a fixed 3.0V threshold is required rather than adjustable options. Consider the manual reset feature if external reset logic is preferred over automatic recovery. Verify that the open-drain output interface matches the microcontroller input specifications. Check availability status as older revisions may have limited stock.

Part Context

This part belongs to the BD45xxx series of supervisory circuits designed for general-purpose voltage monitoring. It shares the SSOP-5 package form factor with other variants in the family but differs in its specific detection voltage and delay characteristics. The series is optimized for cost-sensitive consumer electronics and industrial control applications.

Replacement Considerations

BD5230G-1TR is a manufacturer-recommended replacement offering similar package and voltage detection levels, though it features adjustable delay instead of fixed delay.