BD46445G-TR

Overview

The BD46445G-TR is a voltage detector IC from the BD46 series by ROHM Semiconductor, housed in an SSOP-5 package. It features a typical threshold voltage of 4.4 V with ±1% accuracy and a fixed reset delay time of 50 ms. The device supports a maximum supply voltage of 10 V and operates within a temperature range of -40°C to +105°C. It draws a static current of 850 nA and provides a CMOS output type with manual reset capability.

Feature Summary

• Integrates a built-in counter timer delay circuit, eliminating the need for external capacitors for delay time setting.
• Offers high detection accuracy with a precision of ±1% for the monitored voltage threshold.
• Features low current consumption characteristics suitable for power-sensitive applications.

Applications

• Processor supervisor circuits requiring precise voltage monitoring
• Battery-powered systems needing low standby current
• Embedded systems utilizing manual reset functionality

Procurement Notes

Verify component authenticity through authorized channels as the part status is listed as obsolete or end-of-life. Confirm RoHS compliance details via official datasheets before integration. Check for availability of recommended replacement parts such as the BD5244G-1 if sourcing new inventory is not feasible. Ensure packaging specifications match design requirements.

Selection Notes

Select this component when a fixed 50 ms delay is required without external timing components. The CMOS output interface suits digital logic families. Consider the SSOP-5 package constraints for PCB layout. Verify that the 4.4 V threshold aligns with the system's under-voltage detection needs.

Part Context

This device belongs to the BD46xxx series of highly accurate, low current consumption voltage detector ICs. It is designed for applications requiring reliable supervision of power rails in compact surface-mount packages. The series emphasizes simplicity by integrating delay timers internally.

Replacement Considerations

The BD5244G-1 is identified as a similar level replacement with the same package type. Note that the BD5244G-1 features adjustable delay rather than fixed delay, which may require circuit modification.