BD45485G-TR

Overview

The BD45485G-TR is a voltage detector with a fixed delay time, manufactured by ROHM Semiconductor. It features an under-voltage detection voltage of 4.8 V typical and a precision of ±1%. The reset active voltage range spans from 0.95 V to 10 V. It utilizes an open drain output type with a fixed reset delay timer of 50 msec. The circuit current is 0.80 μA when on (at Vdet=4.8V) and 0.85 μA when off. It supports manual reset but lacks a watchdog timer and automotive qualification. The operating temperature range is -40°C to +105°C, housed in an SSOP-5 package.

Feature Summary

• Fixed delay timer for consistent reset timing
• Manual reset capability for system control
• Open drain output configuration
• Low power consumption design

Applications

• Processor supervisor circuits
• Battery backup systems monitoring
• General voltage monitoring in electronic devices

Procurement Notes

Verify the supply status as the component may be discontinued or end-of-life. Confirm the ordering part number BD45485G-TR matches the required SSOP-5 package and tape/reel quantity. Check RoHS compliance documentation. Ensure the fixed delay and manual reset features align with the specific application requirements before procurement.

Selection Notes

Select this component for applications requiring a fixed 50 msec delay and manual reset functionality. It is suitable for single-input voltage monitoring with a threshold of 4.8 V. Consider the open drain output and low standby current for power-sensitive designs. Verify compatibility with the target voltage range of 0.95 V to 10 V.

Part Context

The BD45485G-TR belongs to the BD45 series of voltage detectors from ROHM Semiconductor. It is designed for supervisory circuits in portable and industrial equipment. The TR suffix indicates tape and reel packaging. This part is distinct from adjustable delay variants within the same family.

Replacement Considerations

BD5248G-1 is listed as a similar level replacement with the same package. Verify pinout and electrical parameter compatibility before substitution.