BD45471G-TR

Overview

The BD45471G-TR is a CMOS voltage detector IC manufactured by Rohm Semiconductor. It operates within a supply voltage range of 2.3V to 4.8V and features a detection threshold of 4.7V. The device provides supervisory functions with an accuracy of 1%. Key electrical specifications include a quiescent current of 850 nA and a power dissipation rating of 540 mW. It is housed in a 5-pin SSOP package.

Feature Summary

• Built-in counter timer functionality for precise reset timing control
• Open drain output configuration for flexible interface compatibility
• High accuracy voltage monitoring with 1% tolerance

Applications

• Microprocessor system reset circuits
• Battery-powered device voltage supervision
• Embedded system power management

Procurement Notes

Verify the specific suffix 'G-TR' confirms the tape-and-reel packaging format and RoHS compliance status. Ensure the 5-SSOP footprint matches the target PCB design. Confirm the 4.7V detection threshold aligns with the system's required reset voltage level before procurement.

Selection Notes

Select this component when a low quiescent current supervisor with integrated timer functionality is required. The 4.7V threshold suits applications operating near the upper limit of the 2.3V-4.8V input range. Consider the open-drain output if external pull-up resistors are needed for logic level translation.

Part Context

This part belongs to the BD45xxx series of supervisory circuits from Rohm Semiconductor. It is designed for single-channel voltage monitoring applications requiring compact packaging and low power consumption. The series typically offers various detection voltages and package options for diverse embedded systems.

Replacement Considerations

Check for direct pin-compatible alternatives within the BD45xxx family that offer different detection thresholds or package types. Verify that any substitute maintains the same 5-SSOP footprint and open-drain output characteristics to ensure circuit compatibility.