BD46311G-TR

Overview

The BD46311G-TR is a supervisory circuit voltage detector manufactured by ROHM Semiconductor. It features a fixed detection threshold of 3.1 V with ±1% precision accuracy. The device operates within a reset active voltage range of 0.95 V to 10 V and includes a fixed delay timer of 100 msec. It utilizes a CMOS output type with low active state and supports manual reset functionality. The component is housed in an SSOP-5 package, suitable for surface mount installation, and functions reliably across a temperature range of -40°C to 105°C.

Feature Summary

• CMOS output architecture providing low power consumption characteristics
• Fixed delay timer ensures consistent reset timing stability
• Manual reset capability allows for external control intervention

Applications

• Microprocessor system supervision
• Portable equipment power management
• Battery-operated device monitoring

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status before integration. Confirm that the SSOP-5 package dimensions match your PCB footprint requirements. Ensure the fixed 100 msec delay aligns with your system startup timing constraints. Check for any obsolescence notices or last-time-buy notifications from the manufacturer.

Selection Notes

Select this component when a precise 3.1 V threshold is required without adjustable settings. The CMOS output is suitable for direct interfacing with digital logic circuits. Consider the fixed delay time against systems requiring programmable timeouts. Verify that the operating temperature range meets your environmental specifications.

Part Context

This part belongs to the BD46 series of voltage detectors designed for general-purpose electronic applications. It serves as a critical component for ensuring stable operation by monitoring supply voltages. The series is characterized by high accuracy and low current consumption, making it appropriate for battery-powered devices where efficiency is paramount.

Replacement Considerations

The BD5231G-1TR is listed as a recommended replacement with the same SSOP-5 package. Note that the replacement offers an adjustable delay timer instead of a fixed one and features an open-drain output rather than CMOS. Verify electrical compatibility regarding output drive strength and reset behavior.