BD46285G-TR

Overview

The BD46285G-TR is a voltage detector supervisory circuit manufactured by ROHM Semiconductor, designed for monitoring single-input power supply voltages. It features a fixed reset delay time of 50 ms and an under-voltage detection threshold of 2.8 V with ±1% precision. The device operates within a supply voltage range of 0.95 V to 10 V and utilizes a CMOS output type. Packaged in an SSOP-5 format, it supports manual reset functionality without a watchdog timer or battery backup switch. The component is rated for operation between -40°C and +105°C, with a typical active circuit current of 0.80 μA at 4.8 V.

Feature Summary

• Provides precise under-voltage detection with a fixed 50 ms reset delay time for stable system initialization.
• Features low static current consumption suitable for battery-powered applications.
• Supports manual reset input for controlled system recovery.

Applications

• Portable electronic devices requiring reliable power supervision
• Battery-operated equipment needing low quiescent current
• Embedded systems with single voltage rail monitoring

Procurement Notes

Verify the obsolete status and last-time-buy availability through official ROHM channels before design finalization. Confirm that the SSOP-5 package dimensions match your PCB footprint requirements. Ensure the 2.8 V threshold aligns with your specific system voltage levels. Check for RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a fixed delay time is preferred over adjustable options. The BD46285G-TR is suitable for applications requiring a 2.8 V detection threshold. Consider the BD5228G-1 as a potential alternative if adjustable delay or different packaging is needed. Verify that the CMOS output drive capability meets your load requirements.

Part Context

This part belongs to the BD46 series of voltage detectors from ROHM Semiconductor. It is specifically engineered for single-channel voltage monitoring with high accuracy. The series is known for low power consumption and compact packaging options like SSOP-5. This model represents a fixed-threshold variant within the broader family of supervisory circuits.

Replacement Considerations

The BD5228G-1 is listed as a similar level replacement with the same package. Note that the BD5228G-1 offers an adjustable delay timer instead of a fixed 50 ms delay. Verify electrical compatibility regarding output types and operating voltage ranges before substitution.