BD49E46G-MTR

Overview

The BD49E46G-MTR is a high-accuracy voltage detector IC designed for automotive applications, manufactured by ROHM Semiconductor. It features a fixed threshold voltage of 4.6 V with ±1% precision accuracy. The device operates within a supply voltage range of 0.95 V to 10 V and utilizes an SSOP-5 surface-mount package. It provides a CMOS output type with a low active reset state and lacks manual reset or watchdog timer functions. Certified under AEC-Q101 standards, it supports functional safety analysis and includes copper wire bonding technology.

Feature Summary

• High detection accuracy with ±1% precision tolerance
• Automotive-grade reliability certified under AEC-Q101
• Ultra-low current consumption for power efficiency
• Functional safety supportive design with copper wire bonding

Applications

• Automotive electronic system monitoring
• Voltage supervision in battery-powered modules
• Processor supervisor circuits in automotive ECUs

Procurement Notes

Verify the specific suffix MTR indicates tape-and-reel packaging configuration. Confirm AEC-Q101 qualification status matches project requirements. Check for NRND (Not Recommended for New Designs) status implications on long-term supply availability. Ensure SSOP-5 footprint compatibility with existing PCB layouts.

Selection Notes

Select this component when a fixed 4.6 V threshold is required for automotive voltage monitoring. Consider the CMOS output drive capability against load requirements. Evaluate the absence of delay timers if precise sequencing is needed. Verify thermal performance within the -40°C to +105°C operating range for automotive environments.

Part Context

This part belongs to the BD49ExxG-M series of high-accuracy voltage detectors. It shares family characteristics such as ultra-low current consumption and automotive certification. The series offers various threshold voltages from 2.3 V to 6.0 V in 0.1 V increments. All variants maintain consistent package dimensions and functional safety support attributes.

Replacement Considerations

BD48E46G-MTR serves as a parameter-equivalent alternative with open-drain output instead of CMOS.