BD49E44G-MTR

Overview

The BD49E44G-MTR is a standard voltage detector IC from ROHM Semiconductor, designed for automotive applications. It features a typical under-voltage detection threshold of 4.4 V with ±1% precision. The device operates within a reset active voltage range of 0.95 V to 10 V and utilizes a CMOS output type. Key electrical parameters include a circuit current of 0.60 µA (ON) and 0.85 µA (OFF) at Vs=4.8V, with a hysteresis voltage of Vs x 0.05. It supports an operating temperature range from -40°C to +105°C and is housed in an SSOP-5 package.

Feature Summary

• High accuracy detection with ±1% precision
• Ultra-low current consumption suitable for battery monitoring
• Automotive grade qualification supporting functional safety analysis

Applications

• Automotive power supply monitoring
• Battery voltage supervision
• System reset generation in vehicle electronics

Procurement Notes

Verify the specific suffix G-MTR against official ROHM documentation to confirm package type and reel quantity. Confirm AEC-Q100 compliance status for your specific application requirements. Check for end-of-life or not recommended for new design (NRND) status updates directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a fixed 4.4 V threshold with high precision is required for automotive systems. Ensure the CMOS output interface matches the downstream logic levels. Verify that the SSOP-5 package fits the PCB layout constraints and that the wide operating temperature range meets environmental specifications.

Part Context

This part belongs to the BD49ExxG-M series of high-accuracy, low-current voltage detectors. The series is characterized by copper wire bonding technology and is specifically developed for automotive use. It provides reliable supervision for critical power rails in demanding environments.

Replacement Considerations

BD5244G-1TR is listed as a replacement option with the same package and similar detection voltage, though it features an open-drain output and adjustable delay timer.