BD49E30G-MTR

Overview

The BD49E30G-MTR is a high-accuracy voltage detector designed for automotive applications, manufactured by ROHM Semiconductor. It features a fixed threshold voltage of 3.0V and utilizes CMOS output type for signal interfacing. The device operates within a supply voltage range up to 10V and includes a reset delay time of 100 microseconds. It is housed in an SSOP-5 package suitable for surface mount technology. The component supports an operating temperature range from -40°C to +105°C and does not include manual reset, watchdog timer, or battery backup switch functions.

Feature Summary

• High accuracy voltage detection specifically engineered for automotive environments
• CMOS output interface providing clear logic level signaling
• Compact SSOP-5 surface mount packaging for space-constrained designs

Applications

• Automotive power management systems requiring precise voltage monitoring
• Microprocessor reset circuits in vehicle electronic control units
• Battery voltage supervision in automotive infotainment and safety modules

Procurement Notes

Verify the current lifecycle status before procurement as this component may be marked as Not Recommended for New Designs. Confirm that the SSOP-5 package dimensions align with existing PCB footprints. Ensure the 3.0V threshold meets system requirements. Check for RoHS compliance documentation if required by specific regional regulations. Validate supply availability through authorized distributors due to potential end-of-life constraints.

Selection Notes

Select this component when a fixed 3.0V detection threshold is required for automotive-grade reliability. The CMOS output is suitable for direct interfacing with digital logic inputs without additional pull-up resistors. Consider the 100us reset delay for timing-sensitive applications. Evaluate the -40°C to +105°C temperature range against environmental conditions. Compare against alternative voltage detectors if adjustable thresholds or open-drain outputs are preferred.

Part Context

This part belongs to the BD49 series of voltage detectors from ROHM Semiconductor, which are optimized for automotive use. The series offers various threshold voltages to accommodate different rail monitoring needs. The BD49E30G-MTR specifically targets the 3.0V detection point within this family, maintaining consistent performance characteristics across the line while differing only in the programmed trip voltage.

Replacement Considerations

Check for BD49E29G-MTR for a 2.9V threshold or BD49E34G-TR for a 3.4V threshold within the same package. Verify compatibility with BD5230G-1 if open-drain output is acceptable, noting differences in precision and supply range.