BD45E245G-MTR

Overview

The BD45E245G-MTR is a fixed delay voltage detector manufactured by ROHM Semiconductor, designed for automotive applications. It features a threshold voltage of 2.4 V with ±1% accuracy and an open drain output type. The device includes a manual reset function and a fixed reset delay timer of 50 msec. It operates within a supply voltage range of 0.95 V to 10 V and supports a circuit current of 0.80 µA (ON) and 0.85 µA (OFF) at VDET=4.8V. The component is housed in an SSOP-5 package, complies with AEC-Q100 standards, and functions across a temperature range of -40°C to +105°C.

Feature Summary

• Automotive-grade supervision with AEC-Q100 qualification
• Ultra-low current consumption for battery efficiency
• Built-in counter timer eliminating external delay capacitors
• Manual reset capability for system control

Applications

• Automotive electronic control unit power monitoring
• Battery backup system supervision
• Microprocessor reset circuit generation
• Under-voltage detection in vehicle networks

Procurement Notes

Verify the specific suffix G-MTR against the official datasheet to confirm package and tape-and-reel specifications. Confirm functional safety classification as FS supportive if required for your design. Check current lifecycle status as automotive components may undergo obsolescence transitions. Ensure compatibility with your PCB footprint for the SSOP-5 package before finalizing procurement orders.

Selection Notes

Select this component when a precise 2.4 V threshold with high accuracy is required for automotive systems. The open drain output allows flexible interfacing with various logic levels. Consider the manual reset feature if system recovery requires user intervention. Verify that the 50 msec delay meets your startup timing requirements compared to faster alternatives like the BD49 series.

Part Context

This part belongs to the BD45ExxxG-M series of fixed delay voltage detectors from ROHM. It is specifically engineered for automotive environments, offering robust performance under wide temperature variations. The series emphasizes low power consumption and compact packaging, making it suitable for space-constrained automotive electronics requiring reliable power supervision.

Replacement Considerations

Check for parameter-equivalent parts such as BD45251G-TR if different thresholds are acceptable. Verify pinout compatibility with existing designs when substituting. Ensure the replacement maintains AEC-Q100 qualification for automotive use cases.