BD71L4LHFV-1GTR

Overview

The BD71L4LHFV-1GTR is a CMOS over-voltage detector IC manufactured by ROHM Semiconductor. It features a high-accuracy threshold voltage of 4.05 V with an accuracy of 0.8%. The device operates within a supply voltage range up to 6 V and supports a minimum operating temperature of -40°C and a maximum of +85°C. It provides one monitored input with an active low, open-drain output type. The component is housed in a 5-HVSOF package and is AEC-Q100 qualified for automotive applications.

Feature Summary

• High accuracy over-voltage detection with 0.8% tolerance
• AEC-Q100 qualified for automotive reliability standards
• Active low open-drain output configuration
• Compact 5-HVSOF surface-mount packaging

Applications

• Automotive battery protection systems
• Lithium-ion battery overvoltage monitoring
• General purpose supervisory circuits in automotive electronics

Procurement Notes

Verify the specific suffix '1GTR' against the official ROHM datasheet to confirm the exact threshold voltage and package variant. Ensure compatibility with AEC-Q100 requirements if used in automotive contexts. Cross-reference the part number with authorized distributors to avoid counterfeit components. Confirm lead times and availability directly with suppliers as stock levels fluctuate.

Selection Notes

Select this component when a precise 4.05 V over-voltage threshold is required for battery or power line monitoring. The AEC-Q100 qualification makes it suitable for automotive environments where reliability is critical. Consider the open-drain output for flexible interfacing with microcontrollers or other logic levels. Verify that the 6 V maximum supply voltage aligns with the system's operational range.

Part Context

This part belongs to ROHM's series of CMOS over-voltage detector ICs designed for monitoring power supplies and batteries. The BD71L4LHFV-1GTR specifically targets applications requiring high accuracy and automotive-grade reliability. It serves as a protective element in power management systems, ensuring that voltage levels do not exceed safe limits for connected components.

Replacement Considerations

Check for direct substitutes within the BD71L4L family from ROHM. Verify pinout compatibility and threshold voltage accuracy when considering alternatives from other manufacturers. Ensure any replacement maintains AEC-Q100 qualification if used in automotive applications.