BU4212G-TR

Overview

The BU4212G-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply lines. It operates within a supply voltage range of 0.7 V to 7 V and features a fixed threshold voltage of 1.2 V with an accuracy of ±1%. The device provides an open-drain output and includes an adjustable reset delay timer. It is housed in a compact SSOP-5 package and supports surface-mount installation. The component functions reliably across an extended temperature range from -40°C to +125°C, ensuring stable performance in various electronic applications.

Feature Summary

• Features an adjustable reset delay timer for customizable timing control
• Provides open-drain output capability for flexible logic interfacing
• Delivers high detection accuracy of ±1% for precise voltage monitoring

Applications

• Portable equipment requiring low-voltage supervision
• Battery-powered systems needing reliable power management
• General-purpose electronic circuits requiring voltage monitoring

Procurement Notes

Verify the current lifecycle status before procurement, as this component may be marked as Not Recommended for New Designs (NRND). Confirm that the SSOP-5 package dimensions align with your PCB footprint requirements. Ensure compatibility with the 1.2 V threshold and open-drain output configuration for your specific circuit design needs.

Selection Notes

Select this component when a fixed 1.2 V detection threshold with high precision is required. The adjustable delay feature allows customization for specific system startup or shutdown sequences. Consider the SSOP-5 package size for space-constrained designs. Verify that the open-drain output suits your downstream logic interface requirements.

Part Context

This part belongs to the BU42(43)xxG series of voltage detectors from ROHM Semiconductor. These devices are designed for low-voltage monitoring applications. The 'G' suffix typically indicates a lead-free and halogen-free compliant package variant. This series offers various threshold voltages to suit different power supply standards.

Replacement Considerations

The BD5212G-1 is identified as a recommended replacement with the same pinout. Verify functional equivalence regarding the 1.2 V threshold and open-drain output characteristics before substitution.