BU45K292G-TL

Overview

The BU45K292G-TL is a voltage detector IC from the BU45/BU46 series manufactured by ROHM Semiconductor. It features a fixed threshold voltage of 2.9 V and an open-drain output type. The device operates within a supply voltage range up to 6 V with a maximum operating current of 2.8 uA. It provides a reset delay time of 200 ms and maintains an accuracy of 1%. The component is housed in an SSOP-3 package and supports surface mount installation. It functions without manual reset, watchdog timer, or battery backup switch capabilities.

Feature Summary

• Monitors single input voltage against a fixed threshold to generate reset signals
• Provides open-drain output for interfacing with digital logic circuits
• Operates with low power consumption suitable for battery-powered applications

Applications

• Microprocessor system supervision
• Battery voltage monitoring
• Power failure detection circuits

Procurement Notes

Verify the NRND status indicating the component is not recommended for new designs before procurement. Confirm package compatibility and electrical specifications against current design requirements. Check official datasheets for humidity sensitivity handling instructions. Ensure sourcing channels provide genuine ROHM Semiconductor products to avoid counterfeit components.

Selection Notes

Select this component when a fixed 2.9 V threshold is required for voltage monitoring. Consider the open-drain output configuration for logic interface needs. Evaluate the 200 ms delay time against system startup requirements. Assess the SSOP-3 package size constraints for PCB layout. Verify operational temperature ranges meet environmental conditions.

Part Context

This part belongs to the BU45/BU46 series of supervisory circuits designed for power management applications. It serves as a voltage detector within the broader portfolio of ROHM Semiconductor PMICs. The series offers various threshold voltages and packaging options to suit different electronic design needs.

Replacement Considerations

Consult official substitution guides for compatible voltage detectors with similar threshold and package specifications.