BU45K412G-TL

Supervisors Overview

The BU45K412G-TL is a voltage detector IC from ROHM Semiconductor, designed for monitoring single power supply lines. It features a fixed threshold voltage of 4.1 V with an accuracy of ±1%. The device operates within a supply voltage range of 0.6 V to 6 V and provides an open-drain output. It includes a fixed reset delay timer of 200 ms and lacks manual reset or watchdog functions. The component consumes a typical operating current of 2.8 µA and is housed in an SSOP-3 package, suitable for surface mount applications across a temperature range of -40°C to +105°C.

Supervisors Feature Summary

• Monitors a single input voltage line with high precision detection capabilities.
• Provides a stable reset signal via an open-drain output interface.
• Ensures system stability through a fixed internal reset delay timer.

Supervisors Applications

• Microcontroller power supply supervision
• Embedded system reset circuitry
• Battery-operated device voltage monitoring

Supervisors Procurement Notes

Verify the obsolete status and availability constraints before procurement planning. Confirm that the SSOP-3 package dimensions align with existing PCB footprints. Ensure design compatibility with the 4.1 V threshold and 200 ms delay characteristics. Check for moisture sensitivity handling requirements during storage and assembly processes.

Supervisors Selection Notes

Select this component when a precise 4.1 V threshold is required for single-channel voltage monitoring. Consider the low quiescent current for battery-efficient designs. Verify that the open-drain output configuration meets logic level requirements. Evaluate the fixed delay against system startup timing needs.

Supervisors Part Context

This part belongs to the BU45/BU46 series of supervisory circuits. It is manufactured by ROHM Semiconductor and falls under the PMIC category. The specific suffix indicates tape and reel packaging options available for automated assembly processes.

Supervisors Replacement Considerations

The BD5241G-1TR is listed as a similar specification replacement option. Verify pinout compatibility and parameter alignment before substitution.