BU46L274G-TL

Supervisors Overview

The BU46L274G-TL is a voltage detector IC from the ROHM BU45/BU46 series, designed for monitoring single-input power supplies. It features a fixed threshold voltage of 2.7 V with an accuracy of ±1%. The device incorporates a built-in counter timer delay circuit, eliminating the need for external capacitors, and provides a reset delay time of 400 ms. It operates within a supply voltage range up to 6 V and consumes a typical operating current of 2.8 µA. The component utilizes a CMOS output type 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

• Built-in counter timer delay circuit removes the requirement for external timing capacitors
• High detection accuracy of ±1% ensures precise voltage monitoring
• Low current consumption design supports battery-powered applications
• CMOS output interface compatible with standard digital logic

Supervisors Applications

• Portable electronic devices requiring low standby current
• Microprocessor system reset circuits
• Battery voltage monitoring systems
• Embedded controller supervision

Supervisors Procurement Notes

Verify component authenticity through authorized channels as this part is marked obsolete. Confirm package integrity and pin alignment against the SSOP-3 specification before integration. Check RoHS compliance documentation for regulatory adherence. Ensure storage conditions respect humidity sensitivity levels to prevent moisture-induced damage during soldering processes.

Supervisors Selection Notes

Select this component when a fixed 2.7 V threshold with high precision is required. The integrated delay circuit simplifies board layout by removing external passive components. Consider the 2.8 µA quiescent current for energy-sensitive designs. Verify that the CMOS output drive capability meets downstream logic requirements without additional buffering.

Supervisors Part Context

This voltage detector belongs to the BU45/BU46 family of supervisory circuits manufactured by ROHM Semiconductor. These ICs are engineered for compact designs using minimal external components. The series offers various threshold voltages and delay times to suit different application needs while maintaining consistent low-power performance characteristics.

Supervisors Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model in the provided documentation.