BU45L274G-TL

Supervisors Overview

The BU45L274G-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 operates within a supply voltage range of 0.6 V to 6 V and consumes a typical operating current of 2.8 µA. It provides a CMOS open-drain output with a fixed reset delay time of 400 ms, eliminating the need for external timing capacitors. The component supports surface-mount installation in an SSOP-3 package and functions reliably across a temperature range of -40°C to +105°C.

Supervisors Feature Summary

• Built-in counter timer delay circuit removes the requirement for external capacitors for delay time setting.
• High detection accuracy of ±1% ensures precise voltage monitoring without manual reset functionality.
• Low current consumption design supports battery-powered applications with minimal power drain.

Supervisors Applications

• Portable electronic devices requiring low standby current
• Microprocessor system reset circuits
• Battery-operated equipment voltage supervision

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to obsolete status. Confirm RoHS compliance documentation matches specific production batches. Check for moisture sensitivity handling requirements during storage and assembly. Ensure replacement strategies account for end-of-life availability constraints.

Supervisors Selection Notes

Select this component when a fixed 2.7 V threshold with high precision is required for single-channel monitoring. Consider the integrated delay feature if external timing components are undesirable. Evaluate the SSOP-3 package size against board space limitations. Verify that the CMOS open-drain output interface aligns with downstream logic levels.

Supervisors Part Context

This part belongs to the BU45/BU46 series of highly accurate, low-current voltage detectors. These ICs are engineered for applications demanding precise supervision with minimal power impact. The series typically offers various threshold options and packaging configurations to suit diverse embedded system needs.

Supervisors Replacement Considerations

BD5227G-1TR is listed as a similar specification alternative with comparable threshold characteristics.