BU45K262G-TL

Supervisors Overview

The BU45K262G-TL is a fixed-delay voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features an N-channel open-drain output and monitors a single input with a threshold voltage of 2.6 V. The device provides a reset delay time of 200 ms and operates within a supply voltage range up to 6 V. It exhibits high accuracy of 1% and consumes a typical operating current of 2.8 uA. The component is housed in an SOT-23-3 package, supports surface mount installation, and functions reliably across a temperature range from -40°C to +105°C.

Supervisors Feature Summary

• Provides precise voltage monitoring with a fixed 2.6 V detection threshold and 1% accuracy.
• Features an N-channel open-drain output suitable for interfacing with digital logic systems.
• Delivers a consistent 200 ms reset delay timer to ensure stable system recovery after power events.
• Operates with ultra-low power consumption of 2.8 uA, optimizing battery life in portable devices.

Supervisors Applications

• Portable electronic devices requiring low-power supervision
• Battery-operated equipment needing reliable under-voltage detection
• General-purpose supervisory circuits in consumer electronics

Supervisors Procurement Notes

Verify the specific suffix TL indicates tape-and-reel packaging configuration when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Check current lifecycle status as this part may be designated Not Recommended for New Designs (NRND). Ensure compatibility with existing PCB footprint designs utilizing the SOT-23-3 package dimensions. Validate thermal performance requirements against the specified maximum operating temperature of +105°C.

Supervisors Selection Notes

Select this component when a fixed 2.6 V threshold is required for single-input voltage monitoring. Consider the 200 ms fixed delay characteristic for applications where adjustable timing is unnecessary. Evaluate the 2.8 uA quiescent current against system power budgets for battery-sensitive designs. Verify that the open-drain output architecture aligns with the downstream logic interface requirements. Assess the -40°C to +105°C operating range against environmental conditions.

Supervisors Part Context

This component belongs to the BU45/BU46 series of supervisory circuits from ROHM Semiconductor. These devices are engineered for compact surface-mount applications requiring minimal external components. The series emphasizes low power consumption and high precision for modern portable electronics. The BU45K262G-TL specifically addresses needs for fixed-threshold detection without manual reset or watchdog functionalities.

Supervisors Replacement Considerations

The BD5226G-1 is listed as a similar specification replacement. Note that the substitute uses an SSOP5 package instead of SSOP3/SOT-23-3, requiring layout modification. The replacement offers adjustable delay rather than fixed 200 ms timing. Verify pinout compatibility and electrical parameter alignment before substitution.