BU45K462G-TL

Supervisors Overview

The BU45K462G-TL is a fixed-delay voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply voltages. It features an open-drain output and operates within a detection voltage range of 0.6 V to 6 V. The typical under-voltage detection threshold is set at 4.6 V with a precision of ±1%. The device incorporates a fixed reset delay timer of 200 ms and maintains a low active state during reset conditions. Power consumption is characterized by a circuit current of 2.3 μA in the on-state and 2.8 μA in the off-state. It is housed in an SSOP-3 package and supports operation from -40°C to +105°C.

Supervisors Feature Summary

• Fixed 200 ms reset delay timer ensures stable power-on sequencing without external components.
• Open-drain output interface allows flexible connection to various logic families.
• Low power consumption design suitable for battery-operated applications.
• High precision voltage detection with ±1% accuracy for reliable system supervision.

Supervisors Applications

• Power supply monitoring in portable electronic devices
• System reset generation for microcontrollers and digital circuits
• Voltage supervision in industrial control equipment
• Battery backup switching circuits

Supervisors Procurement Notes

Verify the specific suffix TL indicates tape-and-reel packaging when ordering. Confirm the NRND status aligns with long-term support requirements for existing designs. Ensure compatibility with SSOP-3 footprint constraints during PCB layout. Check RoHS compliance documentation for regulatory adherence. Validate operating temperature range against environmental specifications.

Supervisors Selection Notes

Select this component when a fixed 200 ms delay is required for power-up stability. Choose based on the 4.6 V detection threshold matching the target supply rail. Consider the open-drain output for interfacing with 3.3 V or 5 V logic systems. Evaluate the low standby current for energy-efficient designs. Verify package availability and lead times given the non-recommended-for-new-designs status.

Supervisors Part Context

This part belongs to the BU45/BU46 series of voltage detectors from ROHM Semiconductor. These devices are engineered for supervisory functions in compact electronic systems. The series offers various detection voltages and delay options to suit different application needs. The BU45K462G-TL specifically targets applications requiring precise voltage monitoring with a standard delay period.

Supervisors Replacement Considerations

The BD5246G-1 is listed as a similar specification replacement. Verify pinout compatibility and electrical parameters before substitution. Note that the BD5246G-1 offers adjustable delay and different package options. Ensure the replacement meets all functional requirements of the original design.

Supervisors FAQ

What is the reset active state of the BU45K462G-TL?

The reset output remains in a low active state when the detected voltage is below the threshold.

Does the BU45K462G-TL include a manual reset function?

No, the device does not feature a manual reset input; it relies solely on voltage detection.

What is the maximum operating voltage for this voltage detector?

The maximum operating voltage is 6 V, allowing it to monitor supplies up to this limit.