BU4814G-TR

Supervisors Overview

The BU4814G-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input supply voltages. It features an open-drain output and operates within a supply voltage range of 0.7 V to 7 V. The typical under-voltage detection threshold is set at 1.4 V with a precision of ±1%. The device functions reliably across an extended temperature range from -40°C to +125°C. It consumes minimal current, specified at 0.40 μA in the ON state and 0.55 μA in the OFF state at VDET=4.8V. The component is housed in an SSOP-5 package and does not include manual reset, watchdog timer, or battery backup switch functionalities.

Supervisors Feature Summary

• CMOS technology ensures low power consumption suitable for battery-operated applications
• Open-drain output configuration allows flexible interfacing with various logic families
• High accuracy voltage detection with ±1% precision for reliable system supervision

Supervisors Applications

• Portable electronic devices requiring efficient power management
• Microprocessor and microcontroller system reset circuits
• Battery-powered equipment needing under-voltage protection

Supervisors Procurement Notes

Verify the specific ordering suffix and package type against the official datasheet before procurement. Confirm that the NRND status aligns with long-term availability requirements for your design lifecycle. Ensure compatibility with existing PCB footprints and reflow soldering profiles specified for the SSOP-5 package.

Supervisors Selection Notes

Select this component when a precise 1.4 V detection threshold is required for single-channel voltage monitoring. Consider the open-drain output capability if level shifting or wired-OR connections are necessary in the circuit design. Evaluate the low standby current specifications against strict power budget constraints for portable applications.

Supervisors Part Context

This part belongs to the BU48 series of standard voltage detectors from ROHM Semiconductor. It is categorized under supervisory circuits and PMICs. The device is intended for general-purpose voltage monitoring in consumer and industrial electronics where compact size and low power are critical design parameters.

Supervisors Replacement Considerations

The BD5214G-1 is listed as a similar level replacement with the same SSOP-5 package. Verify electrical parameter compatibility, particularly the detection voltage and output characteristics, before substituting.