BU4910G-TR

Supervisors Overview

The BU4910G-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply lines. It operates within a supply voltage range of 700 mV to 7 V and features a typical under-voltage detection threshold of 1.0 V with ±1% precision. The device provides a CMOS output type and functions without manual reset or watchdog timer capabilities. It exhibits low power consumption, with a circuit current of 0.40 μA during operation and 0.55 μA in standby mode at Vdet=4.8 V. The component supports an operating temperature range from -40°C to +125°C and is housed in an SSOP-5 package.

Supervisors Feature Summary

• CMOS output interface for direct logic compatibility
• High accuracy voltage detection with ±1% precision
• Low static current consumption for energy efficiency
• Wide operating temperature range suitable for industrial environments

Supervisors Applications

• Portable electronic devices requiring low-power supervision
• Battery-operated systems needing reliable voltage monitoring
• Industrial control circuits with wide temperature variations
• Consumer electronics utilizing CMOS logic families

Supervisors Procurement Notes

Verify the NRND (Not Recommended for New Designs) status before procurement, as this indicates the component is being phased out and may not be available for new production runs. Confirm that the SSOP-5 package and specific threshold voltage meet your design requirements, as alternative solutions like the BD5210G-1 series are recommended for future designs. Ensure compliance with RoHS directives and check lead times due to potential discontinuation risks.

Supervisors Selection Notes

Select the BU4910G-TR when a fixed 1.0 V threshold is required for single-channel voltage monitoring in space-constrained applications. Its CMOS output eliminates the need for external pull-up resistors, simplifying circuit design. Consider the low quiescent current for battery-powered systems where energy efficiency is critical. Evaluate the wide operating temperature range if the application involves harsh environmental conditions. Compare against newer alternatives like the BD5210G-1 if adjustable delay or open-drain outputs are preferred.

Supervisors Part Context

The BU4910G-TR belongs to ROHM's standard voltage detector family, specifically designed for supervisory applications in portable and industrial equipment. It is part of a broader lineup including variants with different thresholds such as the BU4912G and BU4913G. The 'TR' suffix denotes tape-and-reel packaging for automated assembly. This component serves as a legacy solution, with manufacturers recommending newer parts like the BD5210G-1 for new designs due to updated features and availability.

Supervisors Replacement Considerations

The BD5210G-1 is listed as a similar level replacement with the same SSOP-5 package. However, it features an open-drain output and adjustable delay timer, differing from the BU4910G-TR's CMOS output and no-delay configuration. Verify circuit compatibility regarding output drive requirements and timing specifications before substitution.