BU4912G-TR

Supervisors Overview

The BU4912G-TR is a CMOS voltage detector manufactured by ROHM Semiconductor, designed for monitoring power supply voltages in electronic circuits. It operates within a supply voltage range of 0.7 V to 7 V and features a typical threshold voltage of 1.2 V with ±1% precision. The device provides a CMOS output type without manual reset or watchdog timer capabilities. It consumes a maximum operating current of 550 nA and functions reliably across an extended temperature range from -40°C to +125°C. Packaged in an SSOP-5 format on a reel, this component is classified as not recommended for new designs.

Supervisors Feature Summary

• CMOS output interface for direct logic compatibility
• High accuracy voltage detection with ±1% precision
• Ultra-low power consumption suitable for battery applications
• Extended industrial temperature rating for harsh environments

Supervisors Applications

• Portable computer systems
• Laptop power management
• Test and measurement instruments
• Battery-powered equipment

Supervisors Procurement Notes

Verify the obsolete status before procurement, as this part is marked Not Recommended for New Designs (NRND). Confirm availability through authorized distributors for existing production support. Ensure the SSOP-5 package matches your PCB footprint requirements. Check RoHS compliance documentation if required for specific regulatory standards. Validate that the CMOS output level meets your system's input voltage thresholds.

Supervisors Selection Notes

Select this component only for legacy system maintenance or replacement where the original design specified the BU4912G-TR. Consider the BD5212G-1 as a potential alternative if redesigning, noting differences in output type and delay features. Evaluate the 1.2 V threshold against your specific rail voltage requirements. Assess whether the lack of adjustable delay or watchdog functionality meets your system's safety needs.

Supervisors Part Context

This component belongs to the BU49xxG series of standard voltage detectors from ROHM Semiconductor. These devices are engineered for microprocessor power supply supervision. The series typically offers various threshold voltages to accommodate different logic families. The BU4912G-TR specifically targets low-voltage detection applications requiring high precision and low standby current.

Supervisors Replacement Considerations

The BD5212G-1 is listed as a similar specification replacement. Note that the BD5212G-1 features an open-drain output and adjustable delay, differing from the BU4912G-TR's fixed CMOS output.