BU4812G-TR

Supervisors Overview

The BU4812G-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-input power supply lines. It operates within a supply voltage range of 0.7 V to 7 V and features a typical under-voltage detection threshold of 1.2 V with ±1% precision. The device utilizes an open-drain output type and lacks manual reset, watchdog timer, or battery backup switch functionalities. It is housed in an SSOP-5 package suitable for surface mount applications. The component supports an operating temperature range from -40°C to +125°C and consumes low circuit current, specified as 0.40 μA (ON) and 0.55 μA (OFF) at VDET=4.8V.

Supervisors Feature Summary

• Provides precise under-voltage detection with ±1% accuracy for reliable system supervision.
• Features an open-drain output interface compatible with various logic families.
• Operates across a wide industrial temperature range from -40°C to +125°C.
• Designed for low-power applications with minimal active and standby current consumption.

Supervisors Applications

• Monitoring power supply voltages in portable electronic devices
• Supervising battery-powered systems requiring low quiescent current
• Ensuring stable operation in embedded microcontroller circuits

Supervisors Procurement Notes

Verify the supply status carefully, as this component is classified as Not Recommended for New Designs (NRND). Confirm availability through authorized distributors for existing production needs. Ensure the ordering part number matches the specific tape-and-reel configuration required for your assembly process. Check RoHS compliance documentation if environmental regulations apply to your final product manufacturing.

Supervisors Selection Notes

Select this component when a fixed 1.2 V threshold is required for single-channel voltage monitoring. Consider the open-drain output capability for interfacing with different logic levels. Evaluate the SSOP-5 package size against PCB space constraints. Note that alternative models like BD5212G-1 are recommended for new designs due to similar specifications but improved availability status.

Supervisors Part Context

This part belongs to ROHM's standard voltage detector series, specifically engineered for power management support. It complements other supervisory ICs by offering simple, cost-effective over-voltage protection without complex timing features. The BU48xxG series is widely used in consumer electronics where basic power integrity checks are sufficient.

Supervisors Replacement Considerations

The BD5212G-1 is listed as a replacement with the same package and similar specifications. Verify pin compatibility and electrical parameters before substitution. The BD5212G-1 is recommended for new designs, whereas the BU4812G-TR is not.