BU4831G-TR

Supervisors Overview

The BU4831G-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 an open-drain output type with a low reset active state. The device provides a typical under-voltage detection threshold of 3.1 V with a precision of ±1%. It includes hysteresis defined as VDET x 0.05 and supports a reset active voltage range from 0.7 V to 7 V. The component is housed in an SSOP-5 package, suitable for surface mount installation, and functions reliably across an operating temperature range of -40°C to +125°C.

Supervisors Feature Summary

• Provides precise under-voltage detection with a typical threshold of 3.1 V and ±1% accuracy.
• Features an open-drain output configuration compatible with various logic levels.
• Includes internal hysteresis to prevent output oscillation during voltage transitions.
• Operates over a wide supply voltage range from 0.7 V to 7 V.

Supervisors Applications

• Monitoring battery voltage levels in portable electronic devices
• Supervising power rails in embedded systems and microcontrollers
• Ensuring stable operation in industrial control circuits

Supervisors Procurement Notes

Verify the specific ordering suffix and package variant when sourcing replacements, as the BU4831G-TR is marked Not Recommended for New Designs (NRND). Confirm that the replacement component matches the required detection voltage and output characteristics. Check RoHS compliance status and ensure the substitute part is available in the necessary reel quantity. Validate thermal performance specifications against your application's environmental requirements before finalizing procurement decisions.

Supervisors Selection Notes

Select this component for applications requiring a fixed 3.1 V detection threshold with high precision. Consider the open-drain output capability if interfacing with different voltage domains. Evaluate the wide operating temperature range for harsh environments. Note that the NRND status suggests evaluating alternative parts for new designs while ensuring existing inventory meets long-term supply needs.

Supervisors Part Context

The BU4831G-TR belongs to ROHM's standard voltage detector series, specifically engineered for reliable power supervision. It is part of a family offering various detection thresholds, with this model targeting the 3.1 V range. The device integrates CMOS technology for low power consumption and compact packaging. Its design focuses on providing stable reset signals to protect sensitive circuitry from undervoltage conditions.

Supervisors Replacement Considerations

The BD5231G-1 is documented as a recommended replacement with the same SSOP-5 package. Verify that the BD5231G-1's adjustable delay timer does not conflict with system timing requirements. Ensure the slightly tighter reset active voltage range (0.8 V to 6 V) accommodates your specific supply rail variations.