BU4813G-TR

Supervisors Overview

The BU4813G-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 0.7 V to 7 V and features an open-drain output type with low active state logic. The device provides a typical under-voltage detection threshold of 1.3 V with a precision accuracy of ±1%. It includes hysteresis voltage defined as VDET multiplied by 0.05 and supports a wide operating temperature range from -40°C to +125°C. The component is housed in an SSOP-5 package.

Supervisors Feature Summary

• CMOS technology ensures low power consumption during operation
• Open-drain output configuration allows flexible interfacing with various logic families
• Integrated hysteresis prevents output oscillation near the detection threshold
• Wide operating temperature range supports industrial and automotive environments

Supervisors Applications

• Microprocessor reset circuits
• Battery-powered system supervision
• Portable electronic device power management
• Industrial control system voltage monitoring

Supervisors Procurement Notes

Verify the NRND status before procurement, as this component is not recommended for new designs. Confirm package compatibility and electrical specifications against current project requirements. Check for end-of-life notices or obsolescence warnings from the manufacturer. Ensure that any substitute components meet identical pinout and performance criteria. Validate RoHS compliance documentation for regulatory adherence.

Supervisors Selection Notes

Select this component when a fixed 1.3 V detection threshold is required for systems operating between 0.7 V and 7 V. Consider the open-drain output if external pull-up resistors are acceptable in the design. Evaluate the ±1% accuracy requirement against system tolerance needs. Verify that the SSOP-5 package fits the available PCB footprint. Assess thermal performance within the specified -40°C to +125°C range.

Supervisors Part Context

This part belongs to the BU48xxG series of standard voltage detectors from ROHM Semiconductor. These devices are commonly used in applications requiring reliable power supply monitoring without complex configuration. The series offers various threshold voltages to suit different logic levels and battery chemistries. The BU4813G-TR specifically targets applications needing a 1.3 V reference point.

Supervisors Replacement Considerations

The BD5213G-1 is a confirmed replacement option with the same SSOP-5 package and 1.3 V detection threshold. Note differences in reset delay timer availability and output current capabilities. Verify supply voltage ranges and operating temperature limits match application constraints.