R3111N321A-TR-FE

Supervisors Overview

The R3111N321A-TR-FE is a low voltage detector manufactured by Nisshinbo Micro Devices, designed for monitoring single-input power supply voltages. It operates within a supply voltage range of 0.7 V to 10 V and features a threshold voltage of 3.2 V with an accuracy of 2%. The device draws a typical operating current of 1.2 µA and includes a backup function for battery retention. It utilizes an open-drain output type and provides power failure detection capabilities. The component is housed in an SOT-23-5 package and functions reliably across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates a backup switch mechanism to maintain internal state during power loss
• Provides power failure detection through an open-drain output interface
• Operates with ultra-low quiescent current consumption for energy efficiency

Supervisors Applications

• Battery-powered portable electronic devices requiring voltage supervision
• Embedded systems needing reliable power-failure detection signals
• Low-voltage monitoring circuits in consumer electronics

Supervisors Procurement Notes

Verify the specific threshold voltage and package configuration against official datasheets before integration. Confirm RoHS compliance status and manufacturing origin details required for your supply chain. Ensure the open-drain output compatibility matches your system's input logic levels. Check for any recent revisions or obsolescence notices from the manufacturer.

Supervisors Selection Notes

Select this component when a precise 3.2 V detection point is required for single-channel monitoring. Consider the 1.2 µA standby current for applications prioritizing minimal power drain. The SOT-23-5 footprint suits space-constrained designs. Evaluate the need for the backup feature if data retention during brownouts is critical for your application stability.

Supervisors Part Context

This part belongs to the R3111N series of supervisory circuits from Nisshinbo Micro Devices. The series focuses on low-power voltage detectors with high accuracy. Variants within the family differ primarily in threshold voltage settings while maintaining similar package and electrical characteristics. This specific model targets applications requiring stable monitoring at higher voltage levels compared to lower-threshold counterparts.

Supervisors Replacement Considerations

Consult official substitution lists for direct equivalents. Verify that alternative parts match the 3.2 V threshold, SOT-23-5 package, and open-drain output specification. Cross-reference pinout configurations to ensure compatibility without circuit redesign.