R3111N091A-TR-FE

Supervisors Overview

The R3111N091A-TR-FE is a low voltage detector manufactured by Nisshinbo Micro Devices. It operates within a supply voltage range of 700 mV to 10 V and features a threshold voltage of 900 mV with an accuracy of 2%. The device consumes 1 uA of operating current and includes a backup function for battery monitoring. It provides power failure detection and utilizes an open-drain output type without manual reset or watchdog timer capabilities.

Supervisors Feature Summary

• Monitors single input voltage levels for system supervision
• Provides open-drain output signaling for low voltage conditions
• Supports battery backup switching functionality
• Detects power failure events automatically

Supervisors Applications

• Battery-powered device voltage monitoring
• Low voltage detection in portable electronics
• Power supply supervision circuits
• System reset generation for microcontrollers

Supervisors Procurement Notes

Verify the specific threshold voltage requirement matches the application needs, as this variant is fixed at 900 mV. Confirm package compatibility with SOT-23-5 footprint constraints. Ensure operating temperature range of -40 C to +85 C aligns with environmental specifications. Check RoHS compliance documentation if required for regulatory standards.

Supervisors Selection Notes

Select this component when a precise 900 mV detection point is necessary for low-voltage systems. Consider the 1 uA quiescent current for battery life optimization. The open-drain output requires appropriate pull-up resistor configuration. Verify that the absence of a watchdog timer meets system reliability requirements.

Supervisors Part Context

This part belongs to the R3111N series of supervisory circuits from Nisshinbo Micro Devices. The series offers various threshold voltages for different monitoring applications. The R3111N091A-TR-FE specifically targets ultra-low voltage detection scenarios requiring high accuracy and minimal power consumption.

Supervisors Replacement Considerations

Other R3111N variants with different threshold voltages may serve as functional substitutes if voltage levels differ. Verify pinout compatibility with SOT-23-5 packages. Ensure electrical characteristics such as operating current and accuracy meet design specifications.