R3112N421A-TR-FE

Supervisors Overview

The R3112N421A-TR-FE is a low voltage detector manufactured by Nisshinbo Micro Devices, designed for monitoring single-channel input voltages. It operates within a supply voltage range of 700 mV to 6 V and features an open-drain output type with a reset delay time of 100 ms. The device has a threshold voltage of 4.2 V and an overvoltage threshold of 4.284 V, ensuring accurate power supervision. With a working supply current of 1.5 uA and accuracy of 2%, it supports battery backup switching and power failure detection. Operating temperatures range from -40 C to +85 C, housed in an SOT-23-5 package.

Supervisors Feature Summary

• Provides precise low voltage detection with a fixed threshold of 4.2 V for reliable power supervision.
• Features an open-drain output configuration suitable for interfacing with various logic families.
• Includes a built-in reset delay timer to prevent false triggering during power transitions.
• Supports battery backup switching and power failure detection for system integrity.

Supervisors Applications

• Monitoring power supply voltages in portable electronic devices
• Supervising battery-operated systems requiring low quiescent current
• Ensuring stable operation in industrial control circuits under varying load conditions

Supervisors Procurement Notes

Verify the exact part number R3112N421A-TR-FE against official Nisshinbo Micro Devices documentation to confirm specifications such as threshold voltage and package type. Ensure compatibility with your system's voltage requirements and operating temperature range. Check for RoHS compliance if required by your manufacturing standards. Confirm availability through authorized distributors to avoid counterfeit components.

Supervisors Selection Notes

Select this component when a fixed 4.2 V threshold is required for voltage monitoring. Consider its low supply current of 1.5 uA for battery-powered applications. The open-drain output requires appropriate pull-up resistor selection based on system logic levels. Verify that the 100 ms reset delay aligns with your system's startup timing requirements.

Supervisors Part Context

Part of the R3112N series of low voltage detectors from Nisshinbo Micro Devices. This series offers various threshold voltages and output types to suit different application needs. The R3112N421A-TR-FE specifically targets applications requiring a 4.2 V detection level with open-drain output capability.

Supervisors Replacement Considerations

Check for other R3112N series variants with similar threshold voltages but different output types (e.g., CMOS) if open-drain is not strictly required. Verify pinout compatibility before substituting with other manufacturers' voltage detectors.