R3112Q431A-TR-FE

Supervisors Overview

The R3112Q431A-TR-FE is a low voltage detector manufactured by Nisshinbo Micro Devices, designed for monitoring single-channel input voltages. It features an open-drain output type and includes a reset delay time of 100 ms. The device operates within a power supply range of 700 mV to 6 V maximum. It has a threshold voltage of 4.1 V with an accuracy of 2%. The quiescent current is specified at 1.5 uA. The component supports battery backup switching and power failure detection. It functions without manual reset or watchdog timer capabilities. The operating temperature range spans from -40°C to +85°C.

Supervisors Feature Summary

• Provides low voltage detection with an output capacitor type delay mechanism
• Features open-drain output configuration for flexible interfacing
• Includes dedicated battery backup switch functionality
• Supports power failure detection capabilities

Supervisors Applications

• Monitoring power supply rails in portable electronic devices
• Battery management systems requiring backup switching
• Embedded systems needing reliable voltage supervision
• Circuit protection against under-voltage conditions

Supervisors Procurement Notes

Verify the specific suffix codes on the datasheet to confirm package type and tape/reel specifications before ordering. Ensure that the required threshold voltage matches the application needs, as this variant is fixed at 4.1 V. Check manufacturing lead times and minimum order quantities associated with the reel packaging. Confirm RoHS compliance status if required by your supply chain standards. Validate that the SC-82AB-4 package fits your PCB layout constraints.

Supervisors Selection Notes

Select this component when a fixed 4.1 V threshold is appropriate for the monitored rail. Consider the 1.5 uA quiescent current for low-power applications. The open-drain output requires an external pull-up resistor for proper logic level translation. Verify that the 100 ms reset delay meets the system startup timing requirements. Ensure the operating temperature range covers the environmental conditions of the end-use product.

Supervisors Part Context

This part belongs to the R3112Q series of low voltage detectors from Nisshinbo Micro Devices. The series offers various threshold voltages and packages. The R3112Q431A-TR-FE specifically uses the SC-82AB-4 package. It is categorized under PMIC supervisory circuits. The series is designed for efficient power management in compact electronic designs.

Supervisors Replacement Considerations

Compatible substitutes include other variants within the R3112Q series with different threshold voltages but similar package and output types. Cross-reference with R3112D series parts if push-pull outputs are acceptable instead of open-drain. Verify pinout compatibility before substituting with other manufacturers' voltage detectors.