R3118Q402C-TR-FE

Supervisors Overview

The R3118Q402C-TR-FE is a low voltage detector from the Nisshinbo Micro Devices R3118Q series, designed for monitoring power supply voltages. It features a dedicated SENSE pin and an output delay function controlled by an external capacitor. The device operates within a maximum supply voltage of 6 V and maintains high accuracy with a threshold tolerance of 1.5%. It supports reset delays of 80 µs or 100 ms and functions reliably across a temperature range of -40°C to +85°C. The component utilizes a CMOS or open-drain output type and is housed in a compact SC-88A-5 surface-mount package.

Supervisors Feature Summary

• Includes a dedicated SENSE pin for direct voltage monitoring
• Features adjustable output delay via external capacitor connection
• Provides high detection accuracy with 1.5% threshold tolerance

Supervisors Applications

• Monitoring battery backup switch circuits
• Supervising microcontroller power rails
• Ensuring system stability during power-up and power-down sequences

Supervisors Procurement Notes

Verify the specific suffix codes against official datasheets to confirm threshold voltage and package variations. Ensure compatibility with the SC-88A-5 footprint and validate that the required output delay configuration matches the external capacitor specifications provided in the design documentation.

Supervisors Selection Notes

Select this component when a dedicated sense pin is required for accurate voltage monitoring independent of load conditions. The adjustable delay feature allows customization for noise immunity without internal resistor networks. Verify that the 6 V maximum operating voltage aligns with the target system's power supply limits.

Supervisors Part Context

This part belongs to the R3118Q series of supervisory circuits, which are optimized for low-voltage detection applications. The series distinguishes itself through the inclusion of a separate sense input, allowing for precise monitoring of specific nodes rather than just the main supply rail. It serves as a critical component in systems requiring reliable reset generation under varying load conditions.

Supervisors Replacement Considerations

Direct substitutes include other parts within the R3118Q family with matching threshold voltages and package types. Cross-referencing with the R3118N series may be necessary if pinout compatibility differs, though functional equivalence regarding the sense pin and delay mechanism should be verified.