R3112Q291A-TR-FE

Supervisors Overview

The R3112Q291A-TR-FE is a low voltage detector with an output delay function, manufactured by Nisshinbo Micro Devices. It operates within a supply voltage range of 0.7 V to 6 V and features a threshold voltage of 2.9 V. The device provides a reset delay time of 100 ms and maintains an accuracy of 2%. It draws a working power supply current of 1 uA and supports a maximum power dissipation of 380 mW. The component includes battery backup switch functionality and power failure detection capabilities.

Supervisors Feature Summary

• Integrates an output delay function utilizing an external capacitor for timing control.
• Supports battery backup switching to maintain monitoring during power transitions.
• Includes dedicated power failure detection circuitry for system protection.

Supervisors Applications

• Monitoring battery voltage levels in portable electronic devices
• Supervising power supply rails in embedded systems
• Providing reset signals for microcontrollers during brown-out events

Supervisors Procurement Notes

Verify the specific suffix codes against the official datasheet to confirm pin configuration and electrical parameters. Ensure the ordering code matches the required package type and tolerance specifications. Cross-reference the manufacturer's latest documentation to validate compliance requirements and environmental certifications before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a precise 2.9 V threshold is required for low-voltage supervision. Consider the 1 uA operating current for battery-sensitive applications. Verify that the SC-82AB-4 package fits the board layout constraints. Confirm compatibility with the system's reset delay requirements provided by the external capacitor method.

Supervisors Part Context

This part belongs to the R3112Q series of supervisory circuits designed for power management ICs. It is categorized under voltage detectors within the broader PMIC family. The series focuses on low-power operation and compact packaging solutions suitable for space-constrained consumer and industrial electronics requiring reliable voltage monitoring.

Supervisors Replacement Considerations

Check for other R3112Q variants with different threshold voltages if the 2.9 V setting does not match the target rail. Verify pinout compatibility with alternative packages such as SOT-23-5 if form factor changes are permissible. Consult the manufacturer's substitution guide for electrically equivalent parts with similar delay characteristics.