R3111Q121B-TR-FE

Supervisors Overview

The R3111Q121B-TR-FE is a low voltage detector manufactured by Nisshinbo Micro Devices, formerly Ricoh Electronic Devices. It functions as a power supply support circuit with an adjustable threshold voltage of 1.2V. The device features an open-drain output and operates within a supply voltage range of 0.7V to 10V. It includes a reset delay time of 100µs and maintains high accuracy of ±2%. The component is designed for battery backup applications and supports operation temperatures from -40°C to +85°C.

Supervisors Feature Summary

• Provides precise voltage monitoring with adjustable detection thresholds
• Features low quiescent current consumption for battery efficiency
• Includes internal reset delay timer for stable signal generation

Supervisors Applications

• Battery backup switching circuits
• Microcontroller system supervision
• Portable electronic device power management

Supervisors Procurement Notes

Verify the manufacturer designation on the datasheet, as Nisshinbo Micro Devices acquired the relevant semiconductor division from Ricoh. Confirm the specific package type and tolerance requirements against the official specification sheet before integration into the design.

Supervisors Selection Notes

Select this component when a fixed or adjustable low-voltage threshold near 1.2V is required. Ensure the input voltage range covers the minimum operating level of 0.7V. Verify that the open-drain output configuration matches the downstream logic interface requirements.

Supervisors Part Context

This part belongs to the R3111Q series of low voltage detectors. The series is characterized by ultra-low power consumption and high precision. The 'Q' suffix typically denotes specific package options and performance grades within the product line, distinguishing it from other Ricoh/Nisshinbo supervisory circuits.

Supervisors Replacement Considerations

Compatible substitutes include other parts from the R3111Q series with similar threshold voltages. Cross-reference pinouts and electrical characteristics carefully to ensure functional equivalence in the target application.