R3111Q312B-TR-FE

Supervisors Overview

The R3111Q312B-TR-FE is a low voltage detector manufactured by Nisshinbo Micro Devices. It operates within a supply voltage range of 0.7 V to 10 V and features a threshold voltage of 3.2 V. The device provides an open-drain output with a reset delay time of 100 µs. It functions without manual reset or watchdog timer capabilities but includes a battery backup switch. The component is housed in an SC-82AB-4 package, suitable for surface mount installation, and supports operation across temperatures from -40°C to +85°C.

Supervisors Feature Summary

• Provides precise voltage monitoring with a fixed 3.2 V detection threshold
• Features an open-drain output interface for system integration
• Includes a dedicated battery backup switch function
• Operates with ultra-low power consumption suitable for portable devices

Supervisors Applications

• Battery-powered electronic equipment monitoring
• Portable consumer electronics voltage supervision
• Embedded systems requiring low-voltage detection
• Mobile communication devices power management

Supervisors Procurement Notes

Verify the specific suffix B indicates the 3.2 V threshold variant when ordering. Confirm the TR-FE designation corresponds to the reel packaging format required for your assembly line. Ensure compatibility with the SC-82AB-4 footprint on your PCB layout. Cross-reference the manufacturer datasheet for exact pinout definitions before finalizing procurement specifications.

Supervisors Selection Notes

Select this component when a fixed 3.2 V threshold is required for under-voltage detection. The open-drain output necessitates an external pull-up resistor for proper logic level interfacing. Consider the 100 µs reset delay for timing-sensitive applications. Verify that the 10 V maximum input voltage aligns with your system's power rail specifications.

Supervisors Part Context

This part belongs to the R3111Q series of supervisory circuits designed for low-power applications. The series offers various threshold voltages to accommodate different system requirements. The R3111Q312B specifically denotes the 3.2 V threshold version within this family. These detectors are commonly used in battery-operated devices where power efficiency is critical.

Supervisors Replacement Considerations

Direct substitutes include other R3111Q variants with similar threshold voltages, such as the R3111Q311A or R3111Q313C, provided the threshold difference is acceptable. Verify that alternative parts maintain the same open-drain output configuration and SC-82AB-4 package dimensions for pin-to-pin compatibility.