XC6123C645MR-G

Supervisors Overview

The XC6123C645MR-G is a high-precision voltage monitor with an integrated watchdog timer manufactured by Torex Semiconductor. It operates within a supply voltage range of 1 V to 6 V and features a detection threshold of 4.5 V. The device utilizes CMOS technology to achieve low current consumption, with a typical operating current of 12 uA and static current of 5 uA. It provides an active-low open-drain output and includes a reset delay time of 200 ms. The component is housed in a compact SOT-25-5 package and functions reliably across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a voltage detector with a built-in watchdog timer function for system reliability.
• Features a dedicated EN/ENB pin to independently control the ON/OFF state of the watchdog while maintaining voltage monitoring.
• Provides an active-low open-drain output signal upon detection of power failure or timeout events.
• Utilizes CMOS process technology to ensure high precision and minimal power consumption.

Supervisors Applications

• Battery-powered portable electronic devices requiring low standby current.
• Embedded systems needing independent watchdog supervision for microcontroller stability.
• Industrial equipment operating within extended temperature environments.
• Consumer electronics utilizing single-supply voltage architectures.

Supervisors Procurement Notes

Verify the specific threshold voltage of 4.5 V matches the target application requirements before integration. Confirm that the SOT-25-5 package dimensions align with the PCB footprint design. Ensure the active-low open-drain output configuration is compatible with the downstream logic levels. Check that the 200 ms reset delay meets the system startup timing constraints. Validate compliance with RoHS directives if required by the end product specifications.

Supervisors Selection Notes

Select this component when a combined voltage supervisor and watchdog timer is required in a minimal footprint. The 4.5 V threshold is suitable for monitoring standard 3.3 V or 5 V rails with appropriate margins. Consider the 12 uA operating current for battery life optimization compared to higher consumption alternatives. The EN/ENB control pin offers flexibility for power management strategies where the watchdog can be disabled during specific low-power modes without affecting voltage monitoring.

Supervisors Part Context

This part belongs to the XC6123 series of voltage detectors with watchdog functions from Torex Semiconductor. The series is designed for applications demanding high accuracy and low power consumption. The XC6123 variant specifically integrates the watchdog timer alongside the voltage monitoring circuitry. Other members of the series differ primarily in their fixed detection thresholds and package options, allowing designers to select the precise voltage level needed for their specific power rail supervision tasks.

Supervisors Replacement Considerations

Cross-reference with other XC6123 series variants such as XC6123C643MR-G or XC6123C647MR-G if different threshold voltages are acceptable. Verify that any substitute maintains the same SOT-25-5 package and pinout compatibility. Ensure the replacement part supports the required 4.5 V threshold or adjust the system design accordingly. Confirm that the replacement also offers the active-low open-drain output and similar current consumption characteristics.