XC6123E445MR-G

Supervisors Overview

The XC6123E445MR-G is a high-precision voltage monitor from Torex Semiconductor, designed for single-input supervision. It features a fixed threshold voltage of 4.4 V and operates within a supply voltage range of 1 V to 6 V. The device incorporates an integrated watchdog timer with selectable timeout periods and provides an active-low CMOS open-drain output. Key electrical parameters include a typical operating current of 12 µA and a static current of 5 µA. It supports a reset delay time of 200 ms and functions reliably across an industrial temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates a watchdog timer function controllable via the EN/ENB pin, allowing the watchdog to be disabled while the voltage detector remains active.
• Utilizes laser trimming technology to ensure high-precision detection voltages with minimal temperature drift characteristics.
• Features a built-in release delay circuit that eliminates the need for external components to generate delayed output signals.

Supervisors Applications

• Microprocessor watchdog monitoring and reset circuits
• Memory battery backup circuits
• System power-on reset circuits
• Power failure detection systems

Supervisors Procurement Notes

Verify the specific suffix 'E' indicates the correct 4.4 V threshold voltage variant, as the XC6123 series uses alphanumeric codes for different detect voltages. Confirm RoHS compliance status through official manufacturer documentation or certified datasheets prior to integration. Ensure the SOT-25-5 package footprint matches the target PCB layout requirements for surface-mount assembly.

Supervisors Selection Notes

Select this component when a fixed 4.4 V supervision level is required for systems operating between 1 V and 6 V. The integrated watchdog functionality makes it suitable for applications needing automated system recovery without external logic. Consider the low quiescent current for battery-powered designs. Verify that the open-drain output configuration aligns with the downstream microcontroller or logic input requirements.

Supervisors Part Context

This part belongs to the XC6123 series of voltage detectors with watchdog functions. The series utilizes CMOS process technology to achieve high precision and low current consumption. The XC6123 variants are distinguished by their internally fixed detect voltages, which are set in increments using laser trimming. This specific model represents one of the standard threshold options available within the family.

Supervisors Replacement Considerations

Cross-reference with other XC6123 series parts such as XC6123C444MR-G or XC6123E544MR if different threshold voltages are acceptable. Verify that substitute parts maintain the same SOT-25-5 package and electrical specifications to ensure pin-to-pin compatibility and functional equivalence in the existing design.