XC6121F522MR-G

Supervisors Overview

The XC6121F522MR-G is a high-precision voltage detector manufactured by Torex Semiconductor, designed for monitoring single power supply rails. It operates within a supply voltage range of 1 V to 6 V and features a fixed detection threshold of 2.2 V. The device incorporates a watchdog timer function with selectable timeout periods ranging from 50 ms to 1.6 s, alongside a reset delay time adjustable between 3.13 ms and 400 ms. It utilizes an N-channel open-drain output configuration and maintains low current consumption, with a typical operating current of 12 µA and static current of 5 µA. The component is housed in a compact SOT-25-5 package and supports an operating temperature range from -40 °C to +85 °C.

Supervisors Feature Summary

• Integrates a watchdog timer function with multiple selectable timeout periods for system reliability monitoring
• Features an adjustable reset delay circuit to prevent false triggering during power-up transients
• Includes an enable pin (EN/ENB) allowing independent control over the watchdog function while maintaining voltage detection
• Utilizes laser trimming technology to ensure high accuracy of the internal fixed detection threshold

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 'MR-G' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the fixed 2.2 V threshold aligns precisely with the target rail voltage being monitored. Ensure the selected reset delay and watchdog timeout settings are compatible with the system's operational timing requirements before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a dedicated watchdog timer is required alongside voltage supervision in a minimal footprint. The SOT-25-5 package offers space efficiency compared to larger alternatives. Consider the 12 µA operating current for battery-powered applications where standby consumption is critical. Verify that the open-drain output interface matches the logic levels of the connected microcontroller or processor input pins.

Supervisors Part Context

This part belongs to the XC6121 series, which groups high-precision, low-current voltage detectors with integrated watchdog functions. The series employs CMOS process technology to achieve low power consumption without sacrificing detection accuracy. The XC6121 variant specifically denotes the inclusion of the watchdog feature, distinguishing it from basic voltage monitors like the XC6120 series. These devices are commonly used in portable electronics and industrial control systems requiring robust power management.

Supervisors Replacement Considerations

Cross-reference with other XC6121 series variants such as XC6121F521MR-G or XC6121F523MR-G if different threshold voltages are needed. Verify compatibility with XC6122 series parts, noting potential differences in enable pin configurations. Ensure any substitute maintains the same SOT-25-5 package and electrical characteristics to preserve board layout integrity.