XC6121C237MG-G

Supervisors Overview

The XC6121C237MG-G is a high-precision voltage detector with watchdog function and ON/OFF control from the Torex Semiconductor XC6121 series. It utilizes CMOS process technology to provide low current consumption. The detect voltage is internally fixed at 3.7V using laser trimming technology. The device features an N-channel open drain output that goes low when the detected voltage falls below the threshold. It includes a built-in delay circuit for release delay time without external components. The EN/ENB pin allows independent control of the watchdog function while maintaining voltage detection operation.

Supervisors Feature Summary

• Integrated watchdog timer with timeout period settings
• ON/OFF control capability via dedicated EN/ENB pin
• High-precision detection voltage set by laser trimming
• Built-in release delay circuit eliminating external components

Supervisors Applications

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

Supervisors Procurement Notes

Verify the specific suffix MG-G against the official datasheet to confirm the SOT-25-5 package configuration. Ensure the C-series designation aligns with the required 3.7V threshold voltage. Confirm RoHS compliance status through manufacturer documentation prior to integration into production designs.

Supervisors Selection Notes

Select this component when a fixed 3.7V detection threshold is required alongside integrated watchdog functionality. The SOT-25-5 package suits space-constrained surface-mount applications. Consider the internal pull-up/pull-down characteristics of the EN/ENB pin if leaving it unconnected in the design.

Supervisors Part Context

This part belongs to the XC6121/XC6122/XC6123/XC6124 series of voltage detectors. The XC6121 variant specifically denotes the standard watchdog version with ON/OFF control capabilities. The series shares common architectural features including reference voltage sources, comparators, and output drivers within a single CMOS IC.

Supervisors Replacement Considerations

XC6121A237MG-G

Supervisors FAQ

How is the watchdog function controlled?

The watchdog function can be turned ON or OFF independently of the voltage detector operation by setting the EN/ENB pin to a high or low level.

What is the output configuration?

The device features an N-channel open drain output configuration that outputs a low signal when the detected voltage falls below the threshold.