XC6122A221MG-G

Supervisors Overview

The XC6122A221MG-G is a high-precision voltage detector with watchdog function and ON/OFF control from Torex Semiconductor Ltd. It operates within a supply voltage range of 1.0V to 6.0V and features a fixed detect voltage threshold of 2.2V. The device incorporates an N-channel open-drain output configuration and utilizes laser trimming technology for accuracy. It includes a built-in delay circuit for release delay time and supports watchdog timeout periods ranging from 50ms to 1.6s. The component is housed in a SOT-25-5 package and functions reliably across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates a watchdog timer function with selectable timeout periods for system monitoring
• Features an EN/ENB pin that allows independent control over the watchdog function while maintaining voltage detection
• Utilizes CMOS process technology to achieve low current consumption and high precision via laser trimming
• Provides an N-channel open-drain output signal that goes low upon voltage detection

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 codes against official datasheets to confirm package type and electrical parameters, as variations exist within the series. Ensure compatibility with the target operating voltage range and required watchdog timeout settings before integration. Cross-reference the manufacturer's latest documentation to confirm RoHS compliance and environmental classifications for the specific batch.

Supervisors Selection Notes

Select this component when a single-channel voltage monitor with integrated watchdog functionality is required. The fixed 2.2V threshold suits applications where this specific trip point aligns with system requirements. Consider the SOT-25-5 package for space-constrained surface-mount designs. Verify that the open-drain output interface matches the logic levels of the connected microprocessor or controller.

Supervisors Part Context

This part belongs to the XC6121/XC6122/XC6123/XC6124 series of voltage detectors. The XC6122 variant specifically includes a watchdog timer function controlled by the EN/ENB pin. The series is designed for high-precision monitoring in portable and industrial electronics, offering low power consumption and robust performance across varying temperature conditions.

Supervisors Replacement Considerations

XC6121A221MG-G

Supervisors FAQ

How is the watchdog function enabled or disabled?

The watchdog function can be turned on or off by setting the EN/ENB pin to a high or low level, respectively, while the voltage detector remains operational.

What happens if the EN/ENB pin is left open?

For the XC6122 series, the EN/ENB pin is internally pulled up to the VIN pin, allowing the device to operate with the pin left open when using the watchdog function.