XC6122D549ER-G

Supervisors Overview

The XC6122D549ER-G is a high-precision voltage detector with a watchdog function manufactured by Torex Semiconductor. It features an internally fixed detect voltage of 4.9V and operates within a supply voltage range of 1.0V to 6.0V. The device utilizes laser trimming technology for accuracy and includes a built-in delay circuit that eliminates the need for external components for release delay time settings. It offers six selectable watchdog timeout periods ranging from 50ms to 1.6s and five release delay time options between 3.13ms and 400ms. The output configuration is N-channel open drain, providing an active low signal upon detection. The component supports an operating temperature range of -40°C to +85°C and is housed in a compact 6-UFDFN Exposed Pad package.

Supervisors Feature Summary

• Integrated watchdog timer with selectable timeout periods and release delay times
• High-precision voltage detection using laser trimming technology
• Built-in delay circuit requiring no external components for timing functions
• EN/ENB pin allows independent control of the watchdog function while maintaining 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 ER-G against the official Torex datasheet to confirm the package type and electrical characteristics match the design requirements. Ensure the detect voltage of 4.9V aligns with the target system threshold. Confirm RoHS compliance status through authorized distributors or direct manufacturer channels before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a precise 4.9V threshold is required for supervisory applications. Consider the N-channel open drain output compatibility with the host microcontroller logic levels. Evaluate the available watchdog timeout options to ensure they meet the system's fault recovery timing constraints. Verify that the 6-UFDFN package dimensions fit the PCB layout constraints.

Supervisors Part Context

This part belongs to the XC6121/XC6122/XC6123/XC6124 series of voltage detectors. These devices are designed for low current consumption and high precision using CMOS process technology. The series provides flexible configuration options for various power management needs, including battery backup and system reset functionalities across industrial and commercial temperature ranges.

Supervisors Replacement Considerations

Cross-reference other XC6122 variants with different detect voltages if the 4.9V threshold does not match the application. Check XC6121 or XC6123 series members for alternative package options like SOT-25 if space constraints differ. Ensure any substitute maintains the same watchdog functionality and output configuration.