XC6121E737ER-G

Supervisors Overview

The XC6121E737ER-G is a high-precision voltage detector with watchdog function and ON/OFF control, manufactured by Torex Semiconductor Ltd using CMOS process technology. It operates within a supply voltage range of 1.6V to 5.0V and features an internally fixed detect threshold voltage of 3.7V. The device incorporates a built-in delay circuit for release delay time settings ranging from 3.13ms to 400ms and offers six watchdog timeout period options between 50ms and 1.6s. It utilizes laser trimming technology for accuracy and provides an N-channel open-drain output configuration.

Supervisors Feature Summary

• Integrates a watchdog timer function with selectable timeout periods for system monitoring
• Features an EN/ENB pin allowing independent control over the watchdog function while maintaining voltage detection
• Utilizes laser trimming technology to ensure high precision in detect voltage thresholds
• Includes a built-in delay circuit that eliminates the need for external components for release delay

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 ER-G corresponds to the USP-6 package and tape-and-reel packaging format when sourcing. Confirm RoHS compliance status as indicated in official datasheets. Ensure the detected threshold voltage matches the required 3.7V specification for the target application design.

Supervisors Selection Notes

Select this component when a fixed 3.7V threshold is required alongside integrated watchdog functionality. Consider the EN/ENB pin utility if dynamic control of the watchdog timer is necessary without disabling the voltage supervisor. Verify that the operating temperature range of -40°C to 85°C meets environmental requirements.

Supervisors Part Context

This part belongs to the XC6121/XC6122/XC6123/XC6124 series of voltage detectors. The XC6121 variant specifically denotes an N-channel open-drain output configuration. The series is designed for low current consumption applications requiring high precision and compact packaging solutions like the USP-6.

Supervisors Replacement Considerations

Cross-reference with other XC6121 series variants such as XC6121A737ER-G or XC6121C737ER-G if different output configurations or package types are acceptable. Ensure any substitute maintains the same 3.7V threshold and watchdog capabilities.