XC6121A737ER-G

Supervisors Overview

The XC6121A737ER-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 a fixed detection threshold of 3.7V. The device includes an internal delay circuit for release delay time output without external components. It utilizes laser trimming technology for accurate voltage detection in increments of 100mV across the 1.6V to 5.0V range. The IC offers six selectable watchdog timeout periods ranging from 50ms to 1.6s and five release delay time settings from 3.13ms to 400ms. It is housed in a compact USP-6 package.

Supervisors Feature Summary

• Integrates a watchdog timer function with multiple timeout period selections for system monitoring
• Features an EN/ENB pin to selectively enable or disable the watchdog function while maintaining voltage detection
• Incorporates a built-in delay circuit to generate release delay signals without requiring external components
• Utilizes laser trimming technology to ensure high-precision fixed detection thresholds

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 manufacturer's official datasheet to confirm the package type and environmental compliance status. Ensure the detection threshold code matches the required 3.7V specification for the target application. Cross-reference the part number with the latest Terox Semiconductor documentation to confirm availability and any potential obsolescence notices before finalizing procurement plans.

Supervisors Selection Notes

Select this component when a fixed 3.7V detection threshold is required alongside integrated watchdog functionality. The choice depends on the need for precise voltage monitoring with minimal external component count due to the internal delay circuit. Consider the operating temperature range and the specific watchdog timeout requirements suitable for the microprocessor or memory system being protected.

Supervisors Part Context

This part belongs to the XC6121 series of voltage detectors designed for low current consumption applications. The series combines voltage supervision with watchdog capabilities in a single CMOS IC. It is intended for portable devices and systems requiring reliable power management and reset generation. The USP-6 package allows for space-constrained designs while maintaining robust performance characteristics.

Supervisors Replacement Considerations

XC6121A344ER-G is listed as a parameter equivalent substitute.