XC6121E531ER-G

Supervisors Overview

The XC6121E531ER-G is a high-precision voltage detector with watchdog function and ON/OFF control from the XC6121 series. It incorporates CMOS process technology, consisting of a reference voltage source, delay circuit, comparator, and output driver. The device features a fixed detection threshold voltage of 3.1V and an active low reset output. It operates within a supply voltage range of 1.0V to 6.0V and supports a watchdog timeout period of 400ms typical. The component is housed in a compact 6-USP (1.8x2mm) package and functions reliably across an operating 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 allowing external control to disable the watchdog while maintaining voltage detection
• Utilizes laser trimming technology to ensure high precision in fixed detection threshold voltages
• Provides built-in release delay circuits to prevent false triggering without requiring external components

Supervisors Applications

• Microprocessor reset circuits
• Memory battery backup systems
• General system supervision

Supervisors Procurement Notes

Verify the specific suffix ER-G confirms compliance with RoHS and Antimony/Halogen-free standards as per Torex specifications. Confirm the package designation matches the required 6-USP footprint for PCB layout compatibility. Ensure the order quantity aligns with standard tape and reel packaging requirements defined by the manufacturer.

Supervisors Selection Notes

Select this part when a fixed 3.1V threshold is required alongside integrated watchdog functionality. The XC6121 series offers low current consumption suitable for battery-operated devices. Consider the EN/ENB pin utility if dynamic control over the watchdog state is necessary during operation. Verify that the 400ms timeout meets the application's fault recovery timing constraints.

Supervisors Part Context

This component belongs to the XC6121/XC6122/XC6123/XC6124 series of voltage detectors manufactured by Torex Semiconductor Ltd. The series is characterized by high precision and low power consumption, utilizing CMOS technology. These devices are designed to monitor supply voltages and provide reset signals or watchdog triggers for digital systems.

Supervisors Replacement Considerations

XC6121A531ER-G

Supervisors FAQ

How is the watchdog function controlled?

The watchdog function can be turned ON or OFF via the EN/ENB pin. Setting this pin to a specific logic level disables the watchdog timer while allowing the voltage detector to continue operating.

What is the output type of the reset signal?

The reset output is active low, typically implemented as an open drain or open collector configuration.