XC6121D322MR-G

Supervisors Overview

The XC6121D322MR-G is a fixed voltage detector manufactured by Torex Semiconductor. It operates within an input voltage range of 1 V to 6 V and features a fixed detection threshold of 2.2 V. The device utilizes CMOS technology and provides an open-drain output configuration. It includes a built-in delay circuit for release timing and supports watchdog functionality via the EN/ENB pin. The component is housed in a 5-pin SOT-25 package and functions reliably across a temperature range of -40 °C to +85 °C.

Supervisors Feature Summary

• Integrates a high-precision reference voltage source with a comparator and output driver for accurate voltage monitoring.
• Features a built-in delay circuit that eliminates the need for external components to generate release delay signals.
• Allows independent control of the watchdog function via the EN/ENB pin while maintaining continuous voltage detection operation.

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 'D' indicates the correct output type and internal pull-up/down configuration for the EN/ENB pin. Confirm the '322' code corresponds to the required 2.2 V detection threshold. Ensure the SOT-25 package dimensions match the target PCB layout. Check RoHS compliance status against current regulatory requirements before finalizing procurement.

Supervisors Selection Notes

Select this component when a fixed 2.2 V threshold is required for system supervision. Consider the low current consumption characteristics suitable for battery-operated devices. Verify that the open-drain output interface is compatible with the downstream logic levels. Ensure the operating voltage range covers the minimum and maximum supply voltages of the monitored circuit.

Supervisors Part Context

This part belongs to the XC6121 series, which groups high-precision, low-current voltage detectors with watchdog functions. The series employs laser trimming technology to set detect voltages in increments from 1.6 V to 5.0 V. The XC6121 variant specifically allows the EN/ENB pin to be left open or controlled externally to manage the watchdog state without affecting the voltage detector.

Supervisors Replacement Considerations

Other XC6121 variants with different detection thresholds (e.g., XC6121D332MR-G) may serve as substitutes if the voltage level differs. Cross-reference XC6122 series parts for similar functionality but verify pin compatibility regarding the EN/ENB internal pull configurations.