XC6122D450MR-G

Supervisors Overview

The XC6122D450MR-G is a high-precision voltage detector with a watchdog timer manufactured by Torex Semiconductor. It operates within a supply voltage range of 1.0 V to 6.0 V and features a fixed detection threshold of 4.5 V. The device utilizes CMOS technology, drawing a typical operating current of 12 µA and a standby current of 5 µA. It provides an open-drain output that goes low upon power failure detection. The unit includes a built-in delay circuit for release delays and supports watchdog functions controlled via the EN/ENB pin. It is housed in a compact SOT-25-5 package.

Supervisors Feature Summary

• Integrates a watchdog timer function with selectable timeout periods for system reliability monitoring
• Features a dedicated control pin (EN/ENB) to independently disable the watchdog while maintaining voltage detection
• Provides an open-drain output signal that activates during power failure events
• Utilizes laser-trimmed internal reference voltages to ensure high precision without external components

Supervisors Applications

• Microprocessor reset circuits requiring precise voltage supervision
• Watchdog timer implementations for embedded system stability
• Memory battery backup switching applications
• Power failure detection in portable electronic devices

Supervisors Procurement Notes

Verify the specific suffix codes against official datasheets to confirm the exact threshold voltage and package variant. Ensure compatibility with the target PCB footprint, typically SOT-25-5. Confirm RoHS compliance status through manufacturer documentation before integration into regulated products.

Supervisors Selection Notes

Select this component when a fixed 4.5 V threshold is required for single-input voltage monitoring. Consider the low quiescent current for battery-operated designs. Verify that the open-drain output configuration aligns with the downstream logic interface requirements.

Supervisors Part Context

This part belongs to the XC6121/XC6122/XC6123/XC6124 series from Torex Semiconductor. These are high-precision voltage detectors incorporating watchdog functions. The series is designed for applications requiring reliable power management with minimal external component count.

Supervisors Replacement Considerations

Cross-reference with other XC6122 variants sharing the same package but different threshold voltages if the 4.5 V setting is flexible. Verify functional equivalence with other single-channel supervisors offering similar watchdog capabilities.