XC6121D550MR-G

Supervisors Overview

The XC6121D550MR-G is a high-precision voltage monitor manufactured by Torex Semiconductor Ltd, designed for supervising power supply voltages in electronic systems. It operates within an input voltage range of 1 V to 6 V and features a fixed detection threshold of 5.0 V. The device incorporates a watchdog timer function with selectable timeout periods ranging from 50 ms to 1.6 s, ensuring system reliability against software faults. It utilizes CMOS process technology to achieve low current consumption, with a typical operating current of 12 uA and standby current of 5 uA. The output driver is configured as an open-drain N-channel structure, compatible with various logic families. The component is housed in a compact SOT-25-5 surface-mount package, suitable for space-constrained applications.

Supervisors Feature Summary

• Integrated watchdog timer function with multiple selectable timeout periods for system fault monitoring
• High-precision voltage detection using laser-trimmed internal reference with fixed threshold options
• Low current consumption design utilizing advanced CMOS process technology
• Open-drain output configuration allowing flexible interfacing with microprocessor reset lines

Supervisors Applications

• Microprocessor watchdog monitoring and reset circuits
• Memory battery backup circuits
• System power-on reset circuits
• Power failure detection circuits

Supervisors Procurement Notes

Verify the specific suffix codes against the official Torex Semiconductor datasheet to confirm the exact detection voltage, release delay time, and watchdog timeout period. Ensure the ordering quantity aligns with manufacturer packaging standards, typically provided in reels of 3000 units. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer prior to procurement.

Supervisors Selection Notes

Select this component when a fixed 5.0 V detection threshold is required for systems operating between 1 V and 6 V. Consider the integrated watchdog feature if software lockup protection is necessary. Evaluate the low quiescent current requirements for battery-powered applications. Verify that the open-drain output interface matches the target microcontroller's reset input specifications.

Supervisors Part Context

This part belongs to the XC6121 series of voltage detectors with watchdog functions. The series offers high accuracy and low power consumption, making it suitable for portable electronics and industrial control systems. The XC6121 variant specifically provides a single-channel voltage monitoring capability with built-in delay circuits, eliminating the need for external components for standard reset timing operations.

Supervisors Replacement Considerations

Cross-reference with other XC6121 series variants such as XC6121D549MR-G or XC6121D551MR-G for slightly different threshold voltages. Check XC6122, XC6123, and XC6124 series for similar packages with different watchdog configurations or pull-up/pull-down characteristics on the enable pin.