XC6122D549MR-G

Supervisors Overview

The XC6122D549MR-G is a high-precision voltage detector with an integrated watchdog timer manufactured by Torex Semiconductor. It operates within a supply voltage range of 1.0V to 6.0V and features a fixed detection threshold of 4.9V, selected via laser trimming from a 1.6V to 5.0V range in 0.1V increments. The device utilizes CMOS technology, drawing only 5μA of static current and 12μA during operation. It provides six selectable watchdog timeout periods ranging from 50ms to 1.6s and five release delay time options between 3.13ms and 400ms. The output is an N-channel open-drain type that goes low upon detection. Hysteresis width is typically 5% of the detection voltage, with a temperature coefficient of +100ppm/°C.

Supervisors Feature Summary

• Integrates a high-precision voltage detector with a built-in watchdog timer function for system monitoring.
• Features an EN/ENB pin that allows independent control over the watchdog function while maintaining voltage detection.
• Utilizes laser trimming technology to ensure accurate internal detection voltage settings without external components.
• Employs an N-channel open-drain output configuration requiring no external pull-up resistors for basic 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 'MR-G' corresponds to the SOT-25 (SC-74A) package and tape & reel packaging format as documented in official Torex datasheets. Confirm the 'D' series designation aligns with the 4.9V detection threshold and standard watchdog timing options. Ensure compliance with RoHS directives and check for any regional distribution restrictions or lead time variations associated with this specific part number before finalizing procurement orders.

Supervisors Selection Notes

Select the XC6122D549MR-G when a precise 4.9V monitoring threshold is required for systems operating between 1.0V and 6.0V. This component is suitable for applications needing low quiescent current consumption and integrated watchdog functionality without external timing capacitors. Consider the SOT-25 package for space-constrained designs and verify that the available watchdog timeout ranges meet the specific microprocessor reset requirements of the target application.

Supervisors Part Context

The XC6122D549MR-G belongs to the XC6121/XC6122/XC6123/XC6124 series of voltage detectors produced by Torex Semiconductor. These devices are designed using advanced CMOS process technology to achieve high precision and low power consumption. The series distinguishes itself by incorporating watchdog timers directly into the voltage monitor architecture, eliminating the need for separate supervisory ICs. This integration simplifies circuit design for embedded systems requiring robust power management and processor reset capabilities.

Supervisors Replacement Considerations

Cross-reference other XC6122 series variants with different detection thresholds if the 4.9V setting does not match the new system requirement. Verify package compatibility when substituting with other SOT-25 monitored parts. Ensure that any replacement maintains the same open-drain output polarity and watchdog input logic levels to preserve existing circuit functionality.