XD6131B411MR-Q

Supervisors Overview

The XD6131B411MR-Q is a voltage detector with an externally adjustable watchdog timeout period, manufactured by Torex Semiconductor. It operates within a supply voltage range of 1.5 V to 6 V and features a threshold voltage of 4.1 V. The device provides an open-drain output and includes a backup function for battery monitoring. It offers a reset delay time of 100 ms and maintains high accuracy across an operating temperature range from -40°C to +125°C. Packaged in a compact SOT-26-6 format, it is AEC-Q100 Grade 1 qualified for automotive applications.

Supervisors Feature Summary

• Externally adjustable watchdog timeout period allows flexible system protection timing configuration.
• Integrated backup function enables continuous monitoring during battery swap or power interruption scenarios.
• AEC-Q100 Grade 1 qualification ensures reliability and compliance for automotive electronic environments.

Supervisors Applications

• Automotive engine control unit supervision
• Battery management systems requiring seamless backup switching
• Industrial equipment watchdog timer implementation

Supervisors Procurement Notes

Verify the specific suffix MR-Q confirms AEC-Q100 Grade 1 automotive qualification when sourcing. Ensure the external components used for setting the watchdog timeout match the required timing specifications. Confirm RoHS compliance status aligns with regional regulatory requirements before final procurement approval.

Supervisors Selection Notes

Select this component when a 4.1 V detection threshold is required alongside customizable watchdog functionality. The open-drain output necessitates an external pull-up resistor for proper logic level interfacing. Consider the SOT-26-6 package size constraints against available PCB real estate during layout planning.

Supervisors Part Context

This part belongs to the XD6131 series of supervisory circuits designed for precise voltage monitoring. The series differentiates itself through adjustable watchdog timers and dedicated backup capabilities, catering to safety-critical applications where standard fixed-timer detectors are insufficient.

Supervisors Replacement Considerations

XD6131B251MR-Q (2.5V threshold)

Supervisors FAQ

How is the watchdog timeout period determined?

The timeout period is not fixed internally but is determined by the external capacitor connected to the designated pin, allowing for customized timing adjustments.

What is the purpose of the backup function?

The backup function allows the device to monitor a secondary voltage source, ensuring continuous system supervision during transitions between primary and backup power supplies.