XC6121A730MR-G

Supervisors Overview

The XC6121A730MR-G is a high-precision voltage detector manufactured by Torex Semiconductor, designed for monitoring power supply integrity in electronic systems. It operates within an input voltage range of 1 V to 6 V and features a fixed detection threshold of 3.0 V with 2% accuracy. The device incorporates a built-in watchdog timer and offers an N-channel open-drain output configuration. It consumes a typical quiescent current of 5 uA and includes a reset delay time of 200 ms. The component is housed in a compact SOT-25-5 package and supports operation across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates a watchdog timer function that outputs a reset signal if the watchdog input remains inactive within the specified timeout period.
• Features an EN/ENB control pin that allows independent switching of the watchdog function while maintaining continuous voltage detection.
• Utilizes laser trimming technology to ensure precise internal fixed detection voltages without requiring external components.

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 'A' against the manufacturer's official datasheet to confirm the exact detection voltage code and tolerance specifications. Ensure the ordering part number matches the required package type and environmental compliance standards before procurement.

Supervisors Selection Notes

Select this component when a low-power supervisory circuit with integrated watchdog functionality is required. The open-drain output is suitable for interfacing with various logic families, provided pull-up resistors are appropriately configured for the target system voltage levels.

Supervisors Part Context

This part belongs to the XC6121 series, which comprises high-precision, low-current voltage detectors with watchdog functions. The series utilizes CMOS process technology to achieve high accuracy and low power consumption, making it suitable for portable and battery-operated applications.

Supervisors Replacement Considerations

Compatible replacements include other parts from the XC6121 series with matching threshold voltages and package types, such as XC6121A731MR-G or XC6121A729MR-G, subject to verification of electrical parameters.

Supervisors FAQ

How is the watchdog function controlled?

The watchdog function can be turned on or off via the EN/ENB pin. Setting this pin to a specific logic level disables the watchdog while keeping the voltage detector operational.

What is the output state when a voltage fault is detected?

The output goes low (active low) when the input voltage drops below the detection threshold or when a watchdog timeout occurs.