XC6122F618ER-G

Supervisors Overview

The XC6122F618ER-G is a high-precision voltage detector with a watchdog function 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 1.8 V. The device utilizes CMOS process technology, drawing a typical operating current of 12 µA and a static current of 5 µA. It provides an N-channel open-drain output that goes low upon detection. The unit includes a built-in delay circuit for release signals and supports watchdog timeout periods ranging from 50 ms to 1.6 s. It functions reliably across a temperature range of -40 °C to +85 °C.

Supervisors Feature Summary

• Integrates a watchdog timer with selectable timeout periods for system monitoring
• Features a built-in delay circuit eliminating the need for external components
• Includes an EN/ENB pin to independently control the watchdog function state

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 ER-G corresponds to the USP-6C package and tape-and-reel configuration. Confirm the detection voltage code matches the required 1.8 V threshold. Ensure compatibility with the target PCB footprint and reflow soldering profile. Check RoHS compliance status against current regulatory requirements. Validate lead times and availability through authorized distribution channels.

Supervisors Selection Notes

Select this component when a fixed 1.8 V threshold is required for single-input voltage monitoring. Choose the USP-6C package for compact surface-mount applications. Consider the low quiescent current for battery-powered designs. Verify that the open-drain output interface aligns with the downstream logic levels. Ensure the watchdog timeout settings meet the microprocessor's timing constraints.

Supervisors Part Context

This part belongs to the XC6121/XC6122/XC6123/XC6124 series of voltage detectors. The series employs laser trimming technology to fix detection voltages in 0.1 V increments between 1.6 V and 5.0 V. The XC6122 variant specifically integrates an internal pull-up or pull-down on the enable pin, allowing the watchdog function to operate without explicit pin connection if desired.

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 high or low level disables the watchdog while keeping the voltage detector operational.

What is the output behavior during detection?

The output type is V_DFL low when a voltage drop below the detection threshold is detected. The output configuration is an N-channel open drain.