XC6122A749ER-G

Supervisors Overview

The XC6122A749ER-G is a high-precision voltage detector with a watchdog timer and ON/OFF control, manufactured by Torex Semiconductor using CMOS technology. It operates within a supply voltage range of 1.0V to 6.0V and features an N-channel open-drain output. The device incorporates a built-in delay circuit for release delay times ranging from 3.13ms to 400ms and offers six selectable watchdog timeout periods between 50ms and 1.6s. Detect voltages are fixed internally via laser trimming in 0.1V increments from 1.6V to 5.0V. The EN/ENB pin allows independent control of the watchdog function while maintaining voltage detection. It is housed in a compact 6-UFDFN (USP-6C) package.

Supervisors Feature Summary

• Integrated watchdog timer with selectable timeout periods and built-in release delay circuit
• High-precision voltage detection with laser-trimmed thresholds and low temperature drift
• Independent ON/OFF control of watchdog function via EN/ENB pin without affecting voltage monitoring
• Low current consumption suitable for battery-powered applications

Supervisors Applications

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

Supervisors Procurement Notes

Verify the specific detect voltage code suffix against official Torex documentation to ensure accuracy, as the XC6122 series utilizes laser trimming for precise threshold settings. Confirm the package marking and reel specifications match the required manufacturing standards. Cross-reference the EN/ENB pin configuration requirements with the target system design to ensure proper pull-up or pull-down implementation if left open.

Supervisors Selection Notes

Select this component when a combined voltage supervisor and watchdog timer is required in a minimal footprint. The internal pull-up/pull-down on the EN/ENB pin simplifies interface design compared to other series variants. Ensure the required detect voltage falls within the 1.6V to 5.0V range available in 0.1V steps. Consider the specific watchdog timeout and release delay requirements to choose the correct variant within the XC6122 family.

Supervisors Part Context

This part belongs to the XC6121/XC6122/XC6123/XC6124 series of voltage detectors with watchdog functions. The XC6122 variant specifically features an internally pulled-up EN/ENB pin, allowing the watchdog function to be disabled while leaving the pin unconnected. This distinguishes it from the XC6121 and XC6123 series which have different internal biasing for the enable pin.

Supervisors Replacement Considerations

XC6122A749MR-G: Alternative package option (SOT-25-5). XC6122A749DR-G: Alternative package option (SOT-89-5). Verify detect voltage and package compatibility before substitution.