XC6124A519ER-G

Supervisors Overview

The XC6124A519ER-G is a high-precision voltage detector with a watchdog function manufactured by Torex Semiconductor. It operates within an input voltage range of 1.0 V to 6.0 V and features a fixed detection threshold of 1.9 V. The device utilizes CMOS technology for low current consumption, with a typical operating current of 12 µA and static current of 5 µA. It provides an N-channel open-drain output that goes low upon detection. Key specifications include a reset delay time of 50 ms and a watchdog timeout period of 50 ms. The component is housed in a 6-USPC (1.8x2) surface-mount package and supports an operating temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a watchdog timer function with the voltage detector to monitor system activity and trigger resets on timeout.
• Features an enable pin (EN/ENB) that allows independent control over the watchdog function while keeping the voltage detector active.
• Utilizes laser trimming technology to ensure high precision in the internally fixed detect voltage settings.
• Provides built-in release delay circuits to prevent false triggering 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 ER-G corresponds to the 6-USPC tape and reel packaging configuration. Confirm the detection voltage code '519' aligns with the required 1.9V threshold for the target application design. Ensure compatibility with the specified operating temperature range and supply voltage limits during integration.

Supervisors Selection Notes

Select this component when a combined voltage supervision and watchdog timer solution is required in a compact surface-mount footprint. The internal pull-up/pull-down capabilities of the EN/ENB pin simplify circuit design by allowing the pin to remain open if the watchdog function is always enabled. Verify that the 1.9V threshold matches the monitored rail requirements.

Supervisors Part Context

This part belongs to the XC6124 series, which groups high-precision, low-current voltage detectors with watchdog functions. The series shares common architectural features such as CMOS process technology, reference voltage sources, and comparators. Variations within the series are primarily defined by the detection voltage codes and package types, offering flexibility for different monitoring thresholds and board space constraints.

Supervisors Replacement Considerations

XC6124A519MR-G

Supervisors FAQ

How is the watchdog function controlled?

The watchdog function can be turned ON or OFF via the EN/ENB pin. For the XC6124 series, this pin is internally pulled up to the VIN pin, allowing the watchdog to operate by default when the pin is left open.

What happens if the watchdog input signal is not refreshed?

If the watchdog input maintains a constant level ('H' or 'L') beyond the specified watchdog timeout period (50 ms), the IC outputs a reset signal.