Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Watchdog Circuit
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	400 ms Typical
Voltage - Threshold:	1.6V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-25

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Introduction

The XC6121A516MR-G is an ultra-low power supervisor with a wide range of applications. It is a programmable 3-pin reset circuit, which is designed for the protection of the system. This low power supervisor is based on R-type MOS protection to achieve high reliability. The XC6121A516MR-G has a wide range of power supply voltage range, providing 3.3V, 3.45V, 5.0V, and so on.

Application Field

The XC6121A516MR-G is mainly used in personal computers and other industrial control systems, as well as in communication, instrumentation and medical equipment. It provides an efficient reset solution for these devices.In PCs, the XC6121A516MR-G provides efficient protection against power failures, short circuits and POR (Power On Reset). It prevents uncontrolled startup and shutdown of the system, ensuring a safe and reliable operation. In industrial control systems, the XC6121A516MR-G is used to monitor the power supply and reset the system when a power failure occurs. It also monitors the voltage level of the system and triggers an output signal to indicate when the system is out of range. In communications, instrumentation and medical equipment, the XC6121A516MR-G is used to detect voltage drops and output a signal to alert users when necessary. This prevents system shutdown and provides the device with a reliable power supply.

Working Principle

The XC6121A516MR-G uses an R-type mosfet switch circuit to provide systematic reset control. The circuit includes an on-delay generator, an open-drain switch, a voltage detector and a reset output. When power is applied to the circuit, the on-delay generator will output a pulse after a preset amount of time, which turns on the open-drain switch and passes current through the voltage detector. If the voltage detected is below the reset threshold, the reset signal will be sent out and the circuit will be reset.When the reset signal is not received, the circuitry will stay in low power mode. The XC6121A516MR-G also has an optional power-on monitor output signal that can be used to detect power-on, off, and out of range events.

Conclusion

The XC6121A516MR-G is an ultra-low power supervisor with a wide range of applications. It is mainly used in PCs, industrial control systems, communications, instrumentation, and medical equipment. The XC6121A516MR-G uses an R-type mosfet switch circuit to provide systematic reset control, and it also has an optional power-on monitor output signal. This supervisor provides an efficient and reliable solution for protecting systems against power failure and other risks.

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