MIC2782DRYCS-TR Integrated Circuits (ICs)

The MIC2782DRYCS-TR is a 4-pin supervisor device that ensures reliable system reset. The watchdog timer delay and reset timeout are both 100 ms. It monitors VDD and provides an active-low reset signal during a power-on reset. The MIC2782DRYCS-TR is essential in applications where consistent system reset is needed for reliable operation, such as in battery-powered systems.

The MIC2782DRYCS-TR is a versatile reset supervisor that also features 2.5 V to 5.5 V supply voltage, a low power-on reset timeout in the form of a 100-ms delay, and a Watchdog timer. This supervisor can have the rising or falling voltage threshold of the Watchdog timer configured for a reset timeout of 100 ms, supplying a low active reset once the threshold is reached. It also features an active-low reset output that is capable of driving 5 mA.

Application Field

Because of its versatile functionality, the MIC2782DRYCS-TR is used in many applications. The most probable applications include monitoring battery levels in some online backup systems, providing on-time active reset in industrial processes such as robotic arm movements, monitoring system temperature levels and providing reset in air conditioning systems, etc.

Working Principle

The working principle of the MIC2782DRYCS-TR is dependent on its reset output and watchdog timer thresholds. When the supply voltage at VDD exceeds 1.9 V (nominal 2.5 V - 5.5 V) the reset output is released and the active-low reset pin is deasserted. The internal Watchdog timer will monitor the reset timeout, and if this time is reached, the reset output is asserted again and reset is asserted Low. The reset timeout is configurable from 4 ms - 100 ms, and its threshold can be configured to be rising or falling.

The MIC2782DRYCS-TR also features built-in system-level protection such as over-voltage, reverse battery, and reverse supply current protection. It also has two separate Brown-out Detect (BO) pins which will prevent data unsynchronisation, while also keeping the system secure.

Conclusion

The MIC2782DRYCS-TR is a powerful reset supervisor that can provide reliable reset and reset timeout of up to 100 ms. It is useful in many applications, such as monitoring battery levels and providing system reset in industrial processes and air conditioning systems. Its two key features are the reset output and watchdog timer thresholds, that provide reliable reset and data integrity. The built-in protection systems also make this supervisor a great choice for many kinds of system reset for reliable operation.