MAX6392KA23+

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MAX6392KA23+ is an advanced supervisor designed to provide system reset and power-on control for microprocessor- and DSP-based systems. It combines full feature supervisory functions with a 17ms power-on reset delay, making it the ideal reset solution for high-performance systems. It also includes an active low open-drain reset output and the ability to reset both active-low and active-high systems.

As a PMIC (power management IC) - Supervisors, the MAX6392KA23+ is used to improve the reliability and performanc of system reset by accurately monitoring Vcc power conditions on systems. It ensures that the system will reset properly in all conditions, including brown-out or under voltage events. It also reduces system complexity by combining multiple functions into a single integrated circuit, eliminating the need for additional discrete components.

The working principle of the MAX6392KA23+ is based on a comparison of the system\'s supply voltage, Vcc, to two programmable threshold voltages, Vth1 and Vth2. It monitors Vcc for under voltage or brownout conditions, and when either of these occurs, it asserts a reset signal. The reset signal is a logic output that will remain active until the Vcc supply voltage exceeds the Vth2 voltage level by a certain amount.

The Vth1 and Vth2 voltages can be programmed via two pins, VSEL1 and VSEL2. VSEL1 sets the level where the reset is asserted, while VSEL2 sets the level where the reset is de-asserted. The MAX6392KA23+ also includes a slow start feature that limits the rate at which the output voltage rises, ensuring that the system will not experience an over voltage condition at power up.

The MAX6392KA23+ also includes an active low open-drain reset output. This output is used to provide an active low reset pulse to external circuitry, providing an extra level of system robustness. The open-drain output can also be used to reset both active-low and active-high systems, making it ideal for mixed-voltage system applications.

In addition to its reset and power-on control features, the MAX6392KA23+ also includes a watchdog timer to monitor system operation for unexpected system lockups. The watchdog timer can be programmed to reset the system if left in an unresponsive state for an extended period of time. This feature helps to ensure system reliability, even in fault scenarios where the hardware may become locked up.

The MAX6392KA23+ is suitable for use in a wide range of applications, including microprocessor-based systems, network appliances, power over Ethernet (PoE) systems, and other products that require accurate power-on reset control. It is available in a thermal package and is rated for operation over a temperature range of -40°C to +85°C.

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