MAX6418UK45+T

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Supervisors are an essential component of any Power Management Integrated Circuit (PMIC). Supervisors protect the device by monitoring critical power supply and reset conditions, and can also perform a variety of system tasks. The MAX6418UK45+T is an advanced supervisor IC designed to provide a complete suite of power management, reset, regulation, and timing functions.

The MAX6418UK45+T supervisor is designed to provide integrated power management, reset and regulation, and logic supervisory functions. Its feature set includes a wide input voltage range (3.3V to 28V), an internal power-on-reset (POR) circuit, an adjustable reset time delay (1ms to 2s), a watchdog timer with an adjustable timeout period (1.6ms to 8s), and two system reset outputs. It also includes two input power supply pins, VIN and VDD, for the input supply voltage and the watchdog POR voltage (Vbat). The MAX6418UK45+T is available in 16-pin TSSOP, SOIC, and MSOP packages.

The MAX6418UK45+T supervisor has various applications in industrial, consumer, automotive, and medical equipment. It can be used to monitor power supplies, detect voltage drop or overvoltage, and reset the system to a known state in the event of a malfunction. It can also be used as a watchdog timer to detect system lock-up or “hang-up” conditions, and reset the system in those cases. The MAX6418UK45+T is also suitable for providing overvoltage and reverse polarity protection in applications such as power supplies and solid-state drives.

The MAX6418UK45+T supervisor employs a multi-level voltage detection architecture to detect voltage drop and overvoltage conditions. The main input voltage is monitored by two fixed-threshold comparators, one for overvoltage detection and one for undervoltage detection. The thresholds can be adjusted using two external resistors. When the VDD voltage drops below the undervoltage or rises above the overvoltage thresholds, the reset signal is sent to the system.

In addition to the voltage detection, the MAX6418UK45+T includes a watchdog timer to detect system lock-ups or hung conditions. The watchdog timer is programmed using two external resistors, and when enabled, it monitors the POR input for a signal from the system. If no signal is received after a certain period of time, the watchdog timer will trigger the system reset.

The MAX6418UK45+T supervisor is a highly integrated PMIC that provides robust power management, reset, and supervisory functions. It is well-suited for industrial, consumer, automotive, and medical equipment applications, allowing designers to reduce system design time and cost, while providing high reliability and stability. The wide input voltage range and adjustable reset time delay of the MAX6418UK45+T make it an ideal choice for a variety of applications.

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