MAX6363PUT29-T

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MAX6363PUT29-T is one of the integrated circuits (ICs) under the Power Management Integrated Circuit (PMIC) category of devices, more specifically, the Supervisors domain. This IC device is recommended for system surveillance and reset operations, ideal for applications that require precise reset levels in both the microprocessor and logic circuits. Additionally, it is integrated with a chip select (CS) pin that can control a variety of reset operations, such as system warm-up, a CPU standby mode and a power fault active reset.

Application

The MAX6363PUT29-T is a popular choice for system monitoring, reset, and clock applications; such as powering down and turning on industrial machines and appliances. It is most notably used in music players, home theatre systems and media servers. As its design follows the miniaturisation trend, it makes it more favoured to be used in applications that require a system on chip (SoC) as part of its components. Its functions are also suitable for monitoring microcontrollers and analytical equipment such as analysers and recorders, making it one of the most versatile PMIC devices. As this device is designed to reset automatically on an event that surpasses its threshold, it makes it the ideal choice for monitoring the temperature or voltage of circulating or idling systems.

Working Principle

The MAX6363PUT29-T is available in two versions: an active-high reset (RST#) and an active-low reset (RST#bar). It follows an open-drain output capability where the RST# output is expected to be wired to an external pull-up resistor. This allows the user to customise the board with its own timedoutput. This would be helpful when requested by a processor or SoC type. Other than its RST# reset output, the device also comes equipped with an active-low CS# output pin. The CS# pin can be used to keep the system in a low power state; this includes preventing certain areas of circuits to enter in the active state until it is released. It also gives the user a choice to enable or disable the reset circuit whenever is necessary. As the chip select is active low, it can be used with a pull-up resistor if needed.

The MAX6363PUT29-T also supports a bias pin - BIAS - where the voltage level is selected to terminate the watchdog timer. This allows the device to regularly reset the circuit during the event of die temperature exceeding the expected temperature. This terminal can support up to 3V and the maximum duration for this particular reset will be up to 1ms. The device also comes with an internal voltage-controlled oscillator (VCO) function. This feature can help in eliminating the need for external clock input and reduces the cost of the system.

Conclusion

The MAX6363PUT29-T is an admirable choice for unique PMIC applications, such as temperature or voltage monitoring system. Its miniaturised design adds value to applications that requires SoC integration and its open-drain output allows the device to be customised by users. Its other features such as the reset functions, bias pin and VCO functions also make it one of the most versatile ICs in the Supervisors domain.

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