MAX6424UK44+T

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PMIC (Power Management IC) - Supervisors are semiconductor ICs designed to monitor power supply voltage, current and temperature that provide protection for a wide range of electrical systems.

The MAX6424UK44+T is an advanced supervisor IC from Maxim Integrated, capable of providing an array of features and functions for a wide range of applications. The MAX6424UK44+T combines battery stack control and monitoring, buck, boost and linear voltage regulation, system restart management, microprocessor and memory reset, automatic power-on reset (POR) signaling and rail-to-rail output into a single chip.

The MAX6424UK44+T provides extremely low power consumption during standby, maximum flexibility for customization, small package size and minimal board space requirements. By incorporating generation and monitoring of high-voltage signals for power gating, it also allows for reduced EMI by providing soft start and further reducing system-level reset times.

The MAX6424UK44+T application field covers battery-operated systems and handheld or embedded devices. It is especially suitable for low-voltage and low-power applications where extended battery life and improved system reliability are required. Some typical applications for this supervisor IC include cell phones, media players, PDAs, set top boxes, gaming consoles, digital cameras, portable medical devices and industrial digital monitoring systems.

The MAX6424UK44+T is designed to provide power-up reset, power-down reset and brownout reset. Its reset output is open-drain, making it very convenient to integrate into a system. Its reset input has hysteresis, ensuring that proper threshold detection of reset source voltage is achieved.

The power-on reset (POR) function of the MAX6424UK44+T is designed to provide a low-voltage reset pulse when the system is powered-up. This enables the device to immediately identify whether the power supply voltage is at the proper level. This runs subsequent reset signals, if necessary, to the system\'s microprocessor or microcontroller as well as other integrated circuits.

The MAX6424UK44+T offers a range of features and benefits, providing a comprehensive power-up initialization solution for low-voltage and low-power systems. In addition to the aforementioned features, it has an operating current of 5 μA over temperature and low-battery detection from 1.5V to 4.9V, and provides over-voltage protection, under-voltage protection, thermal protection and reset sequencing.

As part of its reset sequencing, the device can pull down its reset output to a low voltage within 10 ms of power-up inside the supply rails. This output can also be used to activate other circuits in the system, such as a system bootstrap processor, memory or other peripherals. It also has an active-low reset output that monitors the reset source voltage.

In addition, the device has the ability to protect itself with a programmable watchdog timer. The watchdog timer looks for input transitions at its reset pin, and sets a time period in which the transitions must occur. If the count is exceeded, the device will reset itself, thereby providing an added level of reliability in case of system malfunction.

Another great feature of the MAX6424UK44+T is its ability to prevent reverse voltage from being applied to the device by shorting the negative terminal of the supply to ground. This prevents accidental damage and possible system failure. This feature is especially useful for battery-operated systems.

Overall, the MAX6424UK44+T is an ideal solution for low-power and low-voltage systems, providing a comprehensive power-up initialization solution. With its small-size and array of features and benefits, it is an excellent choice for a wide range of applications.

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