MAX708RESA+

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The MAX708RESA+ is a precision reset circuit with a push-pull or open-drain output. It has an integrated voltage supervisor with a built-in voltage reference and reset timer. The specific type of reset pulse can be configured using the various power-saving strategies, including delayed pulses and configurable watchdog reset and temperature-compensated reset timings. This reset controller and voltage supervisor can be an ideal choice for applications with large battery-operated systems or those that need large capacitor banks.

Application Field

The MAX708RESA+ is a versatile and highly integrated circuit for battery-powered systems, embedded applications, and handheld devices. This reset controller and voltage supervisor can be used to detect power-failure events and to alert the system control software, reset the processor, and restore power following system resets. It is available with a variety of reset options and power saving features such as delayed pulse operation and temperature compensation. This device can also be used for power-on reset, low voltage reset, and low battery reset detection.

The device is particularly suitable for battery-powered systems since it integrates an adjustable threshold voltage supervisor which can be used to detect low battery conditions. It also integrates an adjustable reset timer, which ensures that a long time gap between power-on and processor reset is avoided.

Working Principle

The MAX708RESA+ is a reset controller and voltage supervisor with an adjustable voltage reference and reset timer. It has an input voltage range that extends from 2.4V to 5.5V and adjustable threshold voltages of 0.8V to 4.6V. It is an open-drain reset controller that provides both an activelow reset signal and a power-on reset signal. The integrated reset timer can be used to set the time after which the reset pulse is asserted. The time-out period of the reset is set using an external capacitor. Additionally, the device can also be placed in a power saving mode with a delay pulse functionality that eliminates the reset pulse if the device is powered off during the delay period.

The MAX708RESA+ can also include an integrated temperature sensor. The device has an adjustable temperature compensation feature that can be used to adjust the reset timer depending on the temperature. The adjustable timer solution allows for higher accuracy and reliability in batteryoperated systems even at extreme temperatures. The device also features a configurable watchdog reset timer that can detect errors in system operations and trigger a reset pulse to alert the processor.

In summary, the MAX708RESA+ is an ideal reset controller and voltage supervisor for battery-powered systems. It integrates a variety of features such as adjustable reset timer, power-on reset signal, delayed pulse operation and temperature compensation. This makes it an attractive solution for reliable and high-efficiency applications that require precise and reliable power supply monitoring.

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