MAX791EPE+

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As recently released by Maxim Integrated, the MAX791EPE+ is a high-accuracy voltage supervisor IC that provides a guaranteed reset delay and precision voltage monitoring. Widely used for general-purpose reset and low-voltage alarm functions, Maxim Integrated’s MAX791EPE+ PMIC supervisors operate from a 2.5V to 5.5V supply voltage range, and integrate an internal voltage reference and timer circuit. Designed for low power applications, the MAX791EPE+ offers a guaranteed reset delay from 0.2 seconds to 2 seconds.

The MAX791EPE+ PMIC supervisor operates in two modes: Supervisory Mode and Normal Mode. In Supervisory Mode, the MAX791EPE+ continuously monitors the VDD voltage and activates the RESET# signal when the VDD voltage reaches a user-defined voltage threshold. In Normal Mode, theMAX791EPE+ monitors the VDD voltage but doesn’t generate a reset signal.

The MAX791EPE+ is designed to accurately monitor the supply voltage with a voltage threshold of 0.1V to 2V. The hysteresis voltage and reset delay are both adjustable. The reset delay can be adjusted to 0.2 seconds, 0.5 seconds, 1 second, and 2 seconds. The voltage hysteresis is adjustable from 0.1V to 1.5V. The MAX791EPE+ has a start-up time of 1 ms.

The MAX791EPE+ has an open-drain reset output that maintains a low voltage for the duration of the system reset. The output is suitable for driving a CMOS or TTL level load, and can be used to reset complex logic and processors. The reset output is also suitable for driving LEDs and relays. The MAX791EPE+ is packaged in an 8-pin SOT-23 package and operates over a wide temperature range of -40°C to +125°C.

The MAX791EPE+ is ideal for use in safety-critical circuits, such as cell phones and personal digital assistants (PDAs). It can be used to create reliable power-on reset circuits in memory systems and to reset microprocessors during power-up, power-down, and brownout conditions. The MAX791EPE+ is also used in battery-backed systems to provide a guaranteed reset delay before the system is powered down.

In conclusion, the MAX791EPE+ PMIC supervisor is a reliable and accurate voltage supervisor IC that provides a guaranteed reset delay and precision voltage monitoring. Its ultra-low power consumption and wide voltage range make it ideal for use in battery-backed systems. The MAX791EPE+ is a versatile IC that can be used to create reliable power-on reset circuits, reset microprocessors during power-up, power-down, and brownout conditions, and provide a guaranteed reset delay before system power down.

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