MAX6388XS31D3+T

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Today, we will discuss the application field and working principle of the MAX6388XS31D3+T from Maxim Integrated\'s popular PMIC – Supervisors family. This family includes the MAX6388 series supervisor devices, which are ideal for protecting microprocessor cores, when used as watchdog timers and reset generation. The MAX6388XS31D3+T is a very low power system reset supervisor IC designed specifically for use in low power/long battery life applications. It provides power-on reset (POR) generation, windowed watchdog timer (WWDT) reset generation, and manual reset reset (MR) generation in a 4-pin, SC-70 package.

The MAX6388XS31D3+T is commonly used in portable applications such as medical, industrial, and consumer electronics. Its innovative architecture allows very low quiescent current from 0.015μA (Nav X1) up to 0.30μA (Nav) when consuming less than 1μA or less of full load current. The wide 2.4V to 5.5V operating range is compatible with a variety of single cell battery supplies.

The MAX6388XS31D3+T features two outputs, a reset output and a watchdog timer output. The reset output provides an active-low reset signal, while the watchdog timer signal is delayed one reset period. This delay is used to allow the system to process the reset signal before the rest of the system activates. The reset signal is used to reset the processor core, while the watchdog timer output is used to reset other parts of the system.

The MAX6388XS31D3+T also features an internal voltage monitor, which can be used to detect low voltage conditions. The voltage monitor is adjustable and can be used to detect any supply voltage below 9V. When the voltage drops below the set threshold, the MAX6388XS31D3+T will generate a reset signal.

The MAX6388XS31D3+T also features an integrated manual reset input, which provides the ability to detect manual reset conditions. This input can be tied to an external switch, which can be used to initiate a reset of the system. The manual reset signal must be held low for the duration of the hold time in order to trip the reset signal.

The MAX6388XS31D3+T also features a very wide range of watchdogs, which can be used in different operating conditions. The watchdog timer output is adjustable between 1s and 8s and can be programmed based on the system requirements. The reset timeout period is also adjustable and can be set between 2ms and 32ms.

Overall, the MAX6388XS31D3+T provides an extremely powerful reset supervisor solution for low power/long battery life applications. Its integrated reset, manual reset, and wide range of watchdog timer capabilities make this IC an ideal choice for any power sensitive design. Additionally, its low quiescent current consumption makes it a perfect choice for applications that require maximum efficiency.

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