MAX6388XS25D7-T

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The MAX6388XS25D7-T is a member of the MAX6388X family of system power microprocessors for portable applications up to 5V. It is a precision, low-power, four-channel supervisor with its advanced integrated features. The MAX6388XS25D7-T provides voltage monitoring and system reset functions for high-reliability, ultra-low power portable or battery powered applications. It provides integrated support for up to four user-selectable channels of system voltage monitoring and up to three user-selectable resetting thresholds, as shown in its associated datasheet.

The MAX6388XS25D7-T is ideal for portable applications such as PDAs, cellular phones, laptop computers, and other battery-powered systems. It operates over a wide temperature range (–40°C to +85°C) and maintains high accuracy over its entire operating temperature range. It has fast startup, low quiescent current, and highly integrated features that minimize board space requirements. The chip includes an inrush-current-limiting and undervoltage-reset feature to protect against current-spike problems and to ensure low power consumption. The reset time for the MAX6388XS25D7-T is typically 240µs.

The MAX6388XS25D7-T provides real-time voltage monitoring of up to four user-selectable system voltages, such as VCC, VBAT, PS_5V, and PS_3V, in PDA systems. It can generate an active-low reset to the system microprocessor when the monitored voltages drop below the user-selectable undervoltage thresholds. The MAX6388XS25D7-T also provides the flexibility to select separate thresholds for each monitored voltage, allowing users to monitor all system components. It also provides a hysteresis feature that prevents unwanted reset output pulses.

The MAX6388XS25D7-T also includes an internal watchdog timer that can be used to provide system power-on reset functions. The timer can be programmed with a user-selectable timeout period of up to 1024ms to allow the system processor to boot up. In the event that the processor hangs while running, the MAX6388XS25D7-T will generate a chip reset and reset the system microprocessor after the timeout period expires. This feature helps to prevent system lockups and enhance system reliability.

The MAX6388XS25D7-T provides a wide range of features and flexibility to ensure that high-reliability, battery-powered systems operate properly. Its low power consumption, wide operating temperature range, robust reset functions, and integrated watchdog timer make the MAX6388XS25D7-T the ideal system supervisory for portable applications.

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